Iowa: drinking water & radon

Iowa has 1,081 active community water systems. Since 2016, 106 reported health-based violations; 4 had a latest lead result above 15 ppb; 7 measured PFOA or PFOS at or above 4 ppt.

Radon zones in Iowa

tap a county

Zone 1 · highestZone 2 · moderateZone 3 · low

All ZIP codes in Iowa

1,042 ZIP codes.

50001Ackworth50002Adair50003Adel50005Albion50006Alden50007Alleman50008Allerton50009Altoona50010Ames50012Ames50013Ames50014Ames50020Anita50021Ankeny50022Atlantic50023Ankeny50025Audubon50026Bagley50027Barnes City50028Baxter50029Bayard50031Beaver50032Berwick50034Blairsburg50035Bondurant50036Boone50037Boone50038Booneville50039Bouton50040Boxholm50042Brayton50043Buckeye50044Bussey50046Cambridge50047Carlisle50048Casey50049Chariton50050Churdan50051Clemons50052Clio50054Colfax50055Collins50056Colo50057Columbia50058Coon Rapids50060Corydon50061Cumming50062Melcher Dallas50063Dallas Center50064Dana50065Davis City50066Dawson50067Decatur50068Derby50069De Soto50070Dexter50071Dows50072Earlham50073Elkhart50074Ellston50075Ellsworth50076Exira50078Ferguson50099Boone50101Galt50102Garden City50103Garden Grove50104Gibson50105Gilbert50106Gilman50107Grand Junction50108Grand River50109Granger50110Gray50111Grimes50112Grinnell50115Guthrie Center50116Hamilton50117Hamlin50118Hartford50119Harvey50120Haverhill50122Hubbard50123Humeston50124Huxley50125Indianola50126Iowa Falls50127Ira50128Jamaica50129Jefferson50130Jewell50131Johnston50132Kamrar50133Kellerton50134Kelley50135Kellogg50136Keswick50137Killduff50138Knoxville50139Lacona50140Lamoni50141Laurel50142Le Grand50143Leighton50144Leon50145Liberty Center50146Linden50147Lineville50148Liscomb50149Lorimor50150Lovilia50151Lucas50152Luther50153Lynnville50154Mc Callsburg50155Macksburg50156Madrid50157Malcom50158Marshalltown50160Martensdale50161Maxwell50162Melbourne50163Melcher Dallas50164Menlo50165Millerton50166Milo50167Minburn50168Mingo50169Mitchellville50170Monroe50171Montezuma50173Montour50174Murray50201Nevada50206New Providence50207New Sharon50208Newton50210New Virginia50211Norwalk50212Ogden50213Osceola50214Otley50216Panora50217Paton50218Patterson50219Pella50220Perry50222Peru50223Pilot Mound50225Pleasantville50226Polk City50227Popejoy50228Prairie City50229Prole50230Radcliffe50231Randall50232Reasnor50233Redfield50234Rhodes50235Rippey50236Roland50237Runnells50238Russell50239Saint Anthony50240Saint Charles50241Saint Marys50242Searsboro50243Sheldahl50244Slater50246Stanhope50247State Center50248Story City50249Stratford50250Stuart50251Sully50252Swan50254Thayer50255Thornburg50256Tracy50257Truro50258Union50261Van Meter50262Van Wert50263Waukee50264Weldon50265West Des Moines50266West Des Moines50268What Cheer50269Whitten50271Williams50272Williamson50273Winterset50274Wiota50275Woodburn50276Woodward50277Yale50278Zearing50301Des Moines50302Des Moines50303Des Moines50304Des Moines50305Des Moines50306Des Moines50307Des Moines50308Des Moines50309Des Moines50310Des Moines50311Des Moines50312Des Moines50313Des Moines50314Des Moines50315Des Moines50316Des Moines50317Des Moines50318Des Moines50319Des Moines50320Des Moines50321Des Moines50322Urbandale50323Urbandale50324Windsor Heights50325Clive50327Pleasant Hill50328Des Moines50329Des Moines50330Des Moines50331Des Moines50332Des Moines50333Des Moines50334Des Moines50335Des Moines50336Des Moines50339Des Moines50340Des Moines50359Des Moines50360Des Moines50361Des Moines50362Des Moines50363Des Moines50364Des Moines50367Des Moines50368Des Moines50369Des Moines50380Des Moines50381Des Moines50391Des Moines50392Des Moines50393Des Moines50394Des Moines50395Des Moines50396Des Moines50398Urbandale50401Mason City50402Mason City50420Alexander50421Belmond50423Britt50424Buffalo Center50426Carpenter50428Clear Lake50430Corwith50431Coulter50432Crystal Lake50433Dougherty50434Fertile50435Floyd50436Forest City50438Garner50439Goodell50440Grafton50441Hampton50444Hanlontown50446Joice50447Kanawha50448Kensett50449Klemme50450Lake Mills50451Lakota50452Latimer50453Leland50454Little Cedar50455Mc Intire50456Manly50457Meservey50458Nora Springs50459Northwood50460Orchard50461Osage50464Plymouth50465Rake50466Riceville50467Rock Falls50468Rockford50469Rockwell50470Rowan50471Rudd50472Saint Ansgar50473Scarville50475Sheffield50476Stacyville50477Swaledale50478Thompson50479Thornton50480Titonka50482Ventura50483Wesley50484Woden50501Fort Dodge50510Albert City50511Algona50514Armstrong50515Ayrshire50516Badger50517Bancroft50518Barnum50519Bode50520Bradgate50521Burnside50522Burt50523Callender50524Clare50525Clarion50526Clarion50527Curlew50528Cylinder50529Dakota City50530Dayton50531Dolliver50532Duncombe50533Eagle Grove50535Early50536Emmetsburg50538Farnhamville50539Fenton50540Fonda50541Gilmore City50542Goldfield50543Gowrie50544Harcourt50545Hardy50546Havelock50548Humboldt50551Jolley50552Knierim50554Laurens50556Ledyard50557Lehigh50558Livermore50559Lone Rock50560Lu Verne50561Lytton50562Mallard50563Manson50565Marathon50566Moorland50567Nemaha50568Newell50569Otho50570Ottosen50571Palmer50573Plover50574Pocahontas50575Pomeroy50576Rembrandt50577Renwick50578Ringsted50579Rockwell City50581Rolfe50582Rutland50583Sac City50585Sioux Rapids50586Somers50588Storm Lake50590Swea City50591Thor50592Truesdale50593Varina50594Vincent50595Webster City50597West Bend50598Whittemore50599Woolstock50601Ackley50602Allison50603Alta Vista50604Aplington50605Aredale50606Arlington50607Aurora50608Austinville50609Beaman50611Bristow50612Buckingham50613Cedar Falls50616Charles City50619Clarksville50620Colwell50621Conrad50622Denver50623Dewar50624Dike50625Dumont50626Dunkerton50627Eldora50628Elma50629Fairbank50630Fredericksburg50631Frederika50632Garwin50633Geneva50634Gilbertville50635Gladbrook50636Greene50638Grundy Center50641Hazleton50642Holland50643Hudson50644Independence50645Ionia50647Janesville50648Jesup50650Lamont50651La Porte City50652Lincoln50653Marble Rock50654Masonville50655Maynard50657Morrison50658Nashua50659New Hampton50660New Hartford50661North Washington50662Oelwein50664Oran50665Parkersburg50666Plainfield50667Raymond50668Readlyn50669Reinbeck50670Shell Rock50671Stanley50672Steamboat Rock50673Stout50674Sumner50675Traer50676Tripoli50677Waverly50680Wellsburg50681Westgate50682Winthrop50701Waterloo50702Waterloo50703Waterloo50704Waterloo50707Evansdale50801Creston50830Afton50831Arispe50833Bedford50835Benton50836Blockton50837Bridgewater50839Carbon50840Clearfield50841Corning50842Cromwell50843Cumberland50845Diagonal50846Fontanelle50847Grant50848Gravity50849Greenfield50851Lenox50853Massena50854Mount Ayr50857Nodaway50858Orient50859Prescott50860Redding50861Shannon City50862Sharpsburg50863Tingley50864Villisca50936Des Moines50940Des Moines50947Des Moines50950Des Moines50980Des Moines50981Des Moines50982Des Moines50983Des Moines51001Akron51002Alta51003Alton51004Anthon51005Aurelia51006Battle Creek51007Bronson51008Brunsville51009Calumet51010Castana51012Cherokee51014Cleghorn51015Climbing Hill51016Correctionville51018Cushing51019Danbury51020Galva51022Granville51023Hawarden51024Hinton51025Holstein51026Hornick51027Ireton51028Kingsley51029Larrabee51030Lawton51031Le Mars51033Linn Grove51034Mapleton51035Marcus51036Maurice51037Meriden51038Merrill51039Moville51040Onawa51041Orange City51044Oto51046Paullina51047Peterson51048Pierson51049Quimby51050Remsen51051Rodney51052Salix51053Schaller51054Sergeant Bluff51055Sloan51056Smithland51058Sutherland51060Ute51061Washta51062Westfield51063Whiting51101Sioux City51102Sioux City51103Sioux City51104Sioux City51105Sioux City51106Sioux City51108Sioux City51109Sioux City51111Sioux City51201Sheldon51230Alvord51231Archer51232Ashton51234Boyden51235Doon51237George51238Hospers51239Hull51240Inwood51241Larchwood51242Lester51243Little Rock51244Matlock51245Primghar51246Rock Rapids51247Rock Valley51248Sanborn51249Sibley51250Sioux Center51301Spencer51331Arnolds Park51333Dickens51334Estherville51338Everly51340Fostoria51341Gillett Grove51342Graettinger51343Greenville51345Harris51346Hartley51347Lake Park51350Melvin51351Milford51354Ocheyedan51355Okoboji51357Royal51358Ruthven51360Spirit Lake51363Superior51364Terril51365Wallingford51366Webb51401Carroll51430Arcadia51431Arthur51432Aspinwall51433Auburn51436Breda51439Charter Oak51440Dedham51441Deloit51442Denison51443Glidden51444Halbur51445Ida Grove51446Irwin51447Kirkman51448Kiron51449Lake City51450Lake View51451Lanesboro51452Lidderdale51453Lohrville51454Manilla51455Manning51458Odebolt51459Ralston51460Ricketts51461Schleswig51462Scranton51463Templeton51465Vail51466Wall Lake51467Westside51501Council Bluffs51502Council Bluffs51503Council Bluffs51510Carter Lake51520Arion51521Avoca51523Blencoe51525Carson51526Crescent51527Defiance51528Dow City51529Dunlap51530Earling51531Elk Horn51532Elliott51533Emerson51534Glenwood51535Griswold51536Hancock51537Harlan51540Hastings51541Henderson51542Honey Creek51543Kimballton51544Lewis51545Little Sioux51546Logan51548Mc Clelland51549Macedonia51550Magnolia51551Malvern51552Marne51553Minden51554Mineola51555Missouri Valley51556Modale51557Mondamin51558Moorhead51559Neola51560Oakland51561Pacific Junction51562Panama51563Persia51564Pisgah51565Portsmouth51566Red Oak51570Shelby51571Silver City51572Soldier51573Stanton51575Treynor51576Underwood51577Walnut51579Woodbine51591Red Oak51593Harlan51601Shenandoah51603Shenandoah51630Blanchard51631Braddyville51632Clarinda51636Coin51637College Springs51638Essex51639Farragut51640Hamburg51645Imogene51646New Market51647Northboro51648Percival51649Randolph51650Riverton51651Shambaugh51652Sidney51653Tabor51654Thurman51656Yorktown52001Dubuque52002Dubuque52003Dubuque52004Dubuque52030Andrew52031Bellevue52032Bernard52033Cascade52035Colesburg52036Delaware52037Delmar52038Dundee52039Durango52040Dyersville52041Earlville52042Edgewood52043Elkader52044Elkport52045Epworth52046Farley52047Farmersburg52048Garber52049Garnavillo52050Greeley52052Guttenberg52053Holy Cross52054La Motte52056Luxemburg52057Manchester52060Maquoketa52064Miles52065New Vienna52066North Buena Vista52068Peosta52069Preston52070Sabula52071Saint Donatus52072Saint Olaf52073Sherrill52074Spragueville52075Springbrook52076Strawberry Point52077Volga52078Worthington52079Zwingle52099Dubuque52101Decorah52132Calmar52133Castalia52134Chester52135Clermont52136Cresco52140Dorchester52141Elgin52142Fayette52144Fort Atkinson52146Harpers Ferry52147Hawkeye52149Highlandville52151Lansing52154Lawler52155Lime Springs52156Luana52157Mc Gregor52158Marquette52159Monona52160New Albin52161Ossian52162Postville52163Protivin52164Randalia52165Ridgeway52166Saint Lucas52168Spillville52169Wadena52170Waterville52171Waucoma52172Waukon52175West Union52201Ainsworth52202Alburnett52203Amana52204Amana52205Anamosa52206Atkins52207Baldwin52208Belle Plaine52209Blairstown52210Brandon52211Brooklyn52212Center Junction52213Center Point52214Central City52215Chelsea52216Clarence52217Clutier52218Coggon52219Prairieburg52220Conroy52221Guernsey52222Deep River52223Delhi52224Dysart52225Elberon52227Ely52228Fairfax52229Garrison52231Harper52232Hartwick52233Hiawatha52235Hills52236Homestead52237Hopkinton52240Iowa City52241Coralville52242Iowa City52243Iowa City52244Iowa City52245Iowa City52246Iowa City52247Kalona52248Keota52249Keystone52251Ladora52252Langworthy52253Lisbon52254Lost Nation52255Lowden52257Luzerne52301Marengo52302Marion52305Martelle52306Mechanicsville52307Middle Amana52308Millersburg52309Monmouth52310Monticello52313Mount Auburn52314Mount Vernon52315Newhall52316North English52317North Liberty52318Norway52320Olin52321Onslow52322Oxford52323Oxford Junction52324Palo52325Parnell52326Quasqueton52327Riverside52328Robins52329Rowley52330Ryan52332Shellsburg52333Solon52334South Amana52335South English52336Springville52337Stanwood52338Swisher52339Tama52340Tiffin52341Toddville52342Toledo52344Troy Mills52345Urbana52346Van Horne52347Victor52348Vining52349Vinton52351Walford52352Walker52353Washington52354Watkins52355Webster52356Wellman52358West Branch52359West Chester52361Williamsburg52362Wyoming52401Cedar Rapids52402Cedar Rapids52403Cedar Rapids52404Cedar Rapids52405Cedar Rapids52406Cedar Rapids52407Cedar Rapids52408Cedar Rapids52409Cedar Rapids52410Cedar Rapids52411Cedar Rapids52497Cedar Rapids52498Cedar Rapids52499Cedar Rapids52501Ottumwa52530Agency52531Albia52533Batavia52534Beacon52535Birmingham52536Blakesburg52537Bloomfield52540Brighton52542Cantril52543Cedar52544Centerville52548Chillicothe52549Cincinnati52550Delta52551Douds52552Drakesville52553Eddyville52554Eldon52555Exline52556Fairfield52557Fairfield52560Floris52561Fremont52562Hayesville52563Hedrick52565Keosauqua52566Kirkville52567Libertyville52568Martinsburg52569Melrose52570Milton52571Moravia52572Moulton52573Mount Sterling52574Mystic52576Ollie52577Oskaloosa52580Packwood52581Plano52583Promise City52584Pulaski52585Richland52586Rose Hill52588Selma52590Seymour52591Sigourney52593Udell52594Unionville52595University Park52601Burlington52619Argyle52620Bonaparte52621Crawfordsville52623Danville52624Denmark52625Donnellson52626Farmington52627Fort Madison52630Hillsboro52631Houghton52632Keokuk52635Lockridge52637Mediapolis52638Middletown52639Montrose52640Morning Sun52641Mount Pleasant52642Rome52644Mount Union52645New London52646Oakville52647Olds52648Pilot Grove52649Salem52650Sperry52651Stockport52652Swedesburg52653Wapello52654Wayland52655West Burlington52656West Point52657Saint Paul52658Wever52659Winfield52660Yarmouth52701Andover52720Atalissa52721Bennett52722Bettendorf52726Blue Grass52727Bryant52728Buffalo52729Calamus52730Camanche52731Charlotte52732Clinton52733Clinton52734Clinton52736Clinton52737Columbus City52738Columbus Junction52739Conesville52742De Witt52745Dixon52746Donahue52747Durant52748Eldridge52749Fruitland52750Goose Lake52751Grand Mound52752Grandview52753Le Claire52754Letts52755Lone Tree52756Long Grove52757Low Moor52758Mc Causland52759Montpelier52760Moscow52761Muscatine52765New Liberty52766Nichols52767Pleasant Valley52768Princeton52769Stockton52771Teeds Grove52772Tipton52773Walcott52774Welton52776West Liberty52777Wheatland52778Wilton52801Davenport52802Davenport52803Davenport52804Davenport52805Davenport52806Davenport52807Davenport52808Davenport52809Davenport

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 Iowa have violations?

106 of 1,081 active community water systems in Iowa reported at least one health-based violation since 2016 (EPA SDWIS).

What is the radon risk in Iowa?

1,042 ZIP codes are in EPA radon zone 1 (highest potential), 0 in zone 2 and 0 in zone 3. EPA recommends testing every home.