Kansas tap water quality

856 active community water systems.

Largest water systems

GradeSystemPeopleHealth violations (5y)
AWaterOne (Water District No. 1 of Johnson County)490,0000
ACity of Wichita Water Utilities395,6990
AKansas City Board of Public Utilities152,9600
ACity of Olathe143,0140
ACity of Topeka125,9630
ACity of Lawrence95,2560
ACity of Manhattan54,7630
ACity of Salina46,4810
BCity of Hutchinson39,7121
ALeavenworth Water Department38,7570
DFrusi Water Treatment Plant35,7840
ACity of Garden City35,1260
AUniversity of Kansas35,0000
CCity of Dodge City27,1041
ACity of Derby25,4130
CCity of Emporia24,0092
ACity of Gardner23,9420
ACity of Hays21,0400
ACity of Pittsburg20,7380
ACity of Liberal19,6400
DCity of Junction City19,1675
ACity of Newton18,4330
CCity of Great Bend14,5800
ACity of McPherson13,9440
AFort Leavenworth American Water Ent LLC12,9340
ACity of El Dorado12,8100
BCity of Ottawa12,6041
AShawnee Co Rwd 4c12,0000
ACity of Arkansas City11,9290
ACity of Winfield11,7260
ACity of Haysville11,3150
ACity of Atchison10,6940
AMiami Co Rwd 210,3110
DCity of Parsons9,4795
ACity of Augusta9,2670
BCity of Coffeyville8,8471
ACity of Chanute8,6420
BCity of Park City8,5030
ACity of Independence8,4640
ACity of Bel Aire8,4480
ACity of Bonner Springs7,8050
ACity of Wellington7,6640
APottawatomie Co Rwd 17,5350
ACity of Fort Scott7,5130
ACity of Valley Center7,4190
ALan Del Water District7,3020
ABourbon Co Rwd 2c7,0500
ACity of Mulvane6,5870
DCity of Pratt6,5738
ACity of Abilene6,4680

Most issues (systems serving 10,000+)

D

City of Junction City

Serves 19,167 people · Groundwater · Full report →
5 health-based violations in the last 5 years; 8 monitoring/reporting violations; 3 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
D

Frusi Water Treatment Plant

Serves 35,784 people · Groundwater · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Other PFAS above 2024 limits (rule proposed for repeal): PFHxS, Hazard Index; Lead 90th percentile below the action level (2023).
C

City of Dodge City

Serves 27,104 people · Groundwater · Full report →
1 health-based violation in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Lead 90th percentile below the action level (2025).
C

City of Great Bend

Serves 14,580 people · Groundwater · Full report →
No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Other PFAS above 2024 limits (rule proposed for repeal): PFHxS, Hazard Index; Lead 90th percentile below the action level (2024).
C

City of Emporia

Serves 24,009 people · Surface water · Full report →
2 health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
B

City of Hutchinson

Serves 39,712 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 1 monitoring/reporting violation; 1 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
B

City of Ottawa

Serves 12,604 people · Surface water · Full report →
1 health-based violation in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A

City of Olathe

Serves 143,014 people · Surface water · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile above the new 10 ppb action level (LCRI, effective Nov 1, 2027); Lead 90th percentile below the action level (2023).
A

City of Derby

Serves 25,413 people · Surface water · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
A

City of Liberal

Serves 19,640 people · Groundwater · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

Kansas City Board of Public Utilities

Serves 152,960 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A

University of Kansas

Serves 35,000 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; 1 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A

City of Atchison

Serves 10,694 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; 1 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A

Miami Co Rwd 2

Serves 10,311 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A

City of Topeka

Serves 125,963 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A

City of Pittsburg

Serves 20,738 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A

WaterOne (Water District No. 1 of Johnson County)

Serves 490,000 people · Surface water · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A

City of Wichita Water Utilities

Serves 395,699 people · Surface water · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
A

City of Lawrence

Serves 95,256 people · Surface water · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A

City of Manhattan

Serves 54,763 people · Groundwater · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).

Cities

AbbyvilleAbileneAdaAdmireAgendaAgraAlbertAlexanderAllenAlmaAlmenaAlta VistaAltamontAltonAltoonaAmericusAndaleAndoverAnthonyArcadiaArgoniaArkansas CityArlingtonArmaArnoldAshlandAssariaAtchisonAtholAtlantaAtticaAtwoodAuburnAugustaAuroraAxtellBaileyvilleBaldwinBaldwin CityBarnardBarnesBartlettBasehorBaxter SpringsBazineBeattieBeaumontBel AireBelle PlaineBellevilleBeloitBelpreBelvueBendenaBenedictBenningtonBentleyBentonBernBerrytonBeverlyBird CityBisonBlue MoundBlue RapidsBluff CityBogueBonner SpringsBremenBrewsterBronsonBrookvilleBrownellBucklinBucyrusBuffaloBuhlerBunker HillBurdenBurdettBurlingameBurlingtonBurnsBurr OakBurrtonBushtonCaldwellCambridgeCaneyCantonCarbondaleCarltonCassodayCawker CityCedarCedar PointCedar ValeCentervilleCentraliaChanuteChapmanChaseChautauquaCheneyCherokeeCherryvaleChetopaCimarronCirclevilleClaflinClay CenterClaytonClearview CityClearwaterCliftonClydeCoatsCodellCoffeyvileCoffeyvilleColbyColdwaterCollyerColonyColumbusColwichConcordiaConway SpringsCoolidgeCopelandCorningCottonwood FallsCouncil GroveCourtlandCrestlineCubaCullisonCulverCummingsCunninghamDamarDanvilleDe SotoDearingDeerfieldDeliaDelphosDenisonDennisDentonDerbyDesotoDexterDightonDodge CityDorranceDouglassDownsDrexelDurhamDwightEastonEdgertonEdnaEffinghamEl DoradoElbingElginElk CityElk FallsElkhartEllinwoodEllisEllsworthElmdaleElwoodEmmettEmporiaEnglewoodEnsignEnterpriseErieEsbonEskridgeEudoraEurekaEverestFairviewFall RiverFalunFarlingtonFlorenceFontanaFordFormosoFort DodgeFort LeavenworthFort RileyFort ScottFowlerFrankfortFranklinFredoniaFreeportFrontenacFultonGalenaGalesburgGalvaGarden CityGarden PlainGardnerGarlandGarnettGasGas CityGaylordGeneseoGeuda SpringsGirardGladeGlascoGlen ElderGoddardGoesselGoffGoodlandGorhamGoveGrainfieldGrandview PlazaGrantvilleGreat BendGreeleyGreenGreenleafGreensburgGreenwichGrenolaGridleyGrinnellGypsumHaddamHalsteadHamiltonHanoverHanstonHardtnerHarperHartfordHarveyvilleHavanaHavenHavensvilleHavilandHaysHaysvilleHazeltonHealyHeplerHeringtonHerndonHesstonHiawathaHighlandHill CityHillsboroHillsdaleHoisingtonHolcombHoltonHolyroodHomeHopeHoraceHortonHowardHoxieHoytHugotonHumboldtHunterHutchinsonIndependenceIngallsInmanIolaIsabelIukaJamestownJenningsJetmoreJewellJohnsonJohnson CityJunction CityKanopolisKanoradoKansas CityKechiKendallKensingtonKincaidKingmanKinsleyKiowaKirwinKismetLa CrosseLa HarpeLacrosseLacygneLaharpeLake CityLakinLancasterLaneLansingLarnedLathamLawrenceLe RoyLeavenworthLeawoodLebanonLeboLecomptonLehighLenexaLenoraLeonLeonardvilleLeotiLeroyLewisLiberalLibertyLiebenthalLincolnLindsborgLinnLinn ValleyLinwoodLittle RiverLoganLong IslandLongfordLongtonLorraineLouisburgLucasLurayLyndonLyonsMacksvilleMadisonMahaskaMaizeManchesterManhattanMankatoManterMaple HillMapletonMarionMarquetteMarysvilleMatfield GreenMayettaMayfieldMc CrackenMc CuneMc DonaldMc FarlandMc LouthMcconnell AfbMcCrackenMcCuneMcDonaldMcFarlandMcLouthMcPhersonMeadeMedicine LodgeMelvernMeridenMilfordMiltonvaleMinneapolisMinneolaMissionMolineMontezumaMoranMorganvilleMorlandMorrillMorrowvilleMoscowMound CityMound ValleyMoundridgeMount HopeMulberryMullinvilleMulvaneMundenMunjorMurdockMuscotahNarkaNatomaNealNeodeshaNeosho FallsNeosho RapidsNess CityNetawakaNew AlmeloNew CambriaNew CenturyNew StrawnNewtonNickersonNiotazeNorcaturNorth NewtonNortonNortonvilleNorwichOakleyOberlinOfferleOgdenOketoOlatheOlmitzOlpeOlsburgOnagaOneidaOpolisOsage CityOsawatomieOsborneOskaloosaOswegoOtisOttawaOverbrookOverland ParkOxfordOzawkiePalcoPalmerPaolaParadiseParkPark CityParkerParsonsPartridgePawnee RockPaxicoPeabodyPeckPerryPeruPhillipsburgPiquaPittsburgPlainsPlainvillePleasantonPomonaPortisPotwinPowhattanPrairie ViewPrairie VillagePrattPrescottPrestonPretty PrairiePrincetonProtectionQuenemoQuinterRandallRandolphRansomRantoulRaymondReadingRedfieldRepublicReserveRexfordRichmondRileyRivertonRobinsonRockRollaRosaliaRose HillRoselandRossvilleRoxburyRozelRush CenterRussellSabethaSaint FrancisSaint GeorgeSaint MarysSaint PaulSalinaSatantaSavonburgSawyerScammonScandiaSchoenchenScott CityScottsvilleScrantonSedanSedgwickSeldenSenecaSeveranceSeverySharonSharon SpringsShawneeSilver LakeSimpsonSmith CenterSmolanSoldierSolomonSouth HavenSouth HutchinsonSpearvilleSpeedSpiveySpring HillSt FrancisSt GeorgeSt JohnSt MarysSt PaulStaffordStarkSterlingStilwellStocktonStrong CitySubletteSummerfieldSun CitySusankSycamoreSylvan GroveSylviaSyracuseTalmageTampaTecumsehTescottThayerTimkenTiptonTonganoxieTopekaTorontoTowandaTribuneTroyTuronTyroUdallUlyssesUniontownUticaValley CenterValley FallsVassarVermillionVictoriaViolaVirgilWakarusaWakeeneyWakefieldWaldoWalkerWallaceWalnutWaltonWamegoWashingtonWatervilleWathenaWaverlyWebberWeirWeldaWellingtonWellsvilleWeskanWest MineralWestmorelandWestphaliaWetmoreWhite CityWhite CloudWhitewaterWhitingWichitaWilliamsburgWillisWilseyWilsonWinchesterWindomWinfieldWinonaWoodbineWoodstonYates CenterYoderZenda