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Kansas utilities with hard water.

121 to 180 mg/L (7.1 to 10.5 grains per gallon). 93 utilities serving 1.4 million people as they report it, largest first.

All 93, by people served

Kansas utilities with hard water, 1 to 93
UtilityBased inServesHardness, mg/LGrains per gallon
Water District 1 of Johnson CoKansas City490,0001408.2
City of WichitaWichita395,6991458.5
City of TopekaTopeka125,9631357.9
City of HutchinsonHutchinson39,7121307.6
Frusi Water Treatment PlantFort Riley35,7841559.1
City of GardnerGardner23,9421458.5
City of HaysHays21,0401609.4
City of PittsburgPittsburg20,7381307.6
City of Junction CityJunction City19,1671609.4
Fort Leavenworth American Water Ent LLCFort Leavenworth12,9341307.6
City of OttawaOttawa12,6041307.6
City of Arkansas CityArkansas City11,9291388
City of WinfieldWinfield11,7261307.6
Miami Co RWD 2Hillsdale10,3111408.2
City of ParsonsParsons9,4791257.3
City of ChanuteChanute8,6421307.6
City of IndependenceIndependence8,4641609.4
City of WellingtonWellington7,6641559.1
City of Valley CenterValley Center7,4191408.2
City of AbileneAbilene6,46817510.2
City of MaizeMaize6,06017510.2
Sedgwick Co RWD 3Derby6,0451408.2
City of OsawatomieOsawatomie4,2801709.9
Osage Co RWD 5Overbrook3,8751307.6
City of BeloitBeloit3,4071357.9
City of GarnettGarnett3,1921307.6
City of KingmanKingman3,06218010.5
City of Osage CityOsage City2,8091508.8
City of BurlingtonBurlington2,6411357.9
City of SabethaSabetha2,5191709.9
City of EurekaEureka2,2891609.4
City of NeodeshaNeodesha2,2461709.9
City of CheneyCheney2,1701307.6
Jefferson Co RWD 13Lawrence2,11517510.2
Anderson Co RWD 1cMound City2,1121408.2
City of Council GroveCouncil Grove2,1111307.6
City of MinneapolisMinneapolis1,9481709.9
City of CaneyCaney1,7561307.6
City of OswegoOswego1,6801408.2
City of Belle PlaineBelle Plaine1,46817510.2
Sumner Co RWD 5Conway Springs1,4291307.6
City of KinsleyKinsley1,4171709.9
City of St FrancisSt Francis1,2921357.9
City of AtwoodAtwood1,2821709.9
Linn Co RWD 1Lacygne1,2001408.2
Bourbon Co RWD 4Bronson1,1611609.4
Pottawatomie Co RWD 4Belvue1,1251307.6
City of LacygneLacygne1,1191709.9
City of Valley FallsValley Falls1,08618010.5
City of WashingtonWashington1,0651408.2
City of Linn ValleyLinn Valley1,0081559.1
City of SedanSedan1,0051307.6
City of OverbrookOverbrook9991337.7
Cherokee Co RWD 2Riverton9431709.9
Cherokee Co RWD 9Riverton9001508.8
City of AlmaAlma7991709.9
City of Sharon SpringsSharon Springs7441307.6
City of MadisonMadison6821508.8
City of ColdwaterColdwater6721357.9
City of ScrantonScranton6511609.4
City of St PaulSt Paul5971559.1
City of LecomptonLecompton5921307.6
City of HowardHoward5831559.1
City of WeirWeir5661508.8
City of ArgoniaArgonia4551609.4
Osage Co RWD 2Quenemo4401438.3
City of Bird CityBird City4371307.6
City of EskridgeEskridge4131709.9
City of MulberryMulberry4111257.3
City of GypsumGypsum4021458.5
Midwest Camps, LLCHalstead3401307.6
Barber Co RWD 2Kiowa2451538.9
City of Blue MoundBlue Mound2231408.2
City of MorrillMorrill2171609.4
City of PrescottPrescott2071307.6
City of WinonaWinona1841709.9
Montgomery Co RWD 1Independence1751307.6
City of FultonFulton1651408.2
City of LehighLehigh1591659.6
City of CubaCuba1391659.6
City of McDonaldMcDonald1161609.4
City of ViolaViola1151307.6
City of RaymondRaymond8518010.5
City of CullisonCullison831689.8
Hamilton Co RWD 1Kendall801709.9
City of MahaskaMahaska441357.9
Chisholm Creek Utility AuthorityPark City11709.9
Public Wholesale WSD 11Girard11307.6
Public Wholesale WSD 12Melvern11408.2
Public Wholesale WSD 13Lacygne11357.9
Public Wholesale WSD 18Holton118010.5
Public Wholesale WSD 19Columbus11307.6
Public Wholesale WSD 20Sedan11257.3

Source: Kansas Department of Health and Environment, Public Water Supply Section, 552 utilities, results from Jan. 5, 2015 to Sept. 2, 2026, read Oct. 18, 2026. Each sampling point is taken at its median; a figure is typical where every point falls in one band.

Bands are the U.S. Geological Survey’s, at 17.1 mg/L to the grain. People served is what each utility reports; where one sells water to another, the same people can be counted twice. How hardness is measured here.

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