<?xml version="1.0" encoding="UTF-8"?>
<!--REG30PARAB V1.0 (01-06-2026)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Regulation_30_Para_B_Of_Part_A_Of_Schedule_III/2026-04-30/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2026-04-30.xsd"/><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">ENVIRO</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-11-11</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_AwardingOfOrdersOrContracts"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">ENVIRO</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-11-11</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIIIAxis">in-capmkt:AwardingOfOrdersOrContractsMember</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:context id="I_AwardingOfOrdersOrContractsMember"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/NSESymbol">ENVIRO</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-11-11</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:AwardingOrBaggingOrReceivingOrAmendmentOrTerminationOfOrdersOrContractsAsPerSubPara4OfParaBAxis">in-capmkt:AwardingOfOrdersOrContractsMember</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">ENVIRO</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">Envirotech Systems Limited</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">000000</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE0SUH01015</in-capmkt:ISIN><in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">Awarding, Bagging/Receiving, Amendment or termination of orders/contracts (Sub-para 4-Para B)</in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="I_AwardingOfOrdersOrContracts">Awarding of order(s)/contract(s)</in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">New</in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting contextRef="MainI">false</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting><in-capmkt:DateOfOccurrenceOfEventOrInformation contextRef="MainI">2026-11-11</in-capmkt:DateOfOccurrenceOfEventOrInformation><in-capmkt:TimeOfOccurrenceOfEventOrInformation contextRef="MainI">12:00:00</in-capmkt:TimeOfOccurrenceOfEventOrInformation><in-capmkt:DateOfReport contextRef="MainI">2026-11-11</in-capmkt:DateOfReport><in-capmkt:NameOfTheEntityToWhichOrdersOrContractsIsAwarded contextRef="I_AwardingOfOrdersOrContractsMember">GKR Future Technologies Private Limited</in-capmkt:NameOfTheEntityToWhichOrdersOrContractsIsAwarded><in-capmkt:WhetherTheOrdersOrContractsIsOrdinaryCourseOfBusiness contextRef="I_AwardingOfOrdersOrContractsMember">true</in-capmkt:WhetherTheOrdersOrContractsIsOrdinaryCourseOfBusiness><in-capmkt:WhetherOrdersOrContractsIsAwardedToDomesticOrInternationalEntity contextRef="I_AwardingOfOrdersOrContractsMember">Domestic</in-capmkt:WhetherOrdersOrContractsIsAwardedToDomesticOrInternationalEntity><in-capmkt:WhetherTheCounterpartyIsIndianListedEntity contextRef="I_AwardingOfOrdersOrContractsMember">false</in-capmkt:WhetherTheCounterpartyIsIndianListedEntity><in-capmkt:LEIOrCINOrRegistrationNumberOfTheCounterparty contextRef="I_AwardingOfOrdersOrContractsMember">U74900TG2013PTC091284</in-capmkt:LEIOrCINOrRegistrationNumberOfTheCounterparty><in-capmkt:WhetherTheCounterpartyBelongsToGroupCompaniesOfAnyIndianListedEntity contextRef="I_AwardingOfOrdersOrContractsMember">false</in-capmkt:WhetherTheCounterpartyBelongsToGroupCompaniesOfAnyIndianListedEntity><in-capmkt:NameOfTheCountryInWhichCounterpartyIsExists contextRef="I_AwardingOfOrdersOrContractsMember">India</in-capmkt:NameOfTheCountryInWhichCounterpartyIsExists><in-capmkt:DateOfAwardOfOrdersOrContracts contextRef="I_AwardingOfOrdersOrContractsMember">2026-11-11</in-capmkt:DateOfAwardOfOrdersOrContracts><in-capmkt:AmountOfTheOrdersOrContracts contextRef="I_AwardingOfOrdersOrContractsMember" unitRef="INR" decimals="0">10712040</in-capmkt:AmountOfTheOrdersOrContracts><in-capmkt:SignificantTermsAndConditionsOfOrdersOrContractsIsAwarded contextRef="I_AwardingOfOrdersOrContractsMember">The performance of Works by the Contractor is
exclusively governed and regulated by the terms and
conditions of the SO Documents which include the
Purchase Order, the annexures to the Purchase Order
and other correspondence, as may be attached herein
or incorporated herein by reference. Upon
acceptance of the SO Documents, the Contractor
waives off all its general terms and conditions, as
may be applicable to the performance of the Works</in-capmkt:SignificantTermsAndConditionsOfOrdersOrContractsIsAwarded><in-capmkt:TimePeriodToWhichOrdersOrContractsIsAssociated contextRef="I_AwardingOfOrdersOrContractsMember">As per the schedule provided by the Project
Manager and agreed terms of the Purchase Order.</in-capmkt:TimePeriodToWhichOrdersOrContractsIsAssociated><in-capmkt:BroadCommercialConsiderationOrSizeOfTheOrdersOrContracts contextRef="I_AwardingOfOrdersOrContractsMember">₹1,07,12,040.00/- (Rupees One Crore Seven Lakh
Twelve Thousand Forty only) inclusive of
applicable taxes</in-capmkt:BroadCommercialConsiderationOrSizeOfTheOrdersOrContracts><in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupCompaniesHaveAnyInterestInThatEntityToWhomTheOrdersOrContractsIsAwarded contextRef="I_AwardingOfOrdersOrContractsMember">false</in-capmkt:WhetherThePromoterOrPromoterGroupOrGroupCompaniesHaveAnyInterestInThatEntityToWhomTheOrdersOrContractsIsAwarded><in-capmkt:WhetherTheOrderOrContractWouldFallWithinRelatedPartyTransactions contextRef="I_AwardingOfOrdersOrContractsMember">false</in-capmkt:WhetherTheOrderOrContractWouldFallWithinRelatedPartyTransactions></xbrli:xbrl>
