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Getting your well water tested in Indiana

Indiana has free or low-cost well testing. Across the state, the ones worth testing for are manganese, arsenic and nitrate, plus bacteria every year.

Compare lab tests Find my county

About 1,478,000 people in Indiana get their water from a private well, about 2 in 10 residents.

Three ways to get tested, cheapest first.

2

A lab Indiana certifies

The state's list of labs certified for drinking water. Many sell bottles you pick up or get by mail, and their results count for a home sale or loan.

Labs certified by Indiana
3

A mail-in kit

Order online, fill the bottles at your kitchen tap and get results by email in about a week. Full well tests run about $210 to $220.

Compare kits for Indiana

Look up a well's drilling report in Indiana

What turns up in Indiana wells.

Share of tested wells over the limit, from lab tests the USGS, EPA and state agencies collected since 2000. Your own well needs its own test.

Tested wells over the limit, statewide
Manganese23%42 of 181Arsenic18%30 of 166Nitrate8%16 of 205Uranium0%0 of 145Radon0%0 of 49Lead0%0 of 144Fluoride0%0 of 162
GermsTest every year, whatever the chart says
Coliform bacteria13%3 of 23
StainsNot a health risk
Iron stains53%88 of 165

Rare: under 5%Worth checking: 5 to 15%Widespread: 15%+

Lab results: Water Quality Portal (USGS and EPA)

Where it shows up most

Find your county.

5 counties have a full report with local test results and well depths.

HancockJasperLakeMontgomeryWayne
Every county in Indiana: people on wells and typical depth
CountyPeople on private wellsShare of residentsTypical well depth
Elkhart County66,71432%62 ft
St. Joseph County52,95619%81 ft
Allen County45,41712%76 ft
Kosciusko County41,69552%79 ft
Porter County41,20424%62 ft
LaPorte County39,96036%68 ft
Madison County36,24728%80 ft
LaGrange County33,37283%82 ft
Delaware County31,24028%150 ft
Morgan County31,20343%209 ft
Tippecanoe County30,28016%135 ft
Lake County29,5186%60 ft
Vigo County25,72024%61 ft
Marshall County23,89852%92 ft
Noble County23,40249%100 ft
Howard County22,35727%168 ft
Hendricks County22,11013%108 ft
Harrison County20,42952%107 ft
Hancock County20,41426%100 ft
Hamilton County19,9496%181 ft
Grant County19,59129%149 ft
Whitley County19,39557%100 ft
Bartholomew County19,20123%93 ft
Jasper County19,18758%40 ft
Shelby County19,07342%75 ft
Henry County18,95939%118 ft
Wayne County18,73428%90 ft
Adams County18,70052%120 ft
Steuben County18,22853%71 ft
Starke County16,61371%110 ft
Johnson County16,41810%71 ft
Putnam County16,31844%163 ft
Montgomery County15,93742%90 ft
Cass County15,93242%104 ft
DeKalb County15,89337%89 ft
Owen County15,73774%120 ft
Dearborn County15,55131%50 ft
Washington County15,53855%105 ft
Miami County15,46943%103 ft
Lawrence County14,82433%145 ft
Franklin County14,62864%44 ft
Ripley County14,50650%42 ft
Posey County14,34657%135 ft
Jackson County14,33231%42 ft
Daviess County14,15942%191 ft
Carroll County13,44966%92 ft
Wells County13,10547%158 ft
Boone County13,02418%119 ft
Orange County12,96065%155 ft
Huntington County12,83035%133 ft
Wabash County12,79841%214 ft
Greene County12,49941%165 ft
Monroe County12,4139%130 ft
Dubois County12,01428%154 ft
Clinton County11,77635%72 ft
White County11,68347%150 ft
Clark County11,3649%69 ft
Jennings County11,35441%81 ft
Randolph County11,35046%138 ft
Fulton County10,93753%50 ft
Decatur County10,66040%80 ft
Clay County10,36539%228 ft
Jay County10,04849%141 ft
Gibson County9,70929%87 ft
Warrick County9,49615%100 ft
Brown County9,42361%100 ft
Spencer County9,24747%140 ft
Parke County9,02256%156 ft
Rush County8,64952%71 ft
Jefferson County8,51426%81 ft
Knox County8,34123%80 ft
Pulaski County8,23166%42 ft
Perry County7,93741%100 ft
Scott County7,79432%45 ft
Newton County7,75256%46 ft
Tipton County7,74550%204 ft
Fountain County7,45545%110 ft
Fayette County7,27731%55 ft
Sullivan County7,06334%96 ft
Crawford County6,48462%155 ft
Switzerland County5,95861%86 ft
Warren County5,59066%32 ft
Floyd County5,4087%80 ft
Pike County5,14342%120 ft
Martin County5,03851%175 ft
Blackford County4,19035%117 ft
Vermillion County4,09527%114 ft
Union County3,90655%51 ft
Benton County3,03235%105 ft
Ohio County3,01151%77 ft
Vanderburgh County2,4731%200 ft
Marion County479under 1%80 ft

Questions people ask about well water in Indiana

Does Indiana require private wells to be tested?

Indiana doesn't require routine testing of existing private wells. Keeping a well safe is up to the owner, so test for bacteria and nitrate every year.

Where can I get my well water tested in Indiana?

IDEM's Groundwater Monitoring Network offers free well water testing to eligible private residential wells (2026 announcement at events.in.gov/event/gwmn-welltesting-2026). Otherwise, use a lab certified by Indiana for drinking water. The state's list is linked on this page.

Where these numbers come from

  • How many people use wells: EPA estimates from the 2020 Census.
  • Lab tests: Water Quality Portal (USGS and EPA), well samples since 2000.
  • State programs and links: Indiana Department of Health.