﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2022v5.0" xsi:schemaLocation="http://www.irs.gov/efile">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-09-07T16:22:54-07:00</ReturnTs>
    <TaxPeriodEndDt>2023-06-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>953255470</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>JOHN RYAN &amp; CO</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>717 MAIN ST</AddressLine1Txt>
        <CityNm>HALF MOON BAY</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
        <ZIPCd>94019</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2022-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>946183323</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>REDWOOD TERRACE WATER SYSTEMS</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>REDW</BusinessNameControlTxt>
      <PhoneNum>6507995366</PhoneNum>
      <USAddress>
        <AddressLine1Txt>202 SYLVAN WAY</AddressLine1Txt>
        <CityNm>LA HONDA</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
        <ZIPCd>94020</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>TIM MACMILLAN</PersonNm>
      <PersonTitleTxt>PRESIDENT</PersonTitleTxt>
      <PhoneNum>6507995366</PhoneNum>
      <SignatureDt>2023-11-16</SignatureDt>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>Amanda R Ayoob</PreparerPersonNm>
      <PTIN>P02250456</PTIN>
      <PhoneNum>6504164397</PhoneNum>
      <SelfEmployedInd>X</SelfEmployedInd>
    </PreparerPersonGrp>
    <TaxYr>2022</TaxYr>
    <BuildTS>2024-08-08 14:25:15Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="2">
    <IRS990EZ documentId="IRS990EZ-01" referenceDocumentId="IRS990ScheduleO-01">
      <AddressChangeInd>X</AddressChangeInd>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
      <Organization501cInd organization501cTypeTxt="12">X</Organization501cInd>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>18960</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>0</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>0</ProgramServiceRevenueAmt>
      <MembershipDuesAmt>18960</MembershipDuesAmt>
      <InvestmentIncomeAmt>0</InvestmentIncomeAmt>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <GainOrLossFromSaleOfAssetsAmt>0</GainOrLossFromSaleOfAssetsAmt>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>0</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>0</SpecialEventsNetIncomeLossAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>0</GrossProfitLossSlsOfInvntryAmt>
      <TotalRevenueAmt>18960</TotalRevenueAmt>
      <OtherExpensesTotalAmt>29107</OtherExpensesTotalAmt>
      <TotalExpensesAmt>29107</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-10147</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>69754</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>59607</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>19898</BOYAmt>
        <EOYAmt>9751</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <LandAndBuildingsGrp>
        <BOYAmt>49856</BOYAmt>
        <EOYAmt>49856</EOYAmt>
      </LandAndBuildingsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>69754</BOYAmt>
        <EOYAmt>59607</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>69754</BOYAmt>
        <EOYAmt>59607</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>community-owned water system</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>community-owned water system</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
      </ProgramSrvcAccomplishmentGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Timothy Macmillan</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Nadiya Hayes</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Jude Seyk</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Scott Hendrickson</PersonNm>
        <TitleTxt>Secretary</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <InitiationFeesAndCapContriAmt>0</InitiationFeesAndCapContriAmt>
      <GrossReceiptsForPublicUseAmt>0</GrossReceiptsForPublicUseAmt>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>Jude Seyk</PersonNm>
        <USAddress>
          <AddressLine1Txt>6800 la Honda Road</AddressLine1Txt>
          <CityNm>La Honda</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94020</ZIPCd>
        </USAddress>
        <PhoneNum>6504001926</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
    </IRS990EZ>
    <IRS990ScheduleO documentId="IRS990ScheduleO-01" softwareId="22015534">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Engineering 11127.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Insurance 2375.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Dues &amp; Subscriptions 325.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Utilities 1322.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Riparian Contract 4800.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Water Testing 3591.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Supplies &amp; Materials 3788.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Depreciation 1779.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>