EPA data as of Oct 2026 · page updated 2026-10-30

Kansas: drinking water & radon

Kansas has 853 active community water systems. Since 2016, 294 reported health-based violations; 2 had a latest lead result above 15 ppb; 6 measured PFOA or PFOS at or above 4 ppt.

Water systems853
With violations294
Radon zone 1 ZIPs390
ZIPs likely on wells133

Radon zones in Kansas

tap a county
Zone 1 · highestZone 2 · moderateZone 3 · low

Most health-based violations

Kickapoo Tribal Waterworks
520 people		79
City of Severy
200 people		60
City of ELK City
292 people		50
City of Ford
204 people		35
City of Sylvia
210 people		35
City of Beloit
3,407 people		33
Mitchell Co RWD 2
873 people		28
Mitchell Co RWD 3
2,048 people		28
Mitchell Co RWD 1
345 people		27
City of Randall
80 people		26

Highest latest lead (90th percentile)

Jefferson Co RWD 11
483 people		48.1 ppb
Wilson Co RWD 4
293 people		15.4 ppb
City of Madison
682 people		15 ppb
City of Palco
210 people		14 ppb
City of Minneola
752 people		13.6 ppb
City of Belpre
98 people		13.4 ppb
M and M Mobile Home Court
46 people		12.5 ppb
Linn Co RWD 1
1,200 people		12 ppb
City of Cullison
83 people		11.3 ppb
City of Olathe
143,014 people		11 ppb

Highest PFOA / PFOS

Frusi Water Treatment Plant
35,784 people		21.1 ppt
City of Great Bend
14,580 people		11 ppt
City of Dodge City
27,104 people		6.8 ppt
City of Park City
8,503 people		4.5 ppt
City of Arkansas City
11,929 people		4.4 ppt
City of Pratt
6,573 people		4.1 ppt

Largest systems

Water District 1 of Johnson Co
490,000 people		490,000
City of Wichita
395,699 people		395,699
Kansas City Board of Public Utilities
152,960 people		152,960
City of Olathe
143,014 people		143,014
City of Topeka
125,963 people		125,963
City of Lawrence
95,256 people		95,256
City of Manhattan
54,763 people		54,763
City of Salina
46,481 people		46,481
City of Hutchinson
39,712 people		39,712
Leavenworth Water Department
38,757 people		38,757

All ZIP codes in Kansas

741 ZIP codes.

66002Atchison66006Baldwin City66007Basehor66008Bendena66010Blue Mound66012Bonner Springs66013Bucyrus66014Centerville66015Colony66016Cummings66017Denton66018De Soto66020Easton66021Edgerton66023Effingham66024Elwood66025Eudora66026Fontana66027Fort Leavenworth66030Gardner66031New Century66032Garnett66033Greeley66035Highland66036Hillsdale66039Kincaid66040Lacygne66041Lancaster66042Lane66043Lansing66044Lawrence66045Lawrence66046Lawrence66047Lawrence66048Leavenworth66049Lawrence66050Lecompton66051Olathe66052Linwood66053Louisburg66054Mc Louth66056Mound City66058Muscotah66060Nortonville66061Olathe66062Olathe66063Olathe66064Osawatomie66066Oskaloosa66067Ottawa66070Ozawkie66071Paola66072Parker66073Perry66075Pleasanton66076Pomona66078Princeton66079Rantoul66080Richmond66083Spring Hill66085Stilwell66086Tonganoxie66087Troy66088Valley Falls66090Wathena66091Welda66092Wellsville66093Westphalia66094White Cloud66095Williamsburg66097Winchester66101Kansas City66102Kansas City66103Kansas City66104Kansas City66105Kansas City66106Kansas City66109Kansas City66110Kansas City66111Kansas City66112Kansas City66115Kansas City66117Kansas City66118Kansas City66119Kansas City66201Mission66202Mission66203Shawnee66204Overland Park66205Mission66206Leawood66207Overland Park66208Prairie Village66209Leawood66210Overland Park66211Leawood66212Overland Park66213Overland Park66214Overland Park66215Lenexa66216Shawnee66217Shawnee66218Shawnee66219Lenexa66220Lenexa66221Overland Park66222Mission66223Overland Park66224Overland Park66225Overland Park66226Shawnee66227Lenexa66250Lenexa66251Overland Park66276Shawnee Mission66282Overland Park66283Overland Park66285Lenexa66286Shawnee66401Alma66402Auburn66403Axtell66404Baileyville66406Beattie66407Belvue66408Bern66409Berryton66411Blue Rapids66412Bremen66413Burlingame66414Carbondale66415Centralia66416Circleville66417Corning66418Delia66419Denison66420Dover66422Emmett66423Eskridge66424Everest66425Fairview66426Fostoria66427Frankfort66428Goff66429Grantville66431Harveyville66432Havensville66434Hiawatha66436Holton66438Home66439Horton66440Hoyt66441Junction City66442Fort Riley66449Leonardville66451Lyndon66501Mc Farland66502Manhattan66503Manhattan66505Manhattan66506Manhattan66507Maple Hill66508Marysville66509Mayetta66510Melvern66512Meriden66514Milford66515Morrill66516Netawaka66517Ogden66518Oketo66520Olsburg66521Onaga66522Oneida66523Osage City66524Overbrook66526Paxico66527Powhattan66528Quenemo66531Riley66532Robinson66533Rossville66534Sabetha66535Saint George66536Saint Marys66537Scranton66538Seneca66539Silver Lake66540Soldier66541Summerfield66542Tecumseh66543Vassar66544Vermillion66546Wakarusa66547Wamego66548Waterville66549Westmoreland66550Wetmore66552Whiting66554Randolph66601Topeka66603Topeka66604Topeka66605Topeka66606Topeka66607Topeka66608Topeka66609Topeka66610Topeka66611Topeka66612Topeka66614Topeka66615Topeka66616Topeka66617Topeka66618Topeka66619Topeka66620Topeka66621Topeka66622Topeka66624Topeka66625Topeka66626Topeka66629Topeka66630Topeka66636Topeka66647Topeka66667Topeka66675Topeka66683Topeka66699Topeka66701Fort Scott66710Altoona66711Arcadia66712Arma66713Baxter Springs66714Benedict66716Bronson66717Buffalo66720Chanute66724Cherokee66725Columbus66732Elsmore66733Erie66734Farlington66735Franklin66736Fredonia66738Fulton66739Galena66740Galesburg66741Garland66742Gas66743Girard66746Hepler66748Humboldt66749Iola66751La Harpe66753Mc Cune66754Mapleton66755Moran66756Mulberry66757Neodesha66758Neosho Falls66760Opolis66761Piqua66762Pittsburg66763Frontenac66767Prescott66769Redfield66770Riverton66771Saint Paul66772Savonburg66773Scammon66775Stark66776Thayer66777Toronto66778Treece66779Uniontown66780Walnut66781Weir66782West Mineral66783Yates Center66801Emporia66830Admire66833Allen66834Alta Vista66835Americus66838Burdick66839Burlington66840Burns66842Cassoday66843Cedar Point66845Cottonwood Falls66846Council Grove66849Dwight66850Elmdale66851Florence66852Gridley66853Hamilton66854Hartford66855Lamont66856Lebo66857Le Roy66858Lincolnville66859Lost Springs66860Madison66861Marion66862Matfield Green66863Neal66864Neosho Rapids66865Olpe66866Peabody66868Reading66869Strong City66870Virgil66871Waverly66872White City66873Wilsey66901Concordia66930Agenda66932Athol66933Barnes66935Belleville66936Burr Oak66937Clifton66938Clyde66939Courtland66940Cuba66941Esbon66942Formoso66943Greenleaf66944Haddam66945Hanover66946Hollenberg66948Jamestown66949Jewell66951Kensington66952Lebanon66953Linn66955Mahaska66956Mankato66958Morrowville66959Munden66960Narka66961Norway66962Palmer66963Randall66964Republic66966Scandia66967Smith Center66968Washington66970Webber67001Andale67002Andover67003Anthony67004Argonia67005Arkansas City67008Atlanta67009Attica67010Augusta67012Beaumont67013Belle Plaine67016Bentley67017Benton67018Bluff City67019Burden67020Burrton67021Byers67022Caldwell67023Cambridge67024Cedar Vale67025Cheney67026Clearwater67028Coats67029Coldwater67030Colwich67031Conway Springs67035Cunningham67036Danville67037Derby67038Dexter67039Douglass67042El Dorado67045Eureka67047Fall River67049Freeport67050Garden Plain67051Geuda Springs67052Goddard67053Goessel67054Greensburg67055Greenwich67056Halstead67057Hardtner67058Harper67059Haviland67060Haysville67061Hazelton67062Hesston67063Hillsboro67065Isabel67066Iuka67067Kechi67068Kingman67070Kiowa67071Lake City67072Latham67073Lehigh67074Leon67101Maize67102Maple City67103Mayfield67104Medicine Lodge67105Milan67106Milton67107Moundridge67108Mount Hope67109Mullinville67110Mulvane67111Murdock67112Nashville67114Newton67117North Newton67118Norwich67119Oxford67120Peck67122Piedmont67123Potwin67124Pratt67127Protection67131Rock67132Rosalia67133Rose Hill67134Sawyer67135Sedgwick67137Severy67138Sharon67140South Haven67142Spivey67143Sun City67144Towanda67146Udall67147Valley Center67149Viola67150Waldron67151Walton67152Wellington67154Whitewater67155Wilmore67156Winfield67159Zenda67201Wichita67202Wichita67203Wichita67204Wichita67205Wichita67206Wichita67207Wichita67208Wichita67209Wichita67210Wichita67211Wichita67212Wichita67213Wichita67214Wichita67215Wichita67216Wichita67217Wichita67218Wichita67219Wichita67220Wichita67221Mcconnell Afb67223Wichita67226Wichita67227Wichita67228Wichita67230Wichita67232Wichita67235Wichita67260Wichita67275Wichita67276Wichita67277Wichita67278Wichita67301Independence67330Altamont67332Bartlett67333Caney67334Chautauqua67335Cherryvale67336Chetopa67337Coffeyville67340Dearing67341Dennis67342Edna67344Elk City67345Elk Falls67346Grenola67347Havana67349Howard67351Liberty67352Longton67353Moline67354Mound Valley67355Niotaze67356Oswego67357Parsons67360Peru67361Sedan67363Sycamore67364Tyro67401Salina67402Salina67410Abilene67416Assaria67417Aurora67418Barnard67420Beloit67422Bennington67423Beverly67425Brookville67427Bushton67428Canton67430Cawker City67431Chapman67432Clay Center67436Delphos67437Downs67438Durham67439Ellsworth67441Enterprise67442Falun67443Galva67444Geneseo67445Glasco67446Glen Elder67447Green67448Gypsum67449Herington67450Holyrood67451Hope67452Hunter67454Kanopolis67455Lincoln67456Lindsborg67457Little River67458Longford67459Lorraine67460Mcpherson67464Marquette67466Miltonvale67467Minneapolis67468Morganville67470New Cambria67473Osborne67474Portis67475Ramona67476Roxbury67478Simpson67480Solomon67481Sylvan Grove67482Talmage67483Tampa67484Tescott67485Tipton67487Wakefield67490Wilson67491Windom67492Woodbine67501Hutchinson67502Hutchinson67504Hutchinson67505South Hutchinson67510Abbyville67511Albert67512Alden67513Alexander67514Arlington67515Arnold67516Bazine67518Beeler67519Belpre67520Bison67521Brownell67522Buhler67523Burdett67524Chase67525Claflin67526Ellinwood67529Garfield67530Great Bend67543Haven67544Hoisington67545Hudson67546Inman67547Kinsley67548La Crosse67550Larned67552Lewis67554Lyons67556Mc Cracken67557Macksville67559Nekoma67560Ness City67561Nickerson67563Offerle67564Olmitz67565Otis67566Partridge67567Pawnee Rock67568Plevna67570Pretty Prairie67572Ransom67573Raymond67574Rozel67575Rush Center67576St John67578Stafford67579Sterling67581Sylvia67583Turon67584Utica67585Yoder67601Hays67621Agra67622Almena67623Alton67625Bogue67626Bunker Hill67627Catharine67628Cedar67629Clayton67631Collyer67632Damar67634Dorrance67635Dresden67637Ellis67638Gaylord67639Glade67640Gorham67642Hill City67643Jennings67644Kirwin67645Lenora67646Logan67647Long Island67648Lucas67649Luray67650Morland67651Natoma67653Norcatur67654Norton67656Ogallah67657Palco67658Paradise67659Penokee67660Pfeifer67661Phillipsburg67663Plainville67664Prairie View67665Russell67669Stockton67671Victoria67672Wakeeney67673Waldo67674Walker67675Woodston67701Colby67730Atwood67731Bird City67732Brewster67733Edson67734Gem67735Goodland67736Gove67737Grainfield67738Grinnell67739Herndon67740Hoxie67741Kanorado67743Levant67744Ludell67745Mc Donald67747Monument67748Oakley67749Oberlin67751Park67752Quinter67753Rexford67756Saint Francis67757Selden67758Sharon Springs67761Wallace67762Weskan67764Winona67801Dodge City67831Ashland67834Bucklin67835Cimarron67836Coolidge67837Copeland67838Deerfield67839Dighton67840Englewood67841Ensign67842Ford67843Fort Dodge67844Fowler67846Garden City67849Hanston67850Healy67851Holcomb67853Ingalls67854Jetmore67855Johnson67857Kendall67859Kismet67860Lakin67861Leoti67862Manter67863Marienthal67864Meade67865Minneola67867Montezuma67868Pierceville67869Plains67870Satanta67871Scott City67876Spearville67877Sublette67878Syracuse67879Tribune67880Ulysses67882Wright67901Liberal67905Liberal67950Elkhart67951Hugoton67952Moscow67953Richfield67954Rolla

What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.

Questions

How many water systems in Kansas have violations?

294 of 853 active community water systems in Kansas reported at least one health-based violation since 2016 (EPA SDWIS).

What is the radon risk in Kansas?

390 ZIP codes are in EPA radon zone 1 (highest potential), 351 in zone 2 and 0 in zone 3. EPA recommends testing every home.