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Texas Tap Water Quality: Is It Safe to Drink?

2026 EPA water quality data for 4,654 community water systems serving a combined 32,497,353 people in Texas. Find your water system to see violations, PFAS results, lead testing, and a safety grade — free.

Texas has the second-most community water systems in the country, sourcing from reservoirs, the Edwards and Ogallala Aquifers, and desalination plants. Naturally occurring arsenic, radium, and fluoride are found in many groundwater sources, particularly in West Texas. Water hardness varies widely, from soft in East Texas to very hard in the Hill Country and Permian Basin.

Find Your Water System in Texas

Enter your ZIP code to see EPA violations, lead test results, PFAS data, and a safety grade for your water.

📊 Data from EPA’s SDWIS · 🔄 Updated quarterly · 🏛️ 4,654 water systems in Texas

Cities in Texas

HoustonSan AntonioDallasAustinFort WorthEl PasoArlingtonCorpus ChristiPlanoLubbockLaredoIrvingGarlandFriscoAmarilloGrand PrairieMcKinneyBrownsvilleKilleenPasadenaMesquiteMcAllenDentonWacoMidlandCarrolltonAbileneLewisvillePearlandRound RockCollege StationThe WoodlandsRichardsonBeaumontLeague CityOdessaSugar LandTylerAllenWichita FallsEdinburgSan AngeloNew BraunfelsConroeAtascocitaMissionBryanBaytownTempleLongviewPharrFlower MoundCedar ParkMissouri CityMansfieldGeorgetownHarlingenNorth Richland HillsSan MarcosVictoriaPflugervilleSpringRowlettLeanderEulessWyliePort ArthurDeSotoGalvestonTexas CityGrapevineBedfordBurlesonCedar HillKyleLittle ElmRockwallHuntsvilleHaltom CityKellerThe ColonyShermanChannelviewSchertzCoppellWaxahachieLancasterFriendswoodWeslacoDuncanvilleHurstRosenbergMission BendCopperas CoveTexarkanaFarmers BranchLa PorteSan JuanMidlothianSocorroDel RioTimberwood ParkLufkinDeer ParkHarker HeightsCiboloWeatherfordNacogdochesCanyon LakeCleburneProsperWest OdessaSouthlakeSeguinHuttoGreenvilleEagle PassConverseLake JacksonSachseAlvinBalch SpringsBig SpringColleyvilleFort HoodForneyKingsvilleUniversity ParkCorsicanaDenisonSan BenitoCloverleafParisBenbrookKerrvilleSaginawFresnoMarshallWataugaSiennaBeltonKatyPecan GroveHorizon CityCorinthBrushy CreekFulshearCelinaDickinsonStephenvilleMurphyEnnisPortlandPlainviewAlamoUniversal CityAngletonOrangeFateCinco RanchLakewayBrownwoodPalestineSeagovilleAnnaNederlandAltonBoerneLa MarquePrincetonCrowleyWhite SettlementTerrellAliceSteiner RanchBay CityBrenhamGainesvilleStaffordBellaireGrovesAddisonPampaDonnaHumbleTaylorGlenn HeightsMercedesSouth HoustonMount PleasantHewittSulphur SpringsHighlandGatesvilleLive OakRendonAldineUvaldeManorRio Grande CityPalmviewMelissaCanyonRoyse CityMineral WellsBudaWest University PlaceHerefordRed OakLockhartDumasJacksonvilleHidalgoWells BranchForest HillBeevillePort NechesLumbertonSeabrookAzleKilgoreAndrewsHendersonTrophy ClubAthensSanta FeTomballLevellandFort BlissBorgerRobinsonWebsterEl CampoRichmondTown of PecosLantanaPort LavacaRomaFour CornersLeon ValleySnyderManvelGranburySelmaHornsby BendFredericksburgBurkburnettFreeportPleasantonCluteLa HomaGalena ParkSweetwaterBonhamBellmeadFairviewBacliffRaymondvilleRockportRobstownSan ElizarioScenic OaksElginVernon

Showing the 250 largest of 4,654 community water systems in Texas, by population served. Use the ZIP search above or the city links to find a smaller system.

CITY OF HOUSTON HOUSTON, TX · 2,970,543 people · Surface Water SAN ANTONIO WATER SYSTEM SAN ANTONIO, TX · 2,113,151 people · Surface Water Purchased DALLAS WATER UTILITY DALLAS, TX · 1,356,479 people · Surface Water CITY OF AUSTIN WATER & WASTEWATER AUSTIN, TX · 1,115,323 people · Surface Water CITY OF FORT WORTH FORT WORTH, TX · 955,900 people · Surface Water EL PASO WATER UTILITIES PUBLIC SERVICE B EL PASO, TX · 747,168 people · Surface Water CITY OF ARLINGTON ARLINGTON, TX · 413,955 people · Surface Water CITY OF CORPUS CHRISTI CORPUS CHRISTI, TX · 318,387 people · Surface Water CITY OF PLANO PLANO, TX · 292,059 people · Surface Water Purchased LUBBOCK PUBLIC WATER SYSTEM LUBBOCK, TX · 275,041 people · Surface Water CITY OF IRVING IRVING, TX · 264,546 people · Surface Water Purchased CITY OF LAREDO LAREDO, TX · 260,046 people · Surface Water CITY OF GARLAND GARLAND, TX · 248,822 people · Surface Water Purchased CITY OF FRISCO FRISCO, TX · 231,910 people · Surface Water Purchased CITY OF MCKINNEY MCKINNEY, TX · 224,043 people · Surface Water Purchased CITY OF GRAND PRAIRIE GRAND PRAIRIE, TX · 201,843 people · Surface Water Purchased AMARILLO MUNICIPAL WATER SYSTEM AMARILLO, TX · 201,291 people · Surface Water BROWNSVILLE PUBLIC UTILITIES BOARD BROWNSVILLE, TX · 201,249 people · Surface Water CITY OF GEORGETOWN GEORGETOWN, TX · 191,639 people · Surface Water MCALLEN PUBLIC UTILITY MCALLEN, TX · 189,957 people · Surface Water NORTH ALAMO WSC EDINBURG, TX · 171,195 people · Surface Water CITY OF MIDLAND WATER PURIFICATION PLANT MIDLAND, TX · 157,000 people · Surface Water CITY OF MESQUITE MESQUITE, TX · 152,020 people · Surface Water Purchased CITY OF PASADENA PASADENA, TX · 152,000 people · Surface Water Purchased CITY OF KILLEEN KILLEEN, TX · 151,261 people · Surface Water Purchased CITY OF DENTON DENTON, TX · 150,037 people · Surface Water CITY OF WACO WACO, TX · 146,241 people · Surface Water CITY OF LEWISVILLE LEWISVILLE, TX · 140,880 people · Surface Water CITY OF CARROLLTON CARROLLTON, TX · 136,170 people · Surface Water Purchased CITY OF ROUND ROCK ROUND ROCK, TX · 130,662 people · Surface Water CITY OF LEAGUE CITY LEAGUE CITY, TX · 128,412 people · Surface Water Purchased CITY OF PEARLAND PEARLAND, TX · 125,828 people · Surface Water CITY OF ABILENE ABILENE, TX · 125,182 people · Surface Water CITY OF ODESSA ODESSA, TX · 123,334 people · Surface Water CITY OF RICHARDSON RICHARDSON, TX · 122,615 people · Surface Water Purchased NEW BRAUNFELS UTILITIES NEW BRAUNFELS, TX · 116,477 people · Surface Water CITY OF BEAUMONT WATER UTILITY DEPT BEAUMONT, TX · 115,282 people · Surface Water CITY OF CONROE CONROE, TX · 113,912 people · Surface Water Purchased MUSTANG SUD AUBREY, TX · 110,826 people · Surface Water Purchased CITY OF TYLER TYLER, TX · 107,000 people · Surface Water CITY OF SAN ANGELO SAN ANGELO, TX · 105,229 people · Surface Water CITY OF ALLEN ALLEN, TX · 104,870 people · Surface Water Purchased CITY OF COLLEGE STATION COLLEGE STATION, TX · 104,103 people · Groundwater CITY OF WICHITA FALLS WICHITA FALLS, TX · 102,316 people · Surface Water CITY OF LEANDER LEANDER, TX · 98,330 people · Surface Water CITY OF TEMPLE TEMPLE, TX · 94,935 people · Surface Water CITY OF SUGAR LAND SUGAR LAND, TX · 90,909 people · Surface Water CLEAR LAKE CITY WATER AUTHORITY HOUSTON, TX · 89,702 people · Surface Water Purchased CITY OF BRYAN BRYAN, TX · 87,816 people · Groundwater CITY OF CEDAR PARK CEDAR PARK, TX · 86,939 people · Surface Water AQUA WSC BASTROP, TX · 86,325 people · Groundwater CITY OF BAYTOWN BAYTOWN, TX · 86,004 people · Surface Water Purchased HARLINGEN WATER WORKS SYSTEM HARLINGEN, TX · 85,900 people · Surface Water CITY OF EDINBURG EDINBURG, TX · 85,224 people · Surface Water CITY OF LONGVIEW LONGVIEW, TX · 83,236 people · Surface Water CITY OF HOUSTON UD 5 - KINGWOOD HOUSTON, TX · 80,073 people · Groundwater TOWN OF FLOWER MOUND FLOWER MOUND, TX · 80,000 people · Surface Water Purchased CITY OF PHARR PHARR, TX · 79,715 people · Surface Water CITY OF MANSFIELD MANSFIELD, TX · 77,142 people · Surface Water CITY OF MISSION MISSION, TX · 77,058 people · Surface Water CITY OF NORTH RICHLAND HILLS NORTH RICHLAND HILLS, TX · 74,859 people · Surface Water Purchased CITY OF SAN MARCOS SAN MARCOS, TX · 72,970 people · Surface Water SOUTHERN UTILITIES TYLER, TX · 69,735 people · Surface Water Purchased SHARYLAND WSC MISSION, TX · 68,562 people · Surface Water CITY OF VICTORIA VICTORIA, TX · 66,932 people · Surface Water CITY OF ROWLETT ROWLETT, TX · 66,212 people · Surface Water Purchased JOHNSON COUNTY SUD JOSHUA, TX · 65,517 people · Surface Water Purchased CITY OF PFLUGERVILLE PFLUGERVILLE, TX · 63,464 people · Surface Water CITY OF EULESS EULESS, TX · 61,601 people · Surface Water Purchased TEXAS A&M UNIVERSITY MAIN CAMPUS COLLEGE STATION, TX · 61,000 people · Groundwater LOWER VALLEY WATER DISTRICT CLINT, TX · 59,049 people · Surface Water Purchased CITY OF DESOTO DESOTO, TX · 57,999 people · Surface Water Purchased CITY OF PORT ARTHUR PORT ARTHUR, TX · 56,039 people · Surface Water CITY OF EAGLE PASS EAGLE PASS, TX · 54,900 people · Surface Water CITY OF TEXAS CITY TEXAS CITY, TX · 54,357 people · Surface Water Purchased CITY OF BURLESON BURLESON, TX · 53,381 people · Surface Water Purchased CITY OF CELINA CELINA, TX · 52,701 people · Surface Water Purchased GREEN VALLEY SUD MARION, TX · 52,497 people · Surface Water Purchased CITY OF GALVESTON GALVESTON, TX · 52,326 people · Surface Water Purchased AGUA SUD MISSION, TX · 52,137 people · Surface Water CITY OF KYLE KYLE, TX · 52,000 people · Surface Water Purchased CITY OF LUFKIN LUFKIN, TX · 51,236 people · Groundwater CITY OF CEDAR HILL CEDAR HILL, TX · 50,904 people · Surface Water Purchased CITY OF WAXAHACHIE WAXAHACHIE, TX · 50,814 people · Surface Water CITY OF GRAPEVINE GRAPEVINE, TX · 50,631 people · Surface Water CITY OF NACOGDOCHES NACOGDOCHES, TX · 50,226 people · Surface Water CITY OF BEDFORD BEDFORD, TX · 49,900 people · Surface Water Purchased FORT BEND COUNTY WCID 2 STAFFORD, TX · 49,173 people · Surface Water CITY OF HUNTSVILLE HUNTSVILLE, TX · 48,522 people · Surface Water Purchased CITY OF WYLIE WYLIE, TX · 47,322 people · Surface Water Purchased CITY OF ROCKWALL ROCKWALL, TX · 47,251 people · Surface Water Purchased LAGUNA MADRE WATER DISTRICT PORT ISABEL, TX · 46,674 people · Surface Water ROCKETT SUD RED OAK, TX · 46,614 people · Surface Water Purchased CITY OF KELLER KELLER, TX · 46,308 people · Surface Water Purchased CITY OF HALTOM CITY HALTOM CITY, TX · 46,260 people · Surface Water Purchased CITY OF THE COLONY THE COLONY, TX · 45,367 people · Surface Water Purchased TRAVIS COUNTY WCID 17 AUSTIN, TX · 45,165 people · Surface Water CLWSC CANYON LAKE SHORES CANYON LAKE, TX · 44,196 people · Surface Water CITY OF SHERMAN SHERMAN, TX · 43,645 people · Surface Water TEXAS STATE UNIVERSITY - SAN MARCOS SAN MARCOS, TX · 43,552 people · Groundwater CITY OF COPPELL COPPELL, TX · 43,193 people · Surface Water Purchased CITY OF FRIENDSWOOD FRIENDSWOOD, TX · 43,190 people · Surface Water Purchased TOWN OF PROSPER PROSPER, TX · 42,598 people · Surface Water Purchased CITY OF ROSENBERG ROSENBERG, TX · 42,158 people · Surface Water Purchased CITY OF SCHERTZ SCHERTZ, TX · 41,948 people · Groundwater CITY OF COPPERAS COVE COPPERAS COVE, TX · 41,669 people · Surface Water Purchased TOWN OF LITTLE ELM LITTLE ELM, TX · 41,000 people · Surface Water Purchased HARRIS COUNTY MUD 165 HOUSTON, TX · 40,503 people · Surface Water Purchased CITY OF HURST HURST, TX · 40,454 people · Surface Water Purchased CITY OF LANCASTER LANCASTER, TX · 40,449 people · Surface Water Purchased CITY OF FARMERS BRANCH FARMERS BRANCH, TX · 40,246 people · Surface Water Purchased CITY OF WESLACO WESLACO, TX · 40,033 people · Surface Water MANVILLE WSC COUPLAND, TX · 39,648 people · Surface Water Purchased CITY OF DUNCANVILLE DUNCANVILLE, TX · 39,413 people · Surface Water Purchased JBSA - SAM HOUSTON SAN ANTONIO, TX · 37,563 people · Groundwater CITY OF PRINCETON PRINCETON, TX · 37,019 people · Surface Water Purchased TEXARKANA WATER UTILITIES TEXARKANA, TX · 37,000 people · Surface Water PASEO DEL ESTE MUD 1 AUSTIN, TX · 36,773 people · Surface Water Purchased CITY OF LA PORTE LA PORTE, TX · 36,569 people · Surface Water Purchased DEL RIO UTILITIES COMMISSION DEL RIO, TX · 36,506 people · GWUDI CITY OF HARKER HEIGHTS HARKER HEIGHTS, TX · 35,957 people · Surface Water Purchased US ARMY SOUTH FORT CAVAZOS FORT HOOD, TX · 35,669 people · Surface Water Purchased WEST TRAVIS COUNTY PUBLIC UTILITY AGENCY AUSTIN, TX · 35,664 people · Surface Water SPRINGS HILL SUD SEGUIN, TX · 35,541 people · Surface Water GOFORTH SUD NIEDERWALD, TX · 34,893 people · Surface Water Purchased CITY OF DEER PARK DEER PARK, TX · 34,495 people · Surface Water Purchased CITY OF CLEBURNE CLEBURNE, TX · 34,075 people · Surface Water CITY OF FULSHEAR FULSHEAR, TX · 34,000 people · Groundwater BETHESDA WSC BURLESON, TX · 33,441 people · Surface Water Purchased CITY OF GREENVILLE GREENVILLE, TX · 33,354 people · Surface Water SJWTX TRIPLE PEAK PLANT CANYON LAKE, TX · 32,973 people · Surface Water CITY OF SEGUIN SEGUIN, TX · 32,736 people · Surface Water CITY OF WEATHERFORD WEATHERFORD, TX · 32,209 people · Surface Water CITY OF SOUTHLAKE SOUTHLAKE, TX · 31,576 people · Surface Water Purchased HORIZON REGIONAL MUD HORIZON CITY, TX · 31,542 people · Groundwater LUMBERTON MUD LUMBERTON, TX · 31,428 people · Groundwater CITY OF PALESTINE PALESTINE, TX · 31,272 people · Surface Water CITY OF SACHSE SACHSE, TX · 30,630 people · Surface Water Purchased GALVESTON COUNTY WCID 1 DICKINSON, TX · 30,399 people · Surface Water Purchased WALNUT CREEK SUD SPRINGTOWN, TX · 30,364 people · Surface Water CITY OF SAN JUAN SAN JUAN, TX · 30,000 people · Surface Water JONAH WATER SUD HUTTO, TX · 29,861 people · Surface Water Purchased CITY OF CONVERSE CONVERSE, TX · 29,709 people · Surface Water Purchased CITY OF FORNEY FORNEY, TX · 29,692 people · Surface Water Purchased CITY OF HUTTO HUTTO, TX · 29,580 people · Surface Water Purchased CITY OF FATE FATE, TX · 29,285 people · Surface Water Purchased CITY OF BALCH SPRINGS BALCH SPRINGS, TX · 28,300 people · Surface Water Purchased FORT BLISS MAIN POST AREA SAN DIMAS, CA · 28,000 people · Groundwater CITY OF MIDLOTHIAN MIDLOTHIAN, TX · 27,699 people · Surface Water CITY OF DENISON DENISON, TX · 27,500 people · Surface Water CITY OF ANGLETON ANGLETON, TX · 27,333 people · Surface Water Purchased CITY OF LAKE JACKSON LAKE JACKSON, TX · 27,314 people · Surface Water Purchased CITY OF BIG SPRING BIG SPRING, TX · 27,282 people · Surface Water CITY OF COLLEYVILLE COLLEYVILLE, TX · 26,599 people · Surface Water Purchased PORTER SPECIAL UTILITY DISTRICT PORTER, TX · 26,388 people · Groundwater CITY OF ALVIN ALVIN, TX · 26,244 people · Groundwater EAST CENTRAL SUD ADKINS, TX · 26,137 people · Surface Water Purchased MONTGOMERY TRACE WATER SYSTEM NAVASOTA, TX · 25,917 people · Surface Water Purchased CITY OF CORSICANA CORSICANA, TX · 25,885 people · Surface Water CASH SUD GREENVILLE, TX · 25,875 people · Surface Water LAMAR COUNTY WATER SUPPLY DISTRICT PARIS, TX · 25,530 people · Surface Water Purchased CITY OF KINGSVILLE KINGSVILLE, TX · 25,402 people · Surface Water Purchased CITY OF RICHMOND RICHMOND, TX · 25,326 people · Surface Water CITY OF UNIVERSITY PARK DALLAS, TX · 25,278 people · Surface Water Purchased CITY OF KATY KATY, TX · 25,253 people · Groundwater CITY OF PARIS PARIS, TX · 25,171 people · Surface Water WELLBORN SUD WELLBORN, TX · 25,065 people · Surface Water CITY OF ENNIS ENNIS, TX · 24,891 people · Surface Water CITY OF BOERNE BOERNE, TX · 24,769 people · Surface Water EAST RIO HONDO WSC RIO HONDO, TX · 24,756 people · Surface Water CULLEOKA WSC PRINCETON, TX · 24,615 people · Surface Water Purchased BRIDGESTONE MUD HOUSTON, TX · 24,528 people · Surface Water Purchased TIMBER LANE UTILITY DISTRICT HOUSTON, TX · 24,507 people · Groundwater BENBROOK WATER AUTHORITY BENBROOK, TX · 24,437 people · Surface Water WEST CEDAR CREEK MUD TOOL, TX · 24,414 people · Surface Water MONTGOMERY COUNTY MUD 46 THE WOODLANDS, TX · 24,399 people · Surface Water Purchased CITY OF SAN BENITO SAN BENITO, TX · 24,250 people · Surface Water MONTGOMERY COUNTY MUD 47 THE WOODLANDS, TX · 24,171 people · Surface Water Purchased MOUNTAIN PEAK SUD MIDLOTHIAN, TX · 23,988 people · Surface Water Purchased CITY OF ANNA ANNA, TX · 23,960 people · Surface Water Purchased CITY OF SAGINAW SAGINAW, TX · 23,890 people · Surface Water Purchased CITY OF WATAUGA WATAUGA, TX · 23,806 people · Surface Water Purchased NORTHWEST HARRIS COUNTY MUD 5 HOUSTON, TX · 23,766 people · Surface Water Purchased CITY OF KERRVILLE KERRVILLE, TX · 23,489 people · Surface Water CITY OF CORINTH CORINTH, TX · 23,213 people · Surface Water Purchased CITY OF STEPHENVILLE STEPHENVILLE, TX · 23,110 people · Surface Water Purchased CITY OF MARSHALL MARSHALL, TX · 23,091 people · Surface Water CITY OF BELTON BELTON, TX · 23,054 people · Surface Water Purchased CITY OF PORTLAND PORTLAND, TX · 22,933 people · Surface Water Purchased WINDERMERE COMMUNITY AUSTIN, TX · 21,231 people · Surface Water Purchased PLAINVIEW MUNICIPAL WATER SYSTEM PLAINVIEW, TX · 21,104 people · Surface Water CITY OF MURPHY MURPHY, TX · 21,082 people · Surface Water Purchased CITY OF ALAMO ALAMO, TX · 21,065 people · Surface Water BENTON CITY WSC LYTLE, TX · 20,940 people · Groundwater JBSA - LACKLAND JBSA LACKLAND, TX · 20,907 people · Groundwater SS WSC LAVERNIA, TX · 20,826 people · Groundwater CRYSTAL CLEAR SUD SAN MARCOS, TX · 20,766 people · Surface Water Purchased SARDIS LONE ELM WSC MIDLOTHIAN, TX · 20,736 people · Surface Water Purchased CITY OF TAYLOR TAYLOR, TX · 20,622 people · Surface Water Purchased ACTON MUD GRANBURY, TX · 20,458 people · Surface Water CITY OF CIBOLO CIBOLO, TX · 20,331 people · Surface Water Purchased CITY OF SEAGOVILLE SEAGOVILLE, TX · 20,156 people · Surface Water Purchased CITY OF UNIVERSAL CITY UNIVERSAL CITY, TX · 20,119 people · Groundwater CITY OF CROWLEY CROWLEY, TX · 19,935 people · Surface Water Purchased HARRIS COUNTY FWSD 51 HOUSTON, TX · 19,671 people · Surface Water Purchased CITY OF MANOR MANOR, TX · 19,620 people · Groundwater COUNTY LINE SUD UHLAND, TX · 19,609 people · Surface Water Purchased SHEPPARD AIR FORCE BASE SHEPPARD AFB, TX · 19,500 people · Surface Water Purchased BOLIVAR PENINSULA SUD CRYSTAL BEACH, TX · 19,476 people · Surface Water Purchased CITY OF ROMA ROMA, TX · 19,464 people · Surface Water CIMARRON MUD HOUSTON, TX · 19,338 people · Groundwater CITY OF ORANGE ORANGE, TX · 19,300 people · Groundwater CITY OF WEST UNIVERSITY PLACE WEST UNIVERSITY PLACE, TX · 19,200 people · Surface Water Purchased CITY OF ALICE ALICE, TX · 19,104 people · Surface Water HARRIS COUNTY MUD 82 HOUSTON, TX · 18,990 people · Groundwater CITY OF RIO GRANDE CITY RIO GRANDE, TX · 18,912 people · Surface Water CITY OF BROWNWOOD BROWNWOOD, TX · 18,862 people · Surface Water Purchased CITY OF NEDERLAND NEDERLAND, TX · 18,856 people · Surface Water CITY OF LOCKHART LOCKHART, TX · 18,800 people · Surface Water Purchased CITY OF DONNA DONNA, TX · 18,720 people · Surface Water CITY OF GLENN HEIGHTS GLENN HEIGHTS, TX · 18,718 people · Surface Water Purchased CITY OF RED OAK RED OAK, TX · 18,577 people · Surface Water Purchased CITY OF WHITE SETTLEMENT WHITE SETTLEMENT, TX · 18,522 people · Surface Water Purchased CITY OF BRENHAM BRENHAM, TX · 18,469 people · Surface Water CITY OF TERRELL TERRELL, TX · 18,432 people · Surface Water Purchased BRUSHY CREEK MUD ROUND ROCK, TX · 18,314 people · Surface Water NORTHWEST PARK MUD HOUSTON, TX · 18,168 people · Groundwater CLEAR BROOK CITY MUD HOUSTON, TX · 18,108 people · Surface Water Purchased CITY OF GAINESVILLE GAINESVILLE, TX · 18,107 people · Surface Water CITY OF BELLAIRE BELLAIRE, TX · 18,090 people · Surface Water Purchased CITY OF BAY CITY BAY CITY, TX · 18,061 people · Groundwater CITY OF MELISSA MELISSA, TX · 18,020 people · Surface Water Purchased HARRIS MONTGOMERY COUNTIES MUD 386 HOUSTON, TX · 18,018 people · Groundwater Purchased WELLS BRANCH MUD 1 AUSTIN, TX · 18,015 people · Surface Water Purchased CITY OF PAMPA PAMPA, TX · 17,994 people · Surface Water CITY OF PLEASANTON PLEASANTON, TX · 17,985 people · Groundwater MILITARY HWY WSC LAS RUSIAS PROGRESO, TX · 17,943 people · Surface Water Purchased CITY OF ATHENS ATHENS, TX · 17,934 people · Surface Water Purchased HARRIS COUNTY MUD 53 HOUSTON, TX · 17,856 people · Surface Water Purchased LAKE CITIES MUNICIPAL UTILITY AUTHORITY LAKE DALLAS, TX · 17,826 people · Surface Water Purchased KEMPNER WSC KEMPNER, TX · 17,721 people · Surface Water TRI SUD MOUNT PLEASANT, TX · 17,641 people · Surface Water Purchased EAST FORK SUD WYLIE, TX · 17,589 people · Surface Water Purchased CITY OF TOMBALL TOMBALL, TX · 17,532 people · Groundwater CITY OF UVALDE UVALDE, TX · 17,450 people · Groundwater CITY OF SOUTH HOUSTON SOUTH HOUSTON, TX · 17,397 people · Surface Water Purchased TOWN OF ADDISON ADDISON, TX · 17,257 people · Surface Water Purchased HARRIS COUNTY MUD 26 HOUSTON, TX · 17,178 people · Groundwater HARRIS COUNTY MUD 71 HOUSTON, TX · 17,079 people · Groundwater CITY OF HEWITT HEWITT, TX · 16,978 people · Surface Water Purchased

Texas Drinking Water: Frequently Asked Questions

Is Texas tap water safe to drink?

Texas has 4,654 community water systems regulated by the EPA serving a combined 32,497,353 people. Water quality varies by system — search above to find your specific utility and see its violation history, lead test results, and safety grade.

How many water systems are in Texas?

There are 4,654 EPA-regulated community water systems in Texas serving a combined 32,497,353 people. Each system is required to test for over 90 contaminants and publicly report any violations.

Does Texas have PFAS in its drinking water?

PFAS (forever chemicals) have been detected in water systems across the country, including Texas. The EPA finalized enforceable PFAS limits in 2024. Search for your specific water system above to see if PFAS were detected and whether levels exceed the new federal limits.

EPA data last updated: 2026-07-12