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    <ReturnTs>2024-02-24T12:10:57-05:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>810455969</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>WATER SERVICE INC</BusinessNameLine1Txt>
      </BusinessName>
      <InCareOfNm>% Lori R Cooper</InCareOfNm>
      <BusinessNameControlTxt>WATE</BusinessNameControlTxt>
      <ForeignPhoneNum>4068274295</ForeignPhoneNum>
      <USAddress>
        <AddressLine1Txt>PO BOX 1576 2 FIR STREET</AddressLine1Txt>
        <CityNm>TROUT CREEK</CityNm>
        <StateAbbreviationCd>MT</StateAbbreviationCd>
        <ZIPCd>598741576</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Lori R Cooper</PersonNm>
      <PersonTitleTxt>Secretary Treasurer</PersonTitleTxt>
      <SignatureDt>2024-02-24</SignatureDt>
    </BusinessOfficerGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
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      <GrossReceiptsAmt>69206</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ProgramServiceRevenueAmt>42229</ProgramServiceRevenueAmt>
      <InvestmentIncomeAmt>1074</InvestmentIncomeAmt>
      <GainOrLossFromSaleOfAssetsAmt>0</GainOrLossFromSaleOfAssetsAmt>
      <SpecialEventsNetIncomeLossAmt>0</SpecialEventsNetIncomeLossAmt>
      <GrossProfitLossSlsOfInvntryAmt>0</GrossProfitLossSlsOfInvntryAmt>
      <OtherRevenueTotalAmt>25903</OtherRevenueTotalAmt>
      <TotalRevenueAmt>69206</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>15560</GrantsAndSimilarAmountsPaidAmt>
      <SalariesOtherCompEmplBnftAmt>5150</SalariesOtherCompEmplBnftAmt>
      <OccupancyRentUtltsAndMaintAmt>14287</OccupancyRentUtltsAndMaintAmt>
      <PrintingPublicationsPostageAmt>2202</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>13585</OtherExpensesTotalAmt>
      <TotalExpensesAmt>50784</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>18422</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>322476</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>340898</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>265981</BOYAmt>
        <EOYAmt>292732</EOYAmt>
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      <LandAndBuildingsGrp>
        <BOYAmt>53195</BOYAmt>
        <EOYAmt>44656</EOYAmt>
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      <OtherAssetsTotalDetail>
        <BOYAmt>8219</BOYAmt>
        <EOYAmt>8489</EOYAmt>
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      <Form990TotalAssetsGrp>
        <BOYAmt>327395</BOYAmt>
        <EOYAmt>345877</EOYAmt>
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      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>4919</BOYAmt>
        <EOYAmt>4979</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>322476</BOYAmt>
        <EOYAmt>340898</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>Pumping storage Distribution of potable water to residences and small businesses who are members of the non-profit organization also for fire protection. Incudes ongoing maintenance wells tank water distribution lines testing of water per Water Quality Bureau etc. Incudes ongoing maintenance wells tank water distribution lines testing of water per Water Quality Bureau etc.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>NA</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>0</ProgramServiceExpensesAmt>
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      <ProgramSrvcAccomplishmentGrp>
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      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>NA</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>0</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Douglas Cooper</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">James Stonehocker</PersonNm>
        <TitleTxt>Vice President and Operator</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Elizabeth Glacken</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.5</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Lori R Cooper</PersonNm>
        <TitleTxt>Secretary Treasurer</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>4</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>5150</CompensationAmt>
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      <StatesWhereCopyOfReturnIsFldCd>MT</StatesWhereCopyOfReturnIsFldCd>
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        <PersonNm>Lori R Cooper</PersonNm>
        <USAddress>
          <AddressLine1Txt>PO BOX 1576</AddressLine1Txt>
          <AddressLine2Txt>2 Fir Street</AddressLine2Txt>
          <CityNm>TROUT CREEK</CityNm>
          <StateAbbreviationCd>MT</StateAbbreviationCd>
          <ZIPCd>598741576</ZIPCd>
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        <PhoneNum>4068274295</PhoneNum>
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      <ForeignOfficeInd>false</ForeignOfficeInd>
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      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
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      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd referenceDocumentName="IRS990ScheduleC">false</PoliticalCampaignActyInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 8</FormAndLineReferenceDesc>
        <ExplanationTxt>| Other Revenues:, Amount:| Late payment penalties, $98| ARPA funding repayment, $25805|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 10</FormAndLineReferenceDesc>
        <ExplanationTxt>| Grants And Similar Amounts Paid:, Amount:| Contracted Services for American Plan Rescue Act Mapping, $10129| Contracted Services for American Plan Rescue Act Engineering, $5431|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>| Other Expenses:, Amount:| Bad Debts, $305| Depreciation, $8539| Discounts allowed, $1147| Insurance, $1631| Licenses &amp; fees, $280| training, $31| travel, $272| Water Inspection fees, $925| taxes, $455|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part II, line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>| Explanation:, BOYAmount:, EOYAmount:| Easements, $8219, $8489|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part II, line 26</FormAndLineReferenceDesc>
        <ExplanationTxt>| Explanation:, BOYAmount:, EOYAmount:| prepaid water accounts 1909 membership deposits 3070, $4919, $4979|</ExplanationTxt>
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