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  <xs:element id="awr_DefinedBenefitPlanAmountsRecognizedInRegulatoryAssetsLiabilityAbstract" abstract="true" name="DefinedBenefitPlanAmountsRecognizedInRegulatoryAssetsLiabilityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="awr_DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiabilityPriorServiceCostCredit" abstract="false" name="DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiabilityPriorServiceCostCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanAmountsRecognizedInRegulatoryAssetLiabilityNetGainsLosses" abstract="false" name="DefinedBenefitPlanAmountsRecognizedInRegulatoryAssetLiabilityNetGainsLosses" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiability" abstract="false" name="DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanAmountsUnfundedAccruedPensionCost" abstract="false" name="DefinedBenefitPlanAmountsUnfundedAccruedPensionCost" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetsLiabilitiesNet" abstract="false" name="DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetsLiabilitiesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanChangeInPlanAssetsAndBenefitObligationsRecognizedInRegulatoryAssetsRollForward" abstract="true" name="DefinedBenefitPlanChangeInPlanAssetsAndBenefitObligationsRecognizedInRegulatoryAssetsRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="awr_DefinedBenefitPlanNetGainsLossesRegulatoryAssets" abstract="false" name="DefinedBenefitPlanNetGainsLossesRegulatoryAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiabilityNewPriorServiceCostCredit" abstract="false" name="DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiabilityNewPriorServiceCostCredit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanAmortizationOfPriorServiceCostCreditRegulatoryAssets" abstract="false" name="DefinedBenefitPlanAmortizationOfPriorServiceCostCreditRegulatoryAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanAmortizationOfGainsLossesRegulatoryAssets" abstract="false" name="DefinedBenefitPlanAmortizationOfGainsLossesRegulatoryAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanCostRecognizedInRegulatoryAssetsLiability" abstract="false" name="DefinedBenefitPlanCostRecognizedInRegulatoryAssetsLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanNetPeriodicBenefitCostAndCostRecognizedInRegulatoryAssets" abstract="false" name="DefinedBenefitPlanNetPeriodicBenefitCostAndCostRecognizedInRegulatoryAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_DefinedBenefitPlanNetPeriodicBenefitCostBeforeAllocationToOverheadPool" abstract="false" name="DefinedBenefitPlanNetPeriodicBenefitCostBeforeAllocationToOverheadPool" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_USSmallCapStocksMember" abstract="true" name="USSmallCapStocksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_USLargeCapStocksMember" abstract="true" name="USLargeCapStocksMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_InternationalFundsMember" abstract="true" name="InternationalFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_DefinedBenefitPlanExpectedFutureBenefitPayment" abstract="false" name="DefinedBenefitPlanExpectedFutureBenefitPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_EmployeePlans2016And2003And2013DirectorsPlanMember" abstract="true" name="EmployeePlans2016And2003And2013DirectorsPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_A2003and2013DirectorsplansMember" abstract="true" name="A2003and2013DirectorsplansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_EmployeesAndDirectorMember" abstract="true" name="EmployeesAndDirectorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_NumberOfStockIncentivePlans" abstract="false" name="NumberOfStockIncentivePlans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="awr_ChangeInControlTerm" abstract="false" name="ChangeInControlTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="awr_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockEntitledToBeReceivedUnderEachAward" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockEntitledToBeReceivedUnderEachAward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="awr_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOfThirtyThreePercentFirstTwoYears" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodOfThirtyThreePercentFirstTwoYears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="awr_VestingRightsPercentageInThirdYearFromGrantDate" abstract="false" name="VestingRightsPercentageInThirdYearFromGrantDate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="awr_ShareBasedCompensationArrangementsbyShareBasedPaymentAwardOptionsMinimumAgeforAwardstoVestImmediately" abstract="false" name="ShareBasedCompensationArrangementsbyShareBasedPaymentAwardOptionsMinimumAgeforAwardstoVestImmediately" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="awr_PercentageofTargetAmountofPerformanceShares" abstract="false" name="PercentageofTargetAmountofPerformanceShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="awr_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsPerformanceCriteriaAdjustment" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsPerformanceCriteriaAdjustment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="awr_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsPerformanceCriteriaAdjustmentWeightedAverageGrantDateFairValue" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsPerformanceCriteriaAdjustmentWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="awr_WaterPurchaseCommitmentsMember" abstract="true" name="WaterPurchaseCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_ElectricPowerPurchaseCommitmentsMember" abstract="true" name="ElectricPowerPurchaseCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_ElectricRenewableEnergyCreditPurchaseCommitmentsMember" abstract="true" name="ElectricRenewableEnergyCreditPurchaseCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="awr_VariousThirdPartiesMember" abstract="true" name="VariousThirdPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_OtherVariousThirdPartiesMember" abstract="true" name="OtherVariousThirdPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_RenewablesPortfolioStandardMember" abstract="true" name="RenewablesPortfolioStandardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="awr_RenewablesPortfolioStandardBundledProductMember" abstract="true" name="RenewablesPortfolioStandardBundledProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="awr_PurchasedRenewableEnergyCreditsNumber" abstract="false" name="PurchasedRenewableEnergyCreditsNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="awr_PeriodofAgreementforPurchaseofRenewableEnergyCredits" abstract="false" name="PeriodofAgreementforPurchaseofRenewableEnergyCredits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="awr_BundledPurchasedRenewableEnergyCreditsNumber" abstract="false" name="BundledPurchasedRenewableEnergyCreditsNumber" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="awr_PurchasedRenewableEnergyCreditsNumberDeliveredIn2023" abstract="false" name="PurchasedRenewableEnergyCreditsNumberDeliveredIn2023" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="awr_PurchasedRenewableEnergyCreditsNumberDeliveredIn2024" abstract="false" name="PurchasedRenewableEnergyCreditsNumberDeliveredIn2024" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="awr_EnvironmentalCleanUpAndRemediationMember" abstract="true" name="EnvironmentalCleanUpAndRemediationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="awr_NumberOfPlantSites" abstract="false" name="NumberOfPlantSites" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="awr_EnvironmentalLossContingenciesPaidByThirdParty" abstract="false" name="EnvironmentalLossContingenciesPaidByThirdParty" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag" abstract="false" name="EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="awr_AssetsOtherThanPropertyPlantAndEquipmentNet" abstract="false" name="AssetsOtherThanPropertyPlantAndEquipmentNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_AllowanceForDoubtfulAccountsReceivableTable" abstract="true" name="AllowanceForDoubtfulAccountsReceivableTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="awr_AllowanceForDoubtfulAccountsReceivableLineItems" abstract="true" name="AllowanceForDoubtfulAccountsReceivableLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="awr_ProvisionForDoubtfulAccountsContinuingOperation" abstract="false" name="ProvisionForDoubtfulAccountsContinuingOperation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries" abstract="false" name="AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_AllowanceForDoubtfulAccountsReceivableAbstract" abstract="true" name="AllowanceForDoubtfulAccountsReceivableAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="awr_AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer" abstract="false" name="AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable" abstract="false" name="AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_ReliefFunding" abstract="false" name="ReliefFunding" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_ScheduleOfCashFlowSupplementalDisclosuresTable" abstract="true" name="ScheduleOfCashFlowSupplementalDisclosuresTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="awr_ScheduleOfCashFlowSupplementalDisclosuresLineItems" abstract="true" name="ScheduleOfCashFlowSupplementalDisclosuresLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="awr_TaxesAndInterestPaidAbstract" abstract="true" name="TaxesAndInterestPaidAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="awr_AccruedIncomeTaxesAndOtherLiabilitiesNoncurrent" abstract="false" name="AccruedIncomeTaxesAndOtherLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_SalesRevenueNetAndOtherIncome" abstract="false" name="SalesRevenueNetAndOtherIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_OperatingExpensesandOtherExpenses" abstract="false" name="OperatingExpensesandOtherExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_OperatingIncomeLossIncludingOtherIncome" abstract="false" name="OperatingIncomeLossIncludingOtherIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="awr_PaymentsForProceedsFromNotesPayableToBank" abstract="false" name="PaymentsForProceedsFromNotesPayableToBank" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
