<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created by Certent Disclosure Management 6.26.0.5 -->
<!--Based on XBRL 2.1-->
<!--Created on: 2/26/2019 12:20:17 PM-->
<!--Modified on: 2/26/2019 12:20:17 PM-->
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" targetNamespace="http://www.aquaamerica.com/20181231" elementFormDefault="qualified" attributeFormDefault="unqualified" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:invest="http://xbrl.sec.gov/invest/2013-01-31" xmlns:wtr="http://www.aquaamerica.com/20181231" xmlns:us-types="http://fasb.org/us-types/2018-01-31">
  <annotation>
    <appinfo>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedBalanceSheets" id="StatementConsolidatedBalanceSheets">
        <link:definition>00100 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfNetIncome" id="StatementConsolidatedStatementsOfNetIncome">
        <link:definition>00200 - Statement - Consolidated Statements Of Net Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfComprehensiveIncome" id="StatementConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>00300 - Statement - Consolidated Statements Of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfCapitalization" id="StatementConsolidatedStatementsOfCapitalization">
        <link:definition>00400 - Statement - Consolidated Statements Of Capitalization</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfCapitalizationAlternativeCalculation" id="StatementConsolidatedStatementsOfCapitalizationAlternativeCalculation">
        <link:definition>00410 - Statement - Consolidated Statements of Capitalization (Alternative Calculation)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfCashFlows" id="StatementConsolidatedStatementsOfCashFlows">
        <link:definition>00600 - Statement - Consolidated Statements Of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePropertyPlantAndEquipmentDetails" id="DisclosurePropertyPlantAndEquipmentDetails">
        <link:definition>40401 - Disclosure - Property, Plant And Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureAccountsReceivableNetAccountsReceivableDetails" id="DisclosureAccountsReceivableNetAccountsReceivableDetails">
        <link:definition>40502 - Disclosure - Accounts Receivable (Net Accounts Receivable) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureIncomeTaxesScheduleOfProvisionForIncomeTaxesDetails" id="DisclosureIncomeTaxesScheduleOfProvisionForIncomeTaxesDetails">
        <link:definition>40702 - Disclosure - Income Taxes (Schedule Of Provision For Income Taxes) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureIncomeTaxesScheduleOfReasonsForDifferencesBetweenStatutoryFederalIncomeTaxRateToIncomeBeforeIncomeTaxExpenseDetails" id="DisclosureIncomeTaxesScheduleOfReasonsForDifferencesBetweenStatutoryFederalIncomeTaxRateToIncomeBeforeIncomeTaxExpenseDetails">
        <link:definition>40703 - Disclosure - Income Taxes (Schedule Of Reasons For Differences Between Statutory Federal Income Tax Rate To Income Before Income Tax Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails" id="DisclosureIncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails">
        <link:definition>40705 - Disclosure - Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureFairValueOfFinancialInstrumentsSummaryOfUnrealizedGainsAndLossesOnEquitySecuritiesDetails" id="DisclosureFairValueOfFinancialInstrumentsSummaryOfUnrealizedGainsAndLossesOnEquitySecuritiesDetails">
        <link:definition>41102 - Disclosure - Fair Value Of Financial Instruments (Summary Of Unrealized Gains And Losses On Equity Securities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureNetIncomePerCommonShareAndEquityPerCommonShareScheduleOfEarningsPerShareDetails" id="DisclosureNetIncomePerCommonShareAndEquityPerCommonShareScheduleOfEarningsPerShareDetails">
        <link:definition>41302 - Disclosure - Net Income Per Common Share and Equity per Common Share (Schedule Of Earnings Per Share) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfChangesInBenefitObligationAndFairValueOfPlanAssetsDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfChangesInBenefitObligationAndFairValueOfPlanAssetsDetails">
        <link:definition>41503 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Changes In Benefit Obligation And Fair Value Of Plan Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfNetLiabilityRecognizedOnConsolidatedBalanceSheetsDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfNetLiabilityRecognizedOnConsolidatedBalanceSheetsDetails">
        <link:definition>41504 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Net Liability Recognized On Consolidated Balance Sheets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsComponentsOfNetPeriodicBenefitCostsDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsComponentsOfNetPeriodicBenefitCostsDetails">
        <link:definition>41506 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Components Of Net Periodic Benefit Costs) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfNetPeriodicBenefitCostNotYetRecognizedDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfNetPeriodicBenefitCostNotYetRecognizedDetails">
        <link:definition>41507 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Net Periodic Benefit Cost Not Yet Recognized) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/ScheduleSchedule1CondensedParentCompanyFinancialStatementsCondensedBalanceSheetsDetails" id="ScheduleSchedule1CondensedParentCompanyFinancialStatementsCondensedBalanceSheetsDetails">
        <link:definition>42002 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Condensed Balance Sheets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DocumentDocumentAndEntityInformation" id="DocumentDocumentAndEntityInformation">
        <link:definition>00090 - Document - Document And Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedBalanceSheetsParenthetical" id="StatementConsolidatedBalanceSheetsParenthetical">
        <link:definition>00105 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfComprehensiveIncomeParenthetical" id="StatementConsolidatedStatementsOfComprehensiveIncomeParenthetical">
        <link:definition>00305 - Statement - Consolidated Statements Of Comprehensive Income (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfCapitalizationParenthetical" id="StatementConsolidatedStatementsOfCapitalizationParenthetical">
        <link:definition>00405 - Statement - Consolidated Statements Of Capitalization (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfEquity" id="StatementConsolidatedStatementsOfEquity">
        <link:definition>00500 - Statement - Consolidated Statements Of Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfEquityParenthetical" id="StatementConsolidatedStatementsOfEquityParenthetical">
        <link:definition>00505 - Statement - Consolidated Statements Of Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/StatementConsolidatedStatementsOfCashFlowsParenthetical" id="StatementConsolidatedStatementsOfCashFlowsParenthetical">
        <link:definition>00605 - Statement - Consolidated Statements Of Cash Flows (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSummaryOfSignificantAccountingPolicies" id="DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>10101 - Disclosure - Summary Of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureAcquisitions" id="DisclosureAcquisitions">
        <link:definition>10201 - Disclosure - Acquisitions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureDispositions" id="DisclosureDispositions">
        <link:definition>10301 - Disclosure - Dispositions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePropertyPlantAndEquipment" id="DisclosurePropertyPlantAndEquipment">
        <link:definition>10401 - Disclosure - Property, Plant And Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureAccountsReceivable" id="DisclosureAccountsReceivable">
        <link:definition>10501 - Disclosure - Accounts Receivable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureRegulatoryAssetsAndLiabilities" id="DisclosureRegulatoryAssetsAndLiabilities">
        <link:definition>10601 - Disclosure - Regulatory Assets And Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureIncomeTaxes" id="DisclosureIncomeTaxes">
        <link:definition>10701 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureTaxesOtherThanIncomeTaxes" id="DisclosureTaxesOtherThanIncomeTaxes">
        <link:definition>10801 - Disclosure - Taxes Other Than Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureCommitmentsAndContingencies" id="DisclosureCommitmentsAndContingencies">
        <link:definition>10901 - Disclosure - Commitments And Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureLongTermDebtAndLoansPayable" id="DisclosureLongTermDebtAndLoansPayable">
        <link:definition>11001 - Disclosure - Long-Term Debt And Loans Payable</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureFairValueOfFinancialInstruments" id="DisclosureFairValueOfFinancialInstruments">
        <link:definition>11101 - Disclosure - Fair Value Of Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureStockholdersEquity" id="DisclosureStockholdersEquity">
        <link:definition>11201 - Disclosure - Stockholders&#x2019; Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureNetIncomePerCommonShareAndEquityPerCommonShare" id="DisclosureNetIncomePerCommonShareAndEquityPerCommonShare">
        <link:definition>11301 - Disclosure - Net Income per Common Share and Equity per Common Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlan" id="DisclosureEmployeeStockAndIncentivePlan">
        <link:definition>11401 - Disclosure - Employee Stock and Incentive Plan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefits" id="DisclosurePensionPlansAndOtherPostRetirementBenefits">
        <link:definition>11501 - Disclosure - Pension Plans And Other Post-Retirement Benefits</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureWaterAndWastewaterRates" id="DisclosureWaterAndWastewaterRates">
        <link:definition>11601 - Disclosure - Water And Wastewater Rates</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSegmentInformation" id="DisclosureSegmentInformation">
        <link:definition>11701 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSelectedQuarterlyFinancialData" id="DisclosureSelectedQuarterlyFinancialData">
        <link:definition>11801 - Disclosure - Selected Quarterly Financial Data</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/ScheduleSchedule1CondensedParentCompanyFinancialStatements" id="ScheduleSchedule1CondensedParentCompanyFinancialStatements">
        <link:definition>12001 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicy" id="DisclosureSummaryOfSignificantAccountingPoliciesPolicy">
        <link:definition>20102 - Disclosure - Summary Of Significant Accounting Policies (Policy)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables" id="DisclosureSummaryOfSignificantAccountingPoliciesTables">
        <link:definition>30103 - Disclosure - Summary Of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePropertyPlantAndEquipmentTables" id="DisclosurePropertyPlantAndEquipmentTables">
        <link:definition>30403 - Disclosure - Property, Plant And Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureAccountsReceivableTables" id="DisclosureAccountsReceivableTables">
        <link:definition>30503 - Disclosure - Accounts Receivable (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureRegulatoryAssetsAndLiabilitiesTables" id="DisclosureRegulatoryAssetsAndLiabilitiesTables">
        <link:definition>30603 - Disclosure - Regulatory Assets And Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureIncomeTaxesTables" id="DisclosureIncomeTaxesTables">
        <link:definition>30703 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureTaxesOtherThanIncomeTaxesTables" id="DisclosureTaxesOtherThanIncomeTaxesTables">
        <link:definition>30803 - Disclosure - Taxes Other Than Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureCommitmentsAndContingenciesTables" id="DisclosureCommitmentsAndContingenciesTables">
        <link:definition>30903 - Disclosure - Commitments And Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureLongTermDebtAndLoansPayableTables" id="DisclosureLongTermDebtAndLoansPayableTables">
        <link:definition>31003 - Disclosure - Long-Term Debt And Loans Payable (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureFairValueOfFinancialInstrumentsTables" id="DisclosureFairValueOfFinancialInstrumentsTables">
        <link:definition>31103 - Disclosure - Fair Value Of Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureStockholdersEquityTables" id="DisclosureStockholdersEquityTables">
        <link:definition>31203 - Disclosure - Stockholders&#x2019; Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureNetIncomePerCommonShareAndEquityPerCommonShareTables" id="DisclosureNetIncomePerCommonShareAndEquityPerCommonShareTables">
        <link:definition>31303 - Disclosure - Net Income per Common Share and Equity per Common Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanTables" id="DisclosureEmployeeStockAndIncentivePlanTables">
        <link:definition>31403 - Disclosure - Employee Stock And Incentive Plan (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsTables" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsTables">
        <link:definition>31503 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSegmentInformationTables" id="DisclosureSegmentInformationTables">
        <link:definition>31703 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSelectedQuarterlyFinancialDataTables" id="DisclosureSelectedQuarterlyFinancialDataTables">
        <link:definition>31803 - Disclosure - Selected Quarterly Financial Data (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesNarrativeDetails">
        <link:definition>40101 - Disclosure - Summary Of Significant Accounting Policies (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfDisaggregationOfRevenueDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesScheduleOfDisaggregationOfRevenueDetails">
        <link:definition>40102 - Disclosure - Summary Of Significant Accounting Policies (Schedule Of Disaggregation Of Revenue) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfChangesInGoodwillDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesSummaryOfChangesInGoodwillDetails">
        <link:definition>40103 - Disclosure - Summary Of Significant Accounting Policies (Summary Of Changes In Goodwill) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureAcquisitionsDetails" id="DisclosureAcquisitionsDetails">
        <link:definition>40201 - Disclosure - Acquisitions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureDispositionsDetails" id="DisclosureDispositionsDetails">
        <link:definition>40301 - Disclosure - Dispositions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureAccountsReceivableNarrativeDetails" id="DisclosureAccountsReceivableNarrativeDetails">
        <link:definition>40501 - Disclosure - Accounts Receivable (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureAccountsReceivableAllowanceForDoubtfulAccountsDetails" id="DisclosureAccountsReceivableAllowanceForDoubtfulAccountsDetails">
        <link:definition>40503 - Disclosure - Accounts Receivable (Allowance For Doubtful Accounts) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureRegulatoryAssetsAndLiabilitiesNarrativeDetails" id="DisclosureRegulatoryAssetsAndLiabilitiesNarrativeDetails">
        <link:definition>40601 - Disclosure - Regulatory Assets And Liabilities (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureRegulatoryAssetsAndLiabilitiesComponentsOfRegulatoryAssetsAndRegulatoryLiabilitiesDetails" id="DisclosureRegulatoryAssetsAndLiabilitiesComponentsOfRegulatoryAssetsAndRegulatoryLiabilitiesDetails">
        <link:definition>40602 - Disclosure - Regulatory Assets And Liabilities (Components Of Regulatory Assets And Regulatory Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureIncomeTaxesNarrativeDetails" id="DisclosureIncomeTaxesNarrativeDetails">
        <link:definition>40701 - Disclosure - Income Taxes (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsTableDetails" id="DisclosureIncomeTaxesUnrecognizedTaxBenefitsTableDetails">
        <link:definition>40704 - Disclosure - Income Taxes (Unrecognized Tax Benefits Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureTaxesOtherThanIncomeTaxesDetails" id="DisclosureTaxesOtherThanIncomeTaxesDetails">
        <link:definition>40801 - Disclosure - Taxes Other Than Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails" id="DisclosureCommitmentsAndContingenciesNarrativeDetails">
        <link:definition>40901 - Disclosure - Commitments And Contingencies (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureCommitmentsAndContingenciesScheduleOfFutureAnnualMinimumLeasePaymentsDetails" id="DisclosureCommitmentsAndContingenciesScheduleOfFutureAnnualMinimumLeasePaymentsDetails">
        <link:definition>40902 - Disclosure - Commitments And Contingencies (Schedule Of Future Annual Minimum Lease Payments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureCommitmentsAndContingenciesScheduleOfPurchaseObligationsDetails" id="DisclosureCommitmentsAndContingenciesScheduleOfPurchaseObligationsDetails">
        <link:definition>40903 - Disclosure - Commitments And Contingencies (Schedule Of Purchase Obligations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureCommitmentsAndContingenciesScheduleOfRentExpenseUnderOperatingLeasesDetails" id="DisclosureCommitmentsAndContingenciesScheduleOfRentExpenseUnderOperatingLeasesDetails">
        <link:definition>40904 - Disclosure - Commitments And Contingencies (Schedule Of Rent Expense Under Operating Leases) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureLongTermDebtAndLoansPayableNarrativeDetails" id="DisclosureLongTermDebtAndLoansPayableNarrativeDetails">
        <link:definition>41001 - Disclosure - Long-Term Debt And Loans Payable (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureLongTermDebtAndLoansPayableScheduleOfLongTermDebtFutureSinkingFundPaymentsAndDebtMaturitiesDetails" id="DisclosureLongTermDebtAndLoansPayableScheduleOfLongTermDebtFutureSinkingFundPaymentsAndDebtMaturitiesDetails">
        <link:definition>41002 - Disclosure - Long-Term Debt And Loans Payable (Schedule Of Long-Term Debt Future Sinking Fund Payments And Debt Maturities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureLongTermDebtAndLoansPayableScheduleOfLongTermDebtDetails" id="DisclosureLongTermDebtAndLoansPayableScheduleOfLongTermDebtDetails">
        <link:definition>41003 - Disclosure - Long-Term Debt And Loans Payable (Schedule of Long-Term Debt) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureLongTermDebtAndLoansPayableSummaryOfFairValueDetails" id="DisclosureLongTermDebtAndLoansPayableSummaryOfFairValueDetails">
        <link:definition>41004 - Disclosure - Long-Term Debt And Loans Payable (Summary Of Fair Value) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureLongTermDebtAndLoansPayableSummaryOfAmountsRecognizedInEarningsDetails" id="DisclosureLongTermDebtAndLoansPayableSummaryOfAmountsRecognizedInEarningsDetails">
        <link:definition>41005 - Disclosure - Long-Term Debt And Loans Payable (Summary Of Amounts Recognized In Earnings) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureFairValueOfFinancialInstrumentsNarrativeDetails" id="DisclosureFairValueOfFinancialInstrumentsNarrativeDetails">
        <link:definition>41101 - Disclosure - Fair Value Of Financial Instruments (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureFairValueOfFinancialInstrumentsScheduleOfCarryingAmountsAndEstimatedFairValuesOfLongTermDebtDetails" id="DisclosureFairValueOfFinancialInstrumentsScheduleOfCarryingAmountsAndEstimatedFairValuesOfLongTermDebtDetails">
        <link:definition>41103 - Disclosure - Fair Value Of Financial Instruments (Schedule Of Carrying Amounts And Estimated Fair Values Of Long-Term Debt) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureStockholdersEquityNarrativeDetails" id="DisclosureStockholdersEquityNarrativeDetails">
        <link:definition>41201 - Disclosure - Stockholders&#x2019; Equity (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureStockholdersEquitySharesOutstandingAndTreasurySharesHeldDetails" id="DisclosureStockholdersEquitySharesOutstandingAndTreasurySharesHeldDetails">
        <link:definition>41202 - Disclosure - Stockholders&#x2019; Equity (Shares Outstanding And Treasury Shares Held) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureNetIncomePerCommonShareAndEquityPerCommonShareNarrativeDetails" id="DisclosureNetIncomePerCommonShareAndEquityPerCommonShareNarrativeDetails">
        <link:definition>41301 - Disclosure - Net Income Per Common Share And Equity Per Common Share (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanNarrativeDetails" id="DisclosureEmployeeStockAndIncentivePlanNarrativeDetails">
        <link:definition>41401 - Disclosure - Employee Stock And Incentive Plan (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanScheduleOfPerformanceGoalsDetails" id="DisclosureEmployeeStockAndIncentivePlanScheduleOfPerformanceGoalsDetails">
        <link:definition>41402 - Disclosure - Employee Stock And Incentive Plan (Schedule Of Performance Goals) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfCompensationCostsDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfCompensationCostsDetails">
        <link:definition>41404 - Disclosure - Employee Stock And Incentive Plan (Summary Of Compensation Costs) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfValueOfStockAwardsDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfValueOfStockAwardsDetails">
        <link:definition>41405 - Disclosure - Employee Stock And Incentive Plan (Summary Of Value Of Stock Awards) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfNonvestedPsuTransactionsDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfNonvestedPsuTransactionsDetails">
        <link:definition>41406 - Disclosure - Employee Stock and Incentive Plan (Summary Of Nonvested PSU Transactions) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfNonvestedRsuTransactionsDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfNonvestedRsuTransactionsDetails">
        <link:definition>41407 - Disclosure - Employee Stock And Incentive Plan (Summary Of Nonvested RSU Transactions) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanAssumptionsUsedInPricingModelDetails" id="DisclosureEmployeeStockAndIncentivePlanAssumptionsUsedInPricingModelDetails">
        <link:definition>41408 - Disclosure - Employee Stock And Incentive Plan (Assumptions Used In The Pricing Model) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfValueOfRestrictedStockUnitsDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfValueOfRestrictedStockUnitsDetails">
        <link:definition>41409 - Disclosure - Employee Stock And Incentive Plan (Summary Of Value Of Restricted Stock Units) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfStockOptionTransactionsDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfStockOptionTransactionsDetails">
        <link:definition>41410 - Disclosure - Employee Stock And Incentive Plan (Summary Of Stock Option Transactions) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfOptionsOutstandingAndOptionsExercisableDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfOptionsOutstandingAndOptionsExercisableDetails">
        <link:definition>41411 - Disclosure - Employee Stock And Incentive Plan (Summary Of Options Outstanding And Options Exercisable) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfStockOptionsExercisedAndVestedDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfStockOptionsExercisedAndVestedDetails">
        <link:definition>41412 - Disclosure - Employee Stock And Incentive Plan (Summary Of Stock Options Exercised And Vested) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfValueOfRestrictedStockAwardsDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfValueOfRestrictedStockAwardsDetails">
        <link:definition>41413 - Disclosure - Employee Stock And Incentive Plan (Summary Of Value Of Restricted Stock Awards) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureEmployeeStockAndIncentivePlanSummaryOfNonvestedShareActivityDetails" id="DisclosureEmployeeStockAndIncentivePlanSummaryOfNonvestedShareActivityDetails">
        <link:definition>41414 - Disclosure - Employee Stock And Incentive Plan (Summary Of Nonvested Share Activity) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsNarrativeDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsNarrativeDetails">
        <link:definition>41501 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfBenefitPaymentsOfExpectedFutureServiceDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfBenefitPaymentsOfExpectedFutureServiceDetails">
        <link:definition>41502 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Benefit Payments Of Expected Future Service) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfAccumulatedAndProjectedBenefitObligationsDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfAccumulatedAndProjectedBenefitObligationsDetails">
        <link:definition>41505 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Accumulated And Projected Benefit Obligations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfNetPeriodicBenefitCostThatWillBeAmortizedDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfNetPeriodicBenefitCostThatWillBeAmortizedDetails">
        <link:definition>41508 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Net Periodic Benefit Cost That Will Be Amortized) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfAssumptionsRelatedToPensionAndOtherPostretirementBenefitPlansDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfAssumptionsRelatedToPensionAndOtherPostretirementBenefitPlansDetails">
        <link:definition>41509 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Assumptions Related To Pension And Other Postretirement Benefit Plans) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesDetails">
        <link:definition>41510 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Effect Of One-Percentage-Point Change In Assumed Health Care Cost Trend Rates) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfTargetAssetAllocationsDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfTargetAssetAllocationsDetails">
        <link:definition>41511 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Target Asset Allocations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfFairValueOfPlanAssetsDetails" id="DisclosurePensionPlansAndOtherPostRetirementBenefitsScheduleOfFairValueOfPlanAssetsDetails">
        <link:definition>41512 - Disclosure - Pension Plans And Other Post-Retirement Benefits (Schedule Of Fair Value Of Plan Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureWaterAndWastewaterRatesDetails" id="DisclosureWaterAndWastewaterRatesDetails">
        <link:definition>41601 - Disclosure - Water And Wastewater Rates (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSegmentInformationNarrativeDetails" id="DisclosureSegmentInformationNarrativeDetails">
        <link:definition>41701 - Disclosure - Segment Information (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSegmentInformationCompanySSegmentInformationContinuingOperationsDetails" id="DisclosureSegmentInformationCompanySSegmentInformationContinuingOperationsDetails">
        <link:definition>41702 - Disclosure - Segment Information (Company's Segment Information, Continuing Operations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/DisclosureSelectedQuarterlyFinancialDataDetails" id="DisclosureSelectedQuarterlyFinancialDataDetails">
        <link:definition>41801 - Disclosure - Selected Quarterly Financial Data (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/ScheduleSchedule1CondensedParentCompanyFinancialStatementsNarrativeDetails" id="ScheduleSchedule1CondensedParentCompanyFinancialStatementsNarrativeDetails">
        <link:definition>42001 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/ScheduleSchedule1CondensedParentCompanyFinancialStatementsCondensedStatementsOfComprehensiveIncomeDetails" id="ScheduleSchedule1CondensedParentCompanyFinancialStatementsCondensedStatementsOfComprehensiveIncomeDetails">
        <link:definition>42003 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Condensed Statements of Comprehensive Income) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/ScheduleSchedule1CondensedParentCompanyFinancialStatementsCondensedStatementsOfCashFlowsDetails" id="ScheduleSchedule1CondensedParentCompanyFinancialStatementsCondensedStatementsOfCashFlowsDetails">
        <link:definition>42004 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Condensed Statements of Cash Flows) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.aquaamerica.com/role/ScheduleSchedule1CondensedParentCompanyFinancialStatementsDebtMaturitiesOfLongTermDebtDetails" id="ScheduleSchedule1CondensedParentCompanyFinancialStatementsDebtMaturitiesOfLongTermDebtDetails">
        <link:definition>42005 - Schedule - Schedule 1 - Condensed Parent Company Financial Statements (Debt Maturities Of Long-Term Debt) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple" xlink:href="wtr-20181231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="wtr-20181231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Presentation Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="wtr-20181231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="wtr-20181231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Calculation Links, all" />
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <import namespace="http://fasb.org/us-roles/2018-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2018/elts/us-roles-2018-01-31.xsd" />
  <import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2018-01-31" schemaLocation="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd" />
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <import namespace="http://fasb.org/us-gaap/2018-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd" />
  <import namespace="http://xbrl.sec.gov/stpr/2018-01-31" schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" />
  <import namespace="http://fasb.org/srt/2018-01-31" schemaLocation="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd" />
  <element id="wtr_WaterAndWastewaterRatesAbstract" name="WaterAndWastewaterRatesAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_TaxesOtherThanIncomeTaxesAbstract" name="TaxesOtherThanIncomeTaxesAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_ConsolidatedStatementsOfCapitalizationAbstract" name="ConsolidatedStatementsOfCapitalizationAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_ProceedsFromSaleOfUtilitySystemAndOther" name="ProceedsFromSaleOfUtilitySystemAndOther" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_InterestExpenseNetOfAfudc" name="InterestExpenseNetOfAfudc" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_PropertyMember" name="PropertyMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_GrossReceiptsExciseAndFranchiseMember" name="GrossReceiptsExciseAndFranchiseMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_PayrollMember" name="PayrollMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OtherSegmentMember" name="OtherSegmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_TaxesOtherThanIncomeTaxesTable" name="TaxesOtherThanIncomeTaxesTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_DisposalGroupByLocationTable" name="DisposalGroupByLocationTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_ReclassificationOfGoodwillAcquisitionAdjustment" name="ReclassificationOfGoodwillAcquisitionAdjustment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_InfrastructureRehabilitationSurcharges" name="InfrastructureRehabilitationSurcharges" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_InfrastructureRehabilitationSurchargesCappedPercentage" name="InfrastructureRehabilitationSurchargesCappedPercentage" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_TaxesOtherThanIncomeTaxesLineItems" name="TaxesOtherThanIncomeTaxesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_WaterAndWastewaterRatesLineItems" name="WaterAndWastewaterRatesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_DiscontinuedOperationsAndOtherDispositionsLineItems" name="DiscontinuedOperationsAndOtherDispositionsLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_InfrastructureRehabilitationSurchargePercentageResetLevelUponNewBaseRates" name="InfrastructureRehabilitationSurchargePercentageResetLevelUponNewBaseRates" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NumberOfCustomers" name="NumberOfCustomers" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NotesRangingFromFourPointSixTwoPercentageToFourPointEightSevenPercentageMember" name="NotesRangingFromFourPointSixTwoPercentageToFourPointEightSevenPercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_PerformanceShareUnitsMember" name="PerformanceShareUnitsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_TwoThousandNineOmnibusEquityCompensationPlanMember" name="TwoThousandNineOmnibusEquityCompensationPlanMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_PercentageOfTargetAwardAmountParticipantMayEarn" name="PercentageOfTargetAwardAmountParticipantMayEarn" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationPeriodOfFairValueOfShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAmortizationPeriodOfFairValueOfShares" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceCriteriaAdjustment" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceCriteriaAdjustment" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceCriteriaAdjustmentWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceCriteriaAdjustmentWeightedAverageGrantDateFairValue" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodWeightedAverageGrantDateFairValue" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_DefinedBenefitPlanAmortizationOfActuarialLoss" name="DefinedBenefitPlanAmortizationOfActuarialLoss" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_BaseRateIncreaseDesignedToIncreaseTotalOperatingRevenuesOnAnnualBasis" name="BaseRateIncreaseDesignedToIncreaseTotalOperatingRevenuesOnAnnualBasis" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_OtherSubsidiariesMember" name="OtherSubsidiariesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_PerformancePeriodSpecifiedInGrant" name="PerformancePeriodSpecifiedInGrant" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_DebtInstrumentMaturityDateYear" name="DebtInstrumentMaturityDateYear" nillable="true" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NotQuantitativelySignificantMember" name="NotQuantitativelySignificantMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NotesRangingFromFivePointZeroOnePercentageToFivePointNineFivePercentageMember" name="NotesRangingFromFivePointZeroOnePercentageToFivePointNineFivePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_UtilitiesOperatingExpensesTaxesAsInAnnualReportTextBlock" name="UtilitiesOperatingExpensesTaxesAsInAnnualReportTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_UtilitiesOperatingExpensesTaxesAsInAnnualReportTableTextBlock" name="UtilitiesOperatingExpensesTaxesAsInAnnualReportTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_IncomeTaxAuthorityTable" name="IncomeTaxAuthorityTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_IncomeTaxesLineItems" name="IncomeTaxesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_AquaPennsylvaniaIncMember" name="AquaPennsylvaniaIncMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RegulationPolicyTextBlock" name="RegulationPolicyTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_BasisOfFinancialStatementPresentationPolicyTextBlock" name="BasisOfFinancialStatementPresentationPolicyTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RegulatoryAssetsDeferredChargesAndOtherAssetsPolicyTextBlock" name="RegulatoryAssetsDeferredChargesAndOtherAssetsPolicyTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_CustomersAdvancesForConstructionAndContributionsInAidOfConstructionPolicyTextBlock" name="CustomersAdvancesForConstructionAndContributionsInAidOfConstructionPolicyTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsGrantDateFairValuePerOption" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsGrantDateFairValuePerOption" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedPeriodTotalFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedPeriodTotalFairValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_RangeOfPricesThirteenToSixteenPointNineNineMember" name="RangeOfPricesThirteenToSixteenPointNineNineMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RangeOfPricesSeventeenToNineteenPointNineNineMember" name="RangeOfPricesSeventeenToNineteenPointNineNineMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalIntrinsicValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_ProjectedBenefitMember" name="ProjectedBenefitMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_AccumulatedBenefitMember" name="AccumulatedBenefitMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_DefinedBenefitPlanActuarialGainLossNotIncludedInPeriodicBenefitCost" name="DefinedBenefitPlanActuarialGainLossNotIncludedInPeriodicBenefitCost" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_DefinedBenefitPlanUltimateTrendRate" name="DefinedBenefitPlanUltimateTrendRate" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_EquitySecuritiesCommonStocksMember" name="EquitySecuritiesCommonStocksMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ScheduleOfAccountsReceivableTableTextBlock" name="ScheduleOfAccountsReceivableTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock" name="ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_MotorVehiclesBuildingsAndOtherEquipmentMember" name="MotorVehiclesBuildingsAndOtherEquipmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_CommitmentsAndContingenciesLineItems" name="CommitmentsAndContingenciesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtAndLoansPayableAbstract" name="LongTermDebtAndLoansPayableAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_PercentageOfOperatingRevenueFromLargestOperatingSubsidiary" name="PercentageOfOperatingRevenueFromLargestOperatingSubsidiary" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NumberOfCountiesProvidingOperatingServices" name="NumberOfCountiesProvidingOperatingServices" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NumberOfStatesProvidingServicesInOtherThanPennsylvania" name="NumberOfStatesProvidingServicesInOtherThanPennsylvania" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_PublicUtilitiesPropertyPlantAndEquipmentAmortizationOfAcquisitionAdjustments" name="PublicUtilitiesPropertyPlantAndEquipmentAmortizationOfAcquisitionAdjustments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_CapitalizedCostsIncludedInPropertyPlantAndEquipment" name="CapitalizedCostsIncludedInPropertyPlantAndEquipment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="wtr_MainsAndAccessoriesMember" name="MainsAndAccessoriesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ServicesHydrantsTreatmentPlantsAndReservoirsMember" name="ServicesHydrantsTreatmentPlantsAndReservoirsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OperationsStructuresAndWaterTanksMember" name="OperationsStructuresAndWaterTanksMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_MiscellaneousPumpingAndPurificationEquipmentMember" name="MiscellaneousPumpingAndPurificationEquipmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_MetersDataProcessingTransportationAndOperatingEquipmentMember" name="MetersDataProcessingTransportationAndOperatingEquipmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NetUtilityPlantAcquisitionAdjustmentMember" name="NetUtilityPlantAcquisitionAdjustmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NonUtilityPlantAndEquipmentMember" name="NonUtilityPlantAndEquipmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NonUtilityPlantAndEquipment" name="NonUtilityPlantAndEquipment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="wtr_RegulatoryAssetRecoveryPeriod" name="RegulatoryAssetRecoveryPeriod" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_WaterTankPaintingCostsAmortizedOverPeriod" name="WaterTankPaintingCostsAmortizedOverPeriod" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ScheduleOfRegulatoryAssetsAndLiabilitiesTable" name="ScheduleOfRegulatoryAssetsAndLiabilitiesTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_WaterTankPaintingMember" name="WaterTankPaintingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FairValueAdjustmentOfLongTermDebtAssumedInAcquisitionMember" name="FairValueAdjustmentOfLongTermDebtAssumedInAcquisitionMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RateCaseFilingExpensesAndOtherMember" name="RateCaseFilingExpensesAndOtherMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RegulatoryOfAssetsAndLiabilitiesLineItems" name="RegulatoryOfAssetsAndLiabilitiesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_UtilityCustomersByGeographicOperatingSegmentPercentage" name="UtilityCustomersByGeographicOperatingSegmentPercentage" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <element id="wtr_DeferredTaxAssetsCustomersAdvancesForConstruction" name="DeferredTaxAssetsCustomersAdvancesForConstruction" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="wtr_DeferredTaxAssetsCostsExpensedForBookNotDeductedForTaxPrincipallyAccruedExpenses" name="DeferredTaxAssetsCostsExpensedForBookNotDeductedForTaxPrincipallyAccruedExpenses" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="wtr_DeferredTaxAssetsUtilityPlantAcquisitionAdjustmentBasisDifferences" name="DeferredTaxAssetsUtilityPlantAcquisitionAdjustmentBasisDifferences" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="wtr_DeferredTaxLiabilitiesUtilityPlantPrincipallyDueToDepreciationAndDifferencesInBasisOfFixedAssetsDueToVariationInTaxAndBookAccounting" name="DeferredTaxLiabilitiesUtilityPlantPrincipallyDueToDepreciationAndDifferencesInBasisOfFixedAssetsDueToVariationInTaxAndBookAccounting" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_DeferredTaxLiabilitiesDeferredTaxesAssociatedWithGrossUpOfRevenuesNecessaryToRecoverInRatesEffectOfTemporaryDifferences" name="DeferredTaxLiabilitiesDeferredTaxesAssociatedWithGrossUpOfRevenuesNecessaryToRecoverInRatesEffectOfTemporaryDifferences" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_DeferredTaxLiabilitiesTaxEffectOfRegulatoryAssetForPostretirementBenefits" name="DeferredTaxLiabilitiesTaxEffectOfRegulatoryAssetForPostretirementBenefits" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_DeferredTaxLiabilitiesDeferredInvestmentTaxCredit" name="DeferredTaxLiabilitiesDeferredInvestmentTaxCredit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_PurchasedWaterUnderLongTermAgreements" name="PurchasedWaterUnderLongTermAgreements" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_WaterTreatmentExpenseUnderContractualAgreement" name="WaterTreatmentExpenseUnderContractualAgreement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_SwingLineCommitmentMember" name="SwingLineCommitmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_UnsecuredRevolvingCreditFacilityMaturityYearMember" name="UnsecuredRevolvingCreditFacilityMaturityYearMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShortTermLineOfCreditMember" name="ShortTermLineOfCreditMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMember" name="FirstMortgageBondsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearMember" name="FirstMortgageBondsMaturityYearMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearBMember" name="FirstMortgageBondsMaturityYearBMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearCMember" name="FirstMortgageBondsMaturityYearCMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_AquaPennsylvaniasMember" name="AquaPennsylvaniasMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RetainedEarningsIncludedInNonControllingInterest" name="RetainedEarningsIncludedInNonControllingInterest" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_DebtIntrumentMaturityYear" name="DebtIntrumentMaturityYear" nillable="true" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_SublimitForDailyDemandLoans" name="SublimitForDailyDemandLoans" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_LongTermDebtInterestRateRangeZeroPointZeroZeroPercentageToZeroPointNineNinePercentageMember" name="LongTermDebtInterestRateRangeZeroPointZeroZeroPercentageToZeroPointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeOnePointZeroZeroPercentageToOnePointNineNinePercentageMember" name="LongTermDebtInterestRateRangeOnePointZeroZeroPercentageToOnePointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeTwoPointZeroZeroPercentageToTwoPointNineNinePercentageMember" name="LongTermDebtInterestRateRangeTwoPointZeroZeroPercentageToTwoPointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeThreePointZeroZeroPercentageToThreePointNineNinePercentageMember" name="LongTermDebtInterestRateRangeThreePointZeroZeroPercentageToThreePointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeFourPointZeroZeroPercentageToFourPointNineNinePercentageMember" name="LongTermDebtInterestRateRangeFourPointZeroZeroPercentageToFourPointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeFivePointZeroZeroPercentageToFivePointNineNinePercentageMember" name="LongTermDebtInterestRateRangeFivePointZeroZeroPercentageToFivePointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeSixPointZeroZeroPercentageToSixPointNineNinePercentageMember" name="LongTermDebtInterestRateRangeSixPointZeroZeroPercentageToSixPointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeSevenPointZeroZeroPercentageToSevenPointNineNinePercentageMember" name="LongTermDebtInterestRateRangeSevenPointZeroZeroPercentageToSevenPointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeEightPointZeroZeroPercentageToEightPointNineNinePercentageMember" name="LongTermDebtInterestRateRangeEightPointZeroZeroPercentageToEightPointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtInterestRateRangeNinePointZeroZeroPercentageToNinePointNineNinePercentageMember" name="LongTermDebtInterestRateRangeNinePointZeroZeroPercentageToNinePointNineNinePercentageMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ScheduleOfTargetAssetAllocationsTableTextBlock" name="ScheduleOfTargetAssetAllocationsTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NumberOfWastewaterSystems" name="NumberOfWastewaterSystems" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_IncomeTaxBenefitQualifyingCapitalExpenditures" name="IncomeTaxBenefitQualifyingCapitalExpenditures" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_ExpectedTaxRefund" name="ExpectedTaxRefund" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_CommitmentsAndContingenciesTable" name="CommitmentsAndContingenciesTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_LeaseExpirationYear" name="LeaseExpirationYear" nillable="true" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OperatingLeaseAdjustmentPeriod" name="OperatingLeaseAdjustmentPeriod" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_AnnualLeasePaymentsForLandDueOnAggregateRemainingYears" name="AnnualLeasePaymentsForLandDueOnAggregateRemainingYears" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_EstimatedAnnualCommitmentsToPurchaseWaterThroughNextFiveYears" name="EstimatedAnnualCommitmentsToPurchaseWaterThroughNextFiveYears" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="wtr_LongTermPurchaseAggregateCommitmentRemainingYears" name="LongTermPurchaseAggregateCommitmentRemainingYears" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_PurchaseObligationTerm" name="PurchaseObligationTerm" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_EquityPerCommonShare" name="EquityPerCommonShare" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NumberOfRateDecisions" name="NumberOfRateDecisions" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RevenuesRealized" name="RevenuesRealized" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_LongTermDebtOfSubsidiariesElevenMember" name="LongTermDebtOfSubsidiariesElevenMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesOneMember" name="LongTermDebtOfSubsidiariesOneMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesTwoMember" name="LongTermDebtOfSubsidiariesTwoMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesThreeMember" name="LongTermDebtOfSubsidiariesThreeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesFourMember" name="LongTermDebtOfSubsidiariesFourMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesFiveMember" name="LongTermDebtOfSubsidiariesFiveMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesSixMember" name="LongTermDebtOfSubsidiariesSixMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesSevenMember" name="LongTermDebtOfSubsidiariesSevenMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesEightMember" name="LongTermDebtOfSubsidiariesEightMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesNineMember" name="LongTermDebtOfSubsidiariesNineMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongTermDebtOfSubsidiariesTenMember" name="LongTermDebtOfSubsidiariesTenMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_PercentageOfCustomersServed" name="PercentageOfCustomersServed" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OtherTaxesMember" name="OtherTaxesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_AdditionalOtherTaxExpenseBenefitRecorded" name="AdditionalOtherTaxExpenseBenefitRecorded" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_AmortizationOfIncomeTaxCatchUpBonus" name="AmortizationOfIncomeTaxCatchUpBonus" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_DeferredIncomeTaxBenefitCatchUpBonus" name="DeferredIncomeTaxBenefitCatchUpBonus" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_FirstMortgageBondsMaturityYearDMember" name="FirstMortgageBondsMaturityYearDMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearEMember" name="FirstMortgageBondsMaturityYearEMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearFMember" name="FirstMortgageBondsMaturityYearFMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearGMember" name="FirstMortgageBondsMaturityYearGMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearHMember" name="FirstMortgageBondsMaturityYearHMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearIMember" name="FirstMortgageBondsMaturityYearIMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FourZeroOneKSavingsPlansMember" name="FourZeroOneKSavingsPlansMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_AaGradedCorporateBondsOutstandingValue" name="AaGradedCorporateBondsOutstandingValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_DefinedBenefitPlanFairValuePercentageOfPlanAssets" name="DefinedBenefitPlanFairValuePercentageOfPlanAssets" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <element id="wtr_AmortizationOfDeferredRepairTaxAdjustment" name="AmortizationOfDeferredRepairTaxAdjustment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_AquaAmericaCommonStockMember" name="AquaAmericaCommonStockMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTotalIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTotalIntrinsicValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_NonEquityComponentOfAllowanceForFundsUsedDuringConstruction" name="NonEquityComponentOfAllowanceForFundsUsedDuringConstruction" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="wtr_DividendReinvestmentMember" name="DividendReinvestmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ScheduleOfShareBasedCompensationValueOfRestrictedStockUnitsTableTextBlock" name="ScheduleOfShareBasedCompensationValueOfRestrictedStockUnitsTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_InternationalEquitiesMember" name="InternationalEquitiesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OperatingLossCarryforwardsBeforeUnrecognizedTaxPosition" name="OperatingLossCarryforwardsBeforeUnrecognizedTaxPosition" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_IncreaseDecreaseInInvestmentOfSubsidiary" name="IncreaseDecreaseInInvestmentOfSubsidiary" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_PercentageOfNetIncomeFromLargestOperatingSubsidiary" name="PercentageOfNetIncomeFromLargestOperatingSubsidiary" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_AmortizataionPeriodOfRateCaseFilingExpense" name="AmortizataionPeriodOfRateCaseFilingExpense" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearJMember" name="FirstMortgageBondsMaturityYearJMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesAvailableForIssuanceMayBeIssuedAsRestrictedStock" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesAvailableForIssuanceMayBeIssuedAsRestrictedStock" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodNotPaid" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodNotPaid" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodPaid" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodPaid" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodNotPaidWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodNotPaidWeightedAverageGrantDateFairValue" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodPaidWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodPaidWeightedAverageGrantDateFairValue" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RangeOfPricesMember" name="RangeOfPricesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RangeOfPricesBMember" name="RangeOfPricesBMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ContingentLiabilityForSelfInsuredEmployeeMedicalBenefitProgram" name="ContingentLiabilityForSelfInsuredEmployeeMedicalBenefitProgram" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_SharesPurchasedByTransferAgentForDividendReinvestmentPlan" name="SharesPurchasedByTransferAgentForDividendReinvestmentPlan" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ValueOfSharesPurchasedInOpenMarketForDividendInvestmentPlan" name="ValueOfSharesPurchasedInOpenMarketForDividendInvestmentPlan" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_OtherStateMember" name="OtherStateMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_RegulatoryAssetsAndLiabilitiesTable" name="RegulatoryAssetsAndLiabilitiesTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_RegulatoryAssetsAndLiabilitiesLineItems" name="RegulatoryAssetsAndLiabilitiesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="wtr_DebtInstrumentCarryingAmountNoncurrent" name="DebtInstrumentCarryingAmountNoncurrent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_ProceedsFromAdvancesForConstructionFinancingActivities" name="ProceedsFromAdvancesForConstructionFinancingActivities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_RepaymentsOfAdvancesForConstructionFinancingActivities" name="RepaymentsOfAdvancesForConstructionFinancingActivities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_JointVentureMember" name="JointVentureMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_TwoThousandSixteenAcquisitionMember" name="TwoThousandSixteenAcquisitionMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_SuperiorWaterCompanyInc.Member" name="SuperiorWaterCompanyInc.Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_SeniorUnsecuredNotesMaturityYearDMember" name="SeniorUnsecuredNotesMaturityYearDMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LongDebtMember" name="LongDebtMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FixedRateLongTermDebtMember" name="FixedRateLongTermDebtMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_UnsecuredRevolvingCreditFacilityMaturityYearBMember" name="UnsecuredRevolvingCreditFacilityMaturityYearBMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_UnsecuredRevolvingCreditFacilityWithFourBanksMember" name="UnsecuredRevolvingCreditFacilityWithFourBanksMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_BusinessCombinationSharesAvailableForIssuance" name="BusinessCombinationSharesAvailableForIssuance" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_StockAwardsMember" name="StockAwardsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation" name="TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsIntrinsicValueOfVestedShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsIntrinsicValueOfVestedShares" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsFairValueOfVestedShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsFairValueOfVestedShares" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_AggregateCommonAndPreferredSharesAuthorizedValue" name="AggregateCommonAndPreferredSharesAuthorizedValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_AmortizationOfDeferredRepairTaxAdjustmentImpactOnNetIncomeLoss" name="AmortizationOfDeferredRepairTaxAdjustmentImpactOnNetIncomeLoss" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_DeferredIncomeTaxBenefitCatchUpBonusImpactOnNetIncomeLoss" name="DeferredIncomeTaxBenefitCatchUpBonusImpactOnNetIncomeLoss" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_BankNotesBMember" name="BankNotesBMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_UnsecuredNotesBMember" name="UnsecuredNotesBMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_DefinedBenefitPlanBenefitsPaidPlanAssets" name="DefinedBenefitPlanBenefitsPaidPlanAssets" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_RegulatoryAssessmentsMember" name="RegulatoryAssessmentsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_PumpingFeesMember" name="PumpingFeesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NotesPayableUnderRevolvingCreditMember" name="NotesPayableUnderRevolvingCreditMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearKMember" name="FirstMortgageBondsMaturityYearKMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_DefinedBenefitPlanSpecialTerminationBenefit" name="DefinedBenefitPlanSpecialTerminationBenefit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="wtr_TwoThousandSeventeenAcquisitionMember" name="TwoThousandSeventeenAcquisitionMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_WaterAndWastewaterUtilitySystemsMember" name="WaterAndWastewaterUtilitySystemsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_BusinessAcquisitionGeographicalLocationNumberOfStates" name="BusinessAcquisitionGeographicalLocationNumberOfStates" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_DisposalGroupNumberOfBusinessUnits" name="DisposalGroupNumberOfBusinessUnits" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_BusinessAcquisitionGeographicalLocationNumberOfMunicipalities" name="BusinessAcquisitionGeographicalLocationNumberOfMunicipalities" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_UnrecognizedTaxBenefitsChangeInEnactedTaxRate" name="UnrecognizedTaxBenefitsChangeInEnactedTaxRate" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="wtr_AquaIllinoisMember" name="AquaIllinoisMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearMMember" name="FirstMortgageBondsMaturityYearMMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearNMember" name="FirstMortgageBondsMaturityYearNMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearOMember" name="FirstMortgageBondsMaturityYearOMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearPMember" name="FirstMortgageBondsMaturityYearPMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearQMember" name="FirstMortgageBondsMaturityYearQMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearRMember" name="FirstMortgageBondsMaturityYearRMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ScheduleOfShareBasedCompensationPerformanceGoalsMetricsTableTextBlock" name="ScheduleOfShareBasedCompensationPerformanceGoalsMetricsTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationPerformanceGoalsMetrics1" name="ShareBasedCompensationPerformanceGoalsMetrics1" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationPerformanceGoalsMetrics2" name="ShareBasedCompensationPerformanceGoalsMetrics2" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationPerformanceGoalsMetrics3" name="ShareBasedCompensationPerformanceGoalsMetrics3" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ShareBasedCompensationPerformanceGoalsMetrics4" name="ShareBasedCompensationPerformanceGoalsMetrics4" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock" name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ReturnSeekingAssetsMember" name="ReturnSeekingAssetsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OtherAndEliminationsMember" name="OtherAndEliminationsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_WaterMember" name="WaterMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_WastewaterMember" name="WastewaterMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OtherMember" name="OtherMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ResidentialMember" name="ResidentialMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_CommercialMember" name="CommercialMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FireProtectionMember" name="FireProtectionMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_IndustrialMember" name="IndustrialMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OtherWaterMember" name="OtherWaterMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OtherWastewaterMember" name="OtherWastewaterMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_AlternativeRevenueProgramMember" name="AlternativeRevenueProgramMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_OtherUtilityMember" name="OtherUtilityMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_AssetsAndLeaseLiability" name="AssetsAndLeaseLiability" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="wtr_LdcFundingLlcMember" name="LdcFundingLlcMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_LimerickMember" name="LimerickMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_WastewaterUtilitySystemMember" name="WastewaterUtilitySystemMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_NorritonTownshipMember" name="NorritonTownshipMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_CheltenhamTownshipMember" name="CheltenhamTownshipMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_CustomerRefundsMember" name="CustomerRefundsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_BondsBMember" name="BondsBMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_BondsCMember" name="BondsCMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_BondsDMember" name="BondsDMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_TaxExemptBondMember" name="TaxExemptBondMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_UnsecuredRevolvingCreditFacilityMaturityYearCMember" name="UnsecuredRevolvingCreditFacilityMaturityYearCMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_FirstMortgageBondsMaturityYearZMember" name="FirstMortgageBondsMaturityYearZMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_BusinessCombinationIncreasedDecreaseInRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet" name="BusinessCombinationIncreasedDecreaseInRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="wtr_TaxAdjustmentAmortizationPeriod" name="TaxAdjustmentAmortizationPeriod" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="wtr_ScheduleOfNetPeriodicBenefitCostAmortized" name="ScheduleOfNetPeriodicBenefitCostAmortized" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
</schema>
