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Indiana system directory

Find a community water system

Search every Indiana community water system with a current nitrate result. Open a system to see its latest reading, reporting date, nitrate band and population served.

745

systems with a current result

5,177,315

people served by them

138

systems carrying a supplier result

23

systems at or above 5 mg/L

2

systems listed with older records

How to read the directory: each system is placed in a band by its most recent reported result in the rolling three-year window. Purchased-water systems carry their supplier's result and are tagged. Bands describe how strongly human activity, read from nitrate, has marked a water source; they are not a safety verdict. Also listed: 2 systems whose latest report predates the window, marked “no current result” - the dated record is on the system's own page, and it is counted in no figure here.

Showing 747 of 747 systems

A

Aberdeen Pate Water Company, Inc.Human impact clear4.45 mg/LJun 20264,787 served Advance Water WorksNatural background0.10 mg/LJun 2024500 served Akron Water DepartmentNatural background0.25 mg/LMar 20251,206 served Albany Water DepartmentNatural background0.50 mg/LDec 20252,165 served Albion Water & SewerNatural background0.24 mg/LSep 20252,349 served Alexandria Water DepartmentNatural background0.50 mg/LMar 20265,149 served Alfordsville Water Utilitypurchased waterHuman impact likely2.90 mg/LJan 2026510 served Ambia Water DepartmentNatural background0.05 mg/LJun 2025250 served American Mobile Home Parkpurchased waterHuman impact likely2.42 mg/LApr 202665 served Ancilla Domini (Convent)Natural background0.05 mg/LFeb 2025680 served And-Tro Water Authority - District 1purchased waterHuman impact likely2.10 mg/LApr 20262,833 served And-Tro Water Authority - District 2purchased waterNatural background0.05 mg/LAug 20251,798 served Anderson Township Regional Sewer Dist.Natural background0.25 mg/LApr 2025900 served Anderson Water DepartmentNatural background0.68 mg/LMar 202655,212 served Andrews Water DepartmentNatural background0.05 mg/LJul 20251,149 served Angola Water DepartmentNatural background0.35 mg/LJun 20269,340 served Anoka Acres Mobile Home ParkNatural background0.28 mg/LOct 2025127 served Apple Valley Utilities, Inc.Natural background0.25 mg/LMay 2026712 served Aqua Indiana Water Companypurchased waterNatural background0.05 mg/LApr 20261,350 served Arcadia Water DepartmentNatural background0.25 mg/LAug 20251,515 served Argos Municipal Water PlantNatural background0.25 mg/LFeb 20251,680 served Arrowhead Mobile Home ParkNatural background0.50 mg/LMay 202665 served Ashbury RidgeNatural background0.37 mg/LJan 2026340 served Ashley Water DepartmentNatural background0.10 mg/LJun 2026983 served Atlanta Water DepartmentNatural background0.33 mg/LJul 2024735 served Attica Water UtilityHuman impact likely1.47 mg/LApr 20263,147 served Auburn Water DepartmentNatural background0.34 mg/LAug 202512,800 served Aurora UtilitiesNatural background0.51 mg/LAug 20256,415 served Autumn Acres Subdivisionpurchased waterNatural background0.50 mg/LDec 202548 served Autumn GroveNatural background0.05 mg/LMar 202667 served Avilla Water DepartmentNatural background0.10 mg/LSep 20242,700 served

B

B&B Water Project, Inc.purchased waterNatural background0.05 mg/LNov 20254,695 served Bainbridge Water WorksNatural background0.91 mg/LApr 2025830 served Bargersville Water DepartmentNatural background0.31 mg/LMar 202434,418 served Batesville Water UtilityNatural background0.23 mg/LMar 20267,323 served Battle Ground Water DistrictNatural background0.25 mg/LApr 20261,940 served Bbp Water CompanyNatural background0.47 mg/LMar 20269,903 served Bedford City UtilitiesHuman impact likely2.70 mg/LJun 202614,000 served Ben Mar ChateauNatural background0.03 mg/LSep 2025166 served Berne Water DepartmentNatural background0.39 mg/LJan 20264,388 served Bicknell Municipal UtilitiesNatural background0.25 mg/LJan 20264,064 served Big Oaks CampgroundNatural background0.50 mg/LJun 202637 served Big Walnut Water Companypurchased waterNatural background0.75 mg/LMay 2024500 served Birdseye Water Systempurchased waterHuman impact likely2.90 mg/LJan 2026972 served Bloomingdale Water WorksHealth-study range8.24 mg/LApr 2026562 served City of Bloomington UtilitiesNatural background0.05 mg/LNov 202583,000 served Blue Ridge Mobile Home ParkNatural background0.05 mg/LDec 2025300 served Blue River Estates Mobile Home ParkNatural background0.25 mg/LMay 202699 served Blue River Regional Water DistrictNatural background0.25 mg/LAug 20252,000 served Bluffton Utilities Water DeptNatural background0.05 mg/LAug 202510,298 served City of BoonvilleNatural background0.10 mg/LJul 202510,260 served Borden Tri-County RegionNatural background0.17 mg/LApr 202511,637 served Boswell Water DepartmentNatural background0.25 mg/LApr 2026750 served Bourbon Water DepartmentNatural background0.25 mg/LApr 20251,767 served Brazil City Water WorksHuman impact likely2.17 mg/LApr 202612,000 served Bremen Water DepartmentHuman impact likely1.07 mg/LFeb 20254,516 served Bremerton Mobile Home ParkNatural background0.03 mg/LMay 202679 served Bristol Mobile VillageHuman impact likely2.02 mg/LJan 2026238 served Bristol Water DepartmentHuman impact clear3.03 mg/LAug 20251,805 served Brook Water UtilityNatural background0.05 mg/LMar 2026986 served Brooklyn Water WorksNatural background0.21 mg/LFeb 20261,600 served Brookston Water DepartmentNatural background0.25 mg/LMar 20251,815 served Brookville Water WorksHuman impact clear3.35 mg/LFeb 20262,800 served Brown County Water UtilityNatural background0.05 mg/LFeb 202515,368 served Brownsburg Water WorksHuman impact likely2.17 mg/LMay 202623,750 served Bruceville Water Utilitypurchased waterHuman impact clear4.14 mg/LApr 2026449 served Bunker Hill Water WorksNatural background0.38 mg/LApr 2026900 served Butler Water DepartmentNatural background0.35 mg/LJan 20262,700 served

C

Cade ApartmentsNatural background0.50 mg/LMay 202650 served Cambridge City Municipal Water WorksHuman impact likely1.91 mg/LOct 20251,900 served Camden Water UtilityNatural background0.50 mg/LJun 2025611 served Camp Atterburypurchased waterHuman impact clear3.51 mg/LAug 20255,300 served Campbellsburg Water WorksNatural background0.25 mg/LApr 2026900 served Canaan Utilitiespurchased waterHuman impact clear4.45 mg/LJun 20264,428 served Cannelton UtilitiesHuman impact clear3.21 mg/LMar 20251,658 served Caps Mobile Home ParkNatural background0.10 mg/LJan 2026182 served Carbon Water Corporationpurchased waterHuman impact likely2.17 mg/LApr 20261,088 served Carlisle Water DepartmentNatural background0.10 mg/LAug 20253,125 served Carmel Clay Waterpurchased waterNatural background0.05 mg/LJul 2025393 served Carmel Water DepartmentNatural background0.40 mg/LApr 202699,927 served Carriage Light Mhp - Lots 39-58Natural background0.10 mg/LJan 202656 served Carthage Water DepartmentHuman impact likely2.23 mg/LJan 20261,000 served Cataract Lake Water CorporationHuman impact likely1.43 mg/LMar 20253,215 served Cayuga Water DepartmentHuman impact likely2.50 mg/LDec 20251,162 served Cedar Creek Mobile Home ParkNatural background0.28 mg/LOct 2025150 served Cedar Gardens MhpNatural background0.03 mg/LFeb 202634 served Cedar Lake - Robins NestNatural background0.03 mg/LOct 2025950 served Cedar Lake Bible Conference GroundsNatural background0.03 mg/LJan 2026150 served Cedar Lake Mobile Home ParkNatural background0.03 mg/LJan 2026200 served Cedar Lake Water WorksNatural background0.03 mg/LSep 20254,600 served Center Point Water Workspurchased waterHuman impact likely2.17 mg/LApr 2026625 served Centerville Water WorksHuman impact likely2.60 mg/LSep 20252,533 served Chain O Lakes Correctional FacilityNatural background0.25 mg/LJan 2025186 served Chalmers Water WorksNatural background0.25 mg/LMar 2025550 served Chandler Water Works DepartmentNatural background0.25 mg/LMar 202520,120 served Chesterfield Water DepartmentNatural background0.50 mg/LAug 20252,800 served Chrisney Water Departmentpurchased waterNatural background0.10 mg/LFeb 2026823 served Churubusco Water DepartmentNatural background0.16 mg/LMar 20251,803 served Cicero Water DepartmentNatural background0.50 mg/LAug 20255,607 served Citizens Water - IndianapolisNatural background0.05 mg/LJul 2025880,345 served Citizens Water - Morganpurchased waterNatural background0.05 mg/LJul 20255,705 served Citizens Water of Westfield LlcNatural background0.45 mg/LMay 202565 served Citizens Water of Westfield, LlcHuman impact clear3.03 mg/LMay 202661,493 served Clarks Hill Water WorksNatural background0.61 mg/LAug 2025660 served Clay City Water WorksNatural background0.53 mg/LJun 20261,152 served Clearwater Village Mobile Home ParkNatural background0.25 mg/LJan 2026400 served Clinton Township Water CompanyHuman impact likely2.73 mg/LAug 20252,300 served Clinton Water UtilityHuman impact clear4.10 mg/LAug 20254,773 served Cloverdale Water WorksNatural background0.25 mg/LMay 20252,225 served Coachlight Mhp LlcNatural background0.38 mg/LJan 202696 served Cobus Green Mobile Home ParkNatural background0.25 mg/LJan 20261,042 served Colfax Water CompanyNatural background0.25 mg/LDec 2025690 served Colonial Mobile CourtNatural background0.05 mg/LDec 202599 served Columbia City Water DepartmentNatural background0.05 mg/LMar 20269,892 served Columbus Municipal UtilityHuman impact clear4.42 mg/LApr 202651,122 served Connersville UtilitiesHuman impact likely1.35 mg/LMar 202613,282 served Converse Water WorksNatural background0.50 mg/LMar 20251,265 served Cordry Sweetwater Conservancy Districtpurchased waterHuman impact clear3.51 mg/LAug 20253,425 served Corunna Water UtilityNatural background0.05 mg/LDec 2025255 served Corydon Water WorksNatural background0.25 mg/LApr 20265,716 served Country Acres Mobile Home ParkNatural background0.50 mg/LNov 2025150 served Country Club CrossingNatural background0.05 mg/LMar 202644 served Country Court EstatesNatural background0.05 mg/LApr 2026362 served Country Estates Mobile Home ParkNatural background0.50 mg/LFeb 202590 served Country Meadows Mobile Home ParkNatural background0.05 mg/LMar 202655 served Country Retreat Mhc, LlcHuman impact clear3.03 mg/LJan 202535 served Country Squire Mobile Home Park, Inc.Natural background0.50 mg/LDec 202525 served Country View EstatesHuman impact likely1.85 mg/LJun 202630 served Countryside VillasNatural background0.28 mg/LOct 202548 served Countryview FarmsNatural background0.50 mg/LNov 2025290 served Covington Water DepartmentHuman impact likely2.05 mg/LSep 20252,645 served Crane Water Workspurchased waterHuman impact clear3.60 mg/LApr 2026293 served Crawford County Water Company, Inc.purchased waterNatural background0.25 mg/LApr 20262,678 served Creekside Manor MhpNatural background0.05 mg/LJan 202673 served Creekside Mobile Home ParkNatural background0.50 mg/LJun 202575 served Cromwell Water WorksNatural background0.25 mg/LJan 2025550 served Crossings Mobile Home ParkNatural background0.03 mg/LNov 2025100 served Crothersville UtilitiesNatural background0.25 mg/LJun 20251,875 served Crown Point Water Workspurchased waterNatural background0.35 mg/LApr 202630,000 served Cuii - Indiana Water Servicepurchased waterNatural background0.35 mg/LApr 20264,200 served Cuii - Twin LakesNatural background0.17 mg/LFeb 20268,000 served Cuii - Water Service Co.Human impact likely1.46 mg/LFeb 2026654 served Culver Educational FoundationNatural background0.25 mg/LJan 20261,940 served Culver Water DepartmentNatural background0.05 mg/LApr 20261,391 served Culvers Hill - North WebsterHuman impact clear4.34 mg/LMay 202675 served Cynthiana Water Workspurchased waterNatural background0.99 mg/LJan 2026699 served

D

Dale Water Workspurchased waterNatural background0.05 mg/LAug 20251,637 served Daleville (Town of)Natural background0.50 mg/LAug 20251,560 served Dana Water WorksNatural background0.77 mg/LAug 2025660 served Danville Water WorksHuman impact likely1.21 mg/LAug 202510,500 served Darlington WaterHuman impact clear3.91 mg/LAug 2024860 served Daviess County Rural Waterpurchased waterNatural background0.27 mg/LFeb 20267,969 served Davis Mobile Home ParkNatural background0.05 mg/LApr 202535 served Dayton Water Utilitypurchased waterHuman impact likely1.51 mg/LApr 20241,420 served Decatur Co. Water Corp.purchased waterHuman impact likely1.32 mg/LJul 20253,440 served Decatur Water DepartmentNatural background0.47 mg/LFeb 20269,900 served Decker Water WorksNatural background0.77 mg/LAug 2025273 served Deer Creek Estates Home Water Assoc.Natural background0.09 mg/LJan 2026265 served Delaware Acres MhcNatural background0.50 mg/LJun 2026126 served Delphi Water WorksNatural background0.31 mg/LFeb 20263,200 served Dillsboro Water Workspurchased waterNatural background0.51 mg/LAug 20252,000 served District 39 ApartmentsNatural background0.05 mg/LJul 202536 served Dixon Woods ApartmentsNatural background0.09 mg/LJan 202625 served Dublin Municipal Water WorksNatural background0.50 mg/LSep 2025790 served Dubois Water Utilitiespurchased waterHuman impact likely2.90 mg/LJan 20269,078 served Duff Water Corporationpurchased waterNatural background0.05 mg/LAug 2025825 served Dugger Utilitiespurchased waterHealth-study range7.72 mg/LJun 20261,935 served Duneland Beach Associationpurchased waterNatural background0.44 mg/LMar 2026300 served Dunkirk Water DepartmentNatural background0.50 mg/LAug 20242,305 served Dupont Water Companypurchased waterHuman impact likely2.61 mg/LMay 20253,865 served Dyer Water Departmentpurchased waterNatural background0.33 mg/LMay 202616,800 served

E

Eagles Nest EstatesNatural background0.10 mg/LJan 2026350 served Eagletown Estates Mobile Home ParkNatural background0.25 mg/LJun 202697 served Earl Park Municipal Water UtilityNatural background0.25 mg/LNov 2025300 served East Chicago Water WorksNatural background0.32 mg/LMay 202626,370 served East Fork WaterHealth-study range5.33 mg/LAug 20253,485 served East Lawrence Water Authoritypurchased waterHuman impact likely2.70 mg/LJun 20268,000 served East Monroe Water Corporationpurchased waterNatural background0.05 mg/LNov 20253,648 served East Washington Rural Waterpurchased waterNatural background0.72 mg/LMar 20268,613 served Eastern Bartholomew WaterHuman impact likely1.72 mg/LMar 202613,547 served Eastern Heights UtilitiesHuman impact clear3.60 mg/LApr 202619,028 served Eaton Water WorksNatural background0.50 mg/LJun 20251,595 served Edgewood Water DepartmentNatural background0.50 mg/LMay 20262,053 served Edinburgh Water UtilityNatural background0.05 mg/LApr 20264,480 served Edwardsport Water UtilityHealth-study range5.15 mg/LMar 2026488 served Edwardsville Water CorporationNatural background0.82 mg/LMar 202610,442 served Elberfeld Water Departmentpurchased waterNatural background0.99 mg/LJan 20262,122 served Town of ElizabethHuman impact likely2.11 mg/LMar 20264,450 served Elkhart Mobile Home ParkNatural background0.05 mg/LApr 202696 served Elkhart Public Works And UtilitiesHuman impact likely1.50 mg/LJan 202546,455 served Ellettsville Water Workspurchased waterNatural background0.05 mg/LNov 202514,500 served Ellis Water Company, Inc.purchased waterHealth-study range7.72 mg/LJun 20262,892 served Elnora Water WorksNatural background0.22 mg/LFeb 2025620 served Elwood Water & SewageNatural background0.50 mg/LFeb 20258,586 served Emerald IiHuman impact likely2.91 mg/LMay 202598 served English Water Workspurchased waterNatural background0.05 mg/LAug 2025886 served Etna Green Water DepartmentHealth-study range5.12 mg/LApr 2026663 served Evansville Water UtilityNatural background0.99 mg/LJan 2026182,444 served Everton Water CorporationNatural background0.25 mg/LAug 20251,800 served

F

Fairmount Mhp, L.P.Natural background0.50 mg/LJan 202680 served Fairmount Water WorksNatural background0.50 mg/LJul 20252,756 served Fairview Park Water UtilitiesHuman impact clear3.84 mg/LMar 20251,386 served Fairway Regional Water DistrictNatural background0.25 mg/LApr 2026210 served Farmland Municipal Water WorksNatural background0.50 mg/LJan 20261,301 served Fawn River CrossingNatural background0.05 mg/LApr 2026653 served Fayette Township Water Assn.Human impact clear4.06 mg/LMay 20252,000 served Fci & Fpc - Terre HauteHuman impact likely1.78 mg/LMar 20251,390 served Ferdinand Water Departmentpurchased waterNatural background0.05 mg/LAug 20252,918 served Town of Fillmore Utilitiespurchased waterNatural background0.75 mg/LMay 2024510 served Finch Newton Water, Inc.purchased waterNatural background0.05 mg/LAug 20252,672 served Flora Water WorksNatural background0.50 mg/LJul 20252,100 served Floyds Knobs Water Company, Inc.purchased waterNatural background0.25 mg/LJul 20256,690 served Forest Oaks Mhc, LlcNatural background0.05 mg/LSep 2025500 served Fort Branch Water DepartmentNatural background0.25 mg/LMar 20254,020 served Fort Wayne - 3 Rivers Filtration PlantNatural background0.52 mg/LJun 2026269,994 served Fortville Water WorksNatural background0.05 mg/LOct 20257,638 served Fountain City Water WorksNatural background0.50 mg/LAug 2025735 served Fowler Water WorksNatural background0.25 mg/LNov 20252,342 served Francisco Water Departmentpurchased waterNatural background0.99 mg/LJan 2026900 served Frankfort Water WorksNatural background0.46 mg/LApr 202616,422 served Franklin County Water AssociationHuman impact likely1.04 mg/LJan 20248,200 served Frankton Water WorksNatural background0.50 mg/LFeb 20261,800 served Freelandville Water AssociationNatural background0.92 mg/LJul 20251,175 served Fremont Water DepartmentNatural background0.10 mg/LJun 20262,138 served

G

Galveston Water WorksNatural background0.05 mg/LMar 20261,258 served Garden City Mobile Home ParkHuman impact likely1.16 mg/LMay 2026140 served Garrett Water UtilityNatural background0.22 mg/LSep 20256,390 served Gaston Water WorksNatural background0.50 mg/LJan 2026838 served Gatewood EstatesNatural background0.05 mg/LJan 2026202 served Geneva Water DepartmentNatural background0.50 mg/LJun 20251,359 served Gentryville Water Utilitypurchased waterNatural background0.10 mg/LFeb 20261,625 served City of Georgetown (Illinois)Human impact clear3.74 mg/LAug 202550 served German Township Water District Inc.purchased waterNatural background0.99 mg/LJan 202612,890 served Gibson Water Authoritypurchased waterNatural background0.99 mg/LJan 20264,835 served Glen Eden AssociationNatural background0.58 mg/LDec 202535 served Glenn Hills Non-Profit Corp.Natural background0.50 mg/LSep 202469 served Glenwood Water WorksNatural background0.05 mg/LNov 2025313 served Golden Acres Mobile Home ParkNatural background0.10 mg/LJan 2026112 served Golden Pebbles EstatesNatural background0.25 mg/LJun 2025107 served Goshen Water UtilityNatural background0.05 mg/LJan 202532,267 served Gosport Water UtilityNatural background0.50 mg/LAug 2025849 served Grabill Water WorksNatural background0.50 mg/LAug 20231,163 served Grandview Municipal Water UtilityHuman impact likely1.92 mg/LMay 2025765 served Grantsburg Rural Water Companypurchased waterNatural background0.05 mg/LAug 2025250 served Grate Properties MhcNatural background0.10 mg/LJan 202666 served Grayfox Public Water SupplyNatural background0.03 mg/LAug 2025118 served Green Acres Mobile Home ParkNatural background0.50 mg/LOct 202532 served Green Acres Mobile Home ParkNatural background0.05 mg/LNov 2025500 served Greencastle Department of WaterNatural background0.75 mg/LMay 202412,699 served City of Greendale UtilitiesHuman impact likely1.01 mg/LApr 20265,092 served Greenfield Water UtilityNatural background0.05 mg/LMay 202526,671 served Greensburg Municipal Water WorksHuman impact likely1.32 mg/LJul 202512,650 served Greentown Municipal WaterNatural background0.28 mg/LMar 20252,500 served Greenville Water Utilitypurchased waterNatural background0.82 mg/LMar 20264,920 served Griffith Water Departmentpurchased waterNatural background0.33 mg/LMay 202616,893 served

H

Hagerstown Municipal Water WorksHuman impact likely2.42 mg/LMar 20251,700 served Hamilton County Regional Utilitypurchased waterNatural background0.07 mg/LMay 2026125 served Hamilton GroveHuman impact likely1.20 mg/LFeb 2025384 served Hamilton Water DepartmentNatural background0.21 mg/LFeb 20252,675 served Hamlet Water WorksNatural background0.05 mg/LJun 2025801 served Hammond Water Works DepartmentNatural background0.33 mg/LMay 202678,384 served Hanover Collegepurchased waterHuman impact likely1.59 mg/LApr 20261,250 served Hanover Water Departmentpurchased waterHuman impact likely1.59 mg/LApr 20262,597 served Harris Hills Mobile Home ParkNatural background0.50 mg/LMar 202527 served Hartford City Water WorksNatural background0.50 mg/LJan 20265,600 served Haubstadt Water Departmentpurchased waterNatural background0.99 mg/LJan 20261,600 served Hayden Water Associationpurchased waterHuman impact likely1.83 mg/LMay 20252,395 served Hazleton Water DepartmentNatural background0.10 mg/LAug 2025288 served Heartland ResortNatural background0.25 mg/LJun 202565 served Hebron Water DepartmentNatural background0.16 mg/LAug 20253,724 served Heritage Hills Campgroundpurchased waterHuman impact likely1.04 mg/LJan 2024525 served Heritage PointeNatural background0.50 mg/LMar 2026451 served Hickory Lake Water Management Orgpurchased waterHuman impact likely2.17 mg/LApr 202645 served Hideaway HillsNatural background0.03 mg/LFeb 2025470 served Highland Water Workspurchased waterNatural background0.33 mg/LMay 202623,984 served Hill Water CorporationNatural background0.30 mg/LAug 20238,200 served Hillsboro Water UtilityNatural background0.94 mg/LApr 2025540 served Hillsdale Water CorporationNatural background0.20 mg/LAug 2025735 served Hilltop Ridge ApartmentsHuman impact clear3.22 mg/LOct 202552 served Hilltop Ridge Apartments Phase TwoNatural background0.05 mg/LOct 202529 served Hogan Water Corporationpurchased waterNatural background0.05 mg/LApr 20261,238 served Holiday Woods Recreational ParkNatural background0.50 mg/LAug 2025200 served Holland Water Workspurchased waterNatural background0.05 mg/LAug 20251,200 served Holston RentalsNatural background0.05 mg/LJun 202560 served Holton Community Water Corp.purchased waterHuman impact likely1.29 mg/LJun 20262,363 served Homestead Water AssociationNatural background0.10 mg/LJul 202450 served Hoosier Hills Regional Water DistrictHuman impact likely1.29 mg/LJun 20268,660 served Hoosier Youth Challenge AcademyNatural background0.50 mg/LMay 2025262 served Hope Water Departmentpurchased waterHuman impact likely1.72 mg/LMar 20262,113 served Hudson Water Workspurchased waterNatural background0.10 mg/LJun 2026518 served Huntertown Water WorksNatural background0.55 mg/LMar 202614,058 served Huntingburg Municipal WaterNatural background0.05 mg/LJan 20266,526 served Huntington Water DepartmentNatural background0.37 mg/LFeb 202617,300 served Hymera Water Workspurchased waterNatural background0.45 mg/LAug 2025984 served

I

Indian Springs Town HomesNatural background0.25 mg/LSep 202590 served Indiana AcademyNatural background0.50 mg/LSep 2025113 served Indiana American Water - CharlestownNatural background0.05 mg/LApr 20268,658 served Indiana American Water - ClaypoolNatural background0.01 mg/LJan 2026413 served Indiana American Water - CrawfordsvilleNatural background0.01 mg/LApr 202615,930 served Indiana American Water - Farmersburgpurchased waterHuman impact likely2.93 mg/LApr 20262,095 served Indiana American Water - Georgetownpurchased waterNatural background0.25 mg/LJul 20253,605 served Indiana American Water - Johnson CountyNatural background0.01 mg/LApr 202686,813 served Indiana American Water - KokomoHealth-study range5.32 mg/LApr 202659,313 served Indiana American Water - LowellNatural background0.02 mg/LApr 202611,908 served Indiana American Water - MeccaHuman impact likely2.34 mg/LApr 2026905 served Indiana American Water - MeromNatural background0.04 mg/LApr 2026380 served Indiana American Water - MooresvilleHuman impact likely1.18 mg/LApr 202610,083 served Indiana American Water - MuncieHuman impact likely2.42 mg/LApr 202674,030 served Indiana American Water - NewburghNatural background0.25 mg/LApr 202622,215 served Indiana American Water - NoblesvilleNatural background0.19 mg/LJun 202645,575 served Indiana American Water - NorthwestNatural background0.35 mg/LApr 2026210,510 served Indiana American Water - RichmondHuman impact clear3.56 mg/LApr 202641,485 served Indiana American Water - Rivers EdgeHuman impact likely1.08 mg/LJul 2025610 served Indiana American Water - RussiavilleNatural background0.01 mg/LJul 20251,178 served Indiana American Water - S. IndianaNatural background0.25 mg/LJul 2025104,445 served Indiana American Water - SeymourHuman impact likely1.17 mg/LApr 202620,725 served Indiana American Water - ShelbyvilleNatural background0.79 mg/LApr 202619,093 served Indiana American Water - SheridanNatural background0.07 mg/LMay 20264,435 served Indiana American Water - SomersetNatural background0.02 mg/LJul 2025245 served Indiana American Water - SullivanNatural background0.66 mg/LApr 20266,598 served Indiana American Water - SummitvilleNatural background0.01 mg/LJul 20251,078 served Indiana American Water - Terre HauteHuman impact likely2.93 mg/LApr 202667,765 served Indiana American Water - WabashNatural background0.03 mg/LApr 202612,140 served Indiana American Water - WarsawNatural background0.01 mg/LJun 202613,835 served Indiana American Water - WavelandNatural background0.01 mg/LApr 2026605 served Indiana American Water - West LafayetteHuman impact likely1.32 mg/LApr 202635,533 served Indiana American Water - WinchesterNatural background0.01 mg/LApr 20265,405 served Indiana American Water - Yankeetownpurchased waterNatural background0.10 mg/LJul 20251,838 served Indiana Masonic Homepurchased waterNatural background0.01 mg/LApr 2026654 served Ingalls Water CompanyNatural background0.50 mg/LAug 20257,600 served Inwood EstatesNatural background0.05 mg/LJan 202650 served Ireland Utilities, Inc.purchased waterHuman impact likely2.90 mg/LJan 20264,395 served

J

J. B. Water Works, Inc.Natural background0.05 mg/LMay 2025307 served Jackson County Water - Reddingtonpurchased waterHuman impact likely1.17 mg/LApr 20261,080 served Jackson County Water UtilityNatural background0.11 mg/LOct 202313,667 served Jamestown Municipal WaterNatural background0.05 mg/LSep 20251,000 served Jasonville Water DepartmentNatural background0.45 mg/LAug 20253,660 served Jasper Municipal Water UtilityHuman impact likely2.90 mg/LJan 202617,440 served Jennings Northwest Regional Utilitypurchased waterHuman impact likely1.83 mg/LMay 20252,955 served Jennings Water, Inc.Human impact likely1.83 mg/LMay 20258,370 served Jimmerson Shores Co-OpNatural background0.10 mg/LJan 2026120 served Jonesboro Water DepartmentNatural background0.50 mg/LDec 20252,034 served Josiah WhitesNatural background0.50 mg/LDec 2025416 served Josiah Whites (Penguins)Natural background0.50 mg/LAug 202525 served

K

Kendallville Water DepartmentNatural background0.03 mg/LAug 202410,300 served Kent Water CompanyHuman impact likely1.59 mg/LApr 20266,750 served Kewanna Water WorksNatural background0.25 mg/LMay 2026678 served Kingman Water WorksHuman impact likely1.49 mg/LApr 2026560 served Kings Court Mobile Home ParkNatural background0.05 mg/LJun 202637 served Kings Ridge Homeowners AssociationNatural background0.05 mg/LApr 202690 served Kingsbury Utility CorporationHealth-study range5.10 mg/LJun 2026240 served Kingsford Heights WaterHuman impact likely1.20 mg/LJun 20251,800 served Kirklin Water DepartmentHuman impact likely1.08 mg/LMar 2026788 served Knightstown Water UtilityNatural background0.25 mg/LSep 20252,182 served Knightsville Water Workspurchased waterHuman impact likely2.17 mg/LApr 20261,523 served Knox County Water, Inc.purchased waterHuman impact clear4.14 mg/LApr 20263,525 served Knox Water WorksNatural background0.05 mg/LJun 20263,700 served Kouts Water WorksNatural background0.05 mg/LAug 20252,028 served Kozy Kourt Dba Silo FarmsNatural background0.25 mg/LApr 2026325 served Kulich Rentals Inc.Health-study range6.72 mg/LMay 202661 served

L

L & M Regional Water DistrictNatural background0.50 mg/LSep 2025450 served L-A-C Utilitiespurchased waterNatural background0.10 mg/LFeb 20262,441 served L-M-S Conservancy DistrictNatural background0.05 mg/LApr 20265,375 served Lacrosse Water DepartmentNatural background0.05 mg/LMay 2026540 served Ladoga Water WorksNatural background0.25 mg/LMar 20251,180 served Lafayette Water WorksHuman impact likely1.51 mg/LApr 202470,835 served Lafontaine Water CompanyNatural background0.50 mg/LAug 2024906 served Lagrange Department of Water WorksNatural background0.03 mg/LSep 20252,625 served Lagro Municipal Water DepartmentNatural background0.05 mg/LApr 2025438 served Lake Cicott ShoresNatural background0.25 mg/LJun 202694 served Lake Estates Manufactured Home CommunityNatural background0.25 mg/LJan 2026192 served Lake Hill Park - Thayer Inc.Natural background0.25 mg/LDec 2025104 served Lake of The Woods MhpNatural background0.05 mg/LJan 202646 served Lake Santee RwwdNatural background0.32 mg/LDec 20241,500 served Lake View Mobile Home ParkNatural background0.05 mg/LApr 202562 served Lake View Mobile Home ParkNatural background0.09 mg/LApr 202690 served Lakeshore Subdivision Association, Inc.Natural background0.03 mg/LJan 2026265 served Lakeside Manor Mobile Home ParkNatural background0.10 mg/LFeb 2026215 served Lakeville Water DepartmentNatural background0.05 mg/LAug 2025750 served Lakewood Mobile Home ParkNatural background0.25 mg/LMar 202625 served Lanesville Water Workspurchased waterNatural background0.82 mg/LMar 20261,009 served Lapel Municipal Water CompanyNatural background0.50 mg/LAug 20242,379 served Laporte Water WorksNatural background0.12 mg/LApr 202622,197 served Laurel Water DepartmentHuman impact likely2.24 mg/LSep 2025560 served City of Lawrence UtilitiesNatural background0.83 mg/LApr 202649,000 served Lawrenceburg Municipal UtilitiesNatural background0.25 mg/LMay 20255,000 served Lazy OaksNatural background0.25 mg/LDec 202548 served Leavenworth Water CompanyNatural background0.25 mg/LApr 2026233 served Lebanon UtilitiesHuman impact likely1.10 mg/LFeb 202616,840 served Leisure Acres Mobile Home ParkHuman impact likely1.69 mg/LMar 202649 served Leisure Lakes Mobile Home CourtNatural background0.10 mg/LSep 202527 served Leisure Lane Mobile Home ParkNatural background0.10 mg/LJan 202631 served Len-Del Mobile Home CourtHuman impact likely1.61 mg/LSep 2025100 served Lewisville Water WorksNatural background0.88 mg/LSep 2025392 served Liberty Country Club- Housing Develop.Natural background0.50 mg/LDec 202534 served Liberty Farms Mobile Home Park - #1Natural background0.25 mg/LApr 2025390 served Liberty Mobile Home ParkNatural background0.12 mg/LMay 202650 served Liberty Water WorksHuman impact clear3.51 mg/LMay 20252,133 served Ligonier Water WorksNatural background0.50 mg/LDec 20254,405 served Linda Ann Mobile Home ParkNatural background0.10 mg/LDec 202430 served Linden Water DepartmentHuman impact likely1.05 mg/LMay 2026759 served Linton Municipal Water UtilityHealth-study range7.72 mg/LJun 20267,430 served Little Eagle Creek EstatesNatural background0.25 mg/LJun 202635 served Town of Lizton Water UtilityHuman impact likely2.30 mg/LFeb 2026488 served Logansport Municipal Utility-Well FieldHuman impact likely1.90 mg/LMay 202618,369 served Long Beach Water Departmentpurchased waterNatural background0.44 mg/LMar 20262,050 served Loogootee Water WorksHuman impact likely1.17 mg/LMar 20252,800 served Lyford Water WorksHealth-study range5.07 mg/LJan 20261,000 served Lynn Hill Court & Charles ManorNatural background0.25 mg/LMar 202644 served Lynn Water CompanyNatural background0.50 mg/LApr 20261,097 served Lynnville Water Workspurchased waterNatural background0.05 mg/LAug 20251,200 served Lyons Water UtilityNatural background0.60 mg/LDec 2025870 served

M

Madison State HospitalHuman impact likely1.18 mg/LMay 20251,375 served Madison Water DepartmentHuman impact likely2.61 mg/LMay 202515,323 served Magnolia Place EastNatural background0.05 mg/LOct 202554 served Magnolia Place SouthNatural background0.05 mg/LMar 202570 served Magnolia Place WestHuman impact likely2.25 mg/LMar 202551 served Mallards Pointe Water SystemNatural background0.10 mg/LSep 2025150 served Maple Lane Village Mobile Home ParkNatural background0.28 mg/LOct 2025232 served Maple Lawn VillageNatural background0.28 mg/LOct 2025250 served Mapleturn Utilities, Inc.Natural background0.12 mg/LAug 20251,725 served Maplewood Estates Mhc LlcHuman impact likely2.25 mg/LApr 202637 served Markle Water UtilityNatural background0.50 mg/LDec 20251,095 served Marshall Water Workspurchased waterHealth-study range8.24 mg/LApr 2026330 served Martinsville Water UtilityHuman impact clear3.03 mg/LFeb 202615,000 served Marysville Otisco Nabb Water Corp.purchased waterNatural background0.05 mg/LApr 20266,813 served Maysville Region. Water & Sewer Districtpurchased waterNatural background0.50 mg/LAug 20231,634 served Meadow Acres Mobile Home ParkNatural background0.03 mg/LFeb 202593 served Mecks Whispering Pines Ii LlcNatural background0.05 mg/LMay 2025598 served Medora Water DepartmentHuman impact clear4.14 mg/LMar 2026873 served Mentone Water CompanyNatural background0.25 mg/LMar 20251,001 served Merrywood Mobile Home ParkNatural background0.25 mg/LMay 2026210 served Miami Village Mobile Home ParkNatural background0.05 mg/LMar 2025215 served Michigan City Department of Water WorksNatural background0.44 mg/LMar 202633,996 served Middlebury Water DepartmentNatural background0.05 mg/LApr 20263,420 served Middletown Water UtilityNatural background0.50 mg/LAug 20252,050 served Milan Water Workspurchased waterHuman impact likely1.29 mg/LJun 20261,980 served Milford Water DepartmentNatural background0.25 mg/LJul 20251,556 served Mill Road EstatesNatural background0.05 mg/LApr 2026150 served Millersburg Water CompanyNatural background0.05 mg/LOct 2025957 served Millwood Acres, Inc.Natural background0.05 mg/LJan 2026113 served Milton Water WorksNatural background0.50 mg/LSep 2025650 served Mishawaka UtilitiesNatural background0.90 mg/LSep 202549,675 served Mitchell Water DepartmentHuman impact likely2.42 mg/LApr 20265,000 served Mobil-RamaNatural background0.10 mg/LDec 202430 served Modernaire Trailer CourtNatural background0.25 mg/LApr 2026105 served Monroe City Water UtilitiesHuman impact clear4.24 mg/LJun 2026813 served Monroe Water DepartmentNatural background0.26 mg/LFeb 2025872 served Monroeville Water WorksNatural background0.27 mg/LSep 20251,400 served Montezuma Municipal UtilityAbove the federal limit14.40 mg/LApr 20261,022 served Montgomery Water WorksNatural background0.82 mg/LApr 2026900 served Monticello Water WorksNatural background0.25 mg/LJan 20265,300 served Montpelier Water WorksNatural background0.50 mg/LAug 20251,515 served Mooresville Acrespurchased waterNatural background0.30 mg/LAug 2023752 served Morgan County Rural Water CompanyHuman impact likely2.00 mg/LAug 20258,800 served Morgantown Water UtilityHuman impact likely1.07 mg/LAug 20251,125 served Morocco Water DepartmentNatural background0.05 mg/LNov 20251,200 served Morris Mobile Home EstatesHuman impact clear3.98 mg/LMar 202575 served Morristown Water DepartmentNatural background0.67 mg/LJun 20261,218 served Mount Summit Water UtilityNatural background0.50 mg/LAug 2025350 served Mount Vernon Water WorksHuman impact likely1.19 mg/LMar 20266,426 served Mulberry Water WorksNatural background0.05 mg/LJun 20261,252 served Munster Water Companypurchased waterNatural background0.33 mg/LMay 202623,894 served Muscatatuck Urban Training Centerpurchased waterHuman impact likely1.83 mg/LMay 202540 served

N

Napoleon Community Rural Water Corp.purchased waterNatural background0.20 mg/LApr 20265,564 served Nappanee Water UtilityNatural background0.25 mg/LMay 20256,800 served Nashville Water Departmentpurchased waterNatural background0.05 mg/LNov 20253,315 served Natural Public Supply, Inc.Human impact likely1.21 mg/LJul 20251,560 served Naval Support Activity, CraneNatural background0.10 mg/LMay 20266,538 served Neighbors of Beechwood LlcNatural background0.03 mg/LNov 202563 served Neighbors of Pine Hills Holdings, LlcNatural background0.25 mg/LJan 2026332 served Neighbors of Pioneer Crossings, LlcNatural background0.10 mg/LApr 202660 served Neighbors of Rolling PrairieNatural background0.50 mg/LJul 202570 served Neighbors of TimbercreekNatural background0.05 mg/LMar 2026110 served Neighbors of Westville Estates LlcNatural background0.05 mg/LDec 2025315 served New Carlisle Water WorksNatural background0.33 mg/LAug 20251,861 served New Castle Correctional Facilitypurchased waterNatural background0.30 mg/LMar 20263,160 served New Castle UtilitiesNatural background0.30 mg/LMar 202619,880 served New Chicago Water Workspurchased waterNatural background0.35 mg/LApr 20265,500 served New Durham EstatesNatural background0.05 mg/LSep 20251,099 served New Harmony Water UtilityHuman impact clear4.00 mg/LJun 20251,633 served New Haven Water Departmentpurchased waterNatural background0.52 mg/LJun 202615,700 served New Market Water WorksNatural background0.25 mg/LApr 2025765 served New Pekin Water Utilitypurchased waterNatural background0.72 mg/LMar 20262,150 served New Richmond Water WorksNatural background0.25 mg/LJun 2025330 served Newberry Water UtilityHealth-study range6.74 mg/LMay 2026249 served Newport Water WorksNatural background0.10 mg/LFeb 2026495 served Newton Co. Regional Water & Sewerpurchased waterNatural background0.05 mg/LMar 2026130 served Ninestar Connect - Gem WaterNatural background0.50 mg/LJul 20251,700 served Noble Oaks Subdivision Water AssociationNatural background0.03 mg/LJan 202670 served North Dearborn Water AuthorityHuman impact clear3.46 mg/LApr 20265,775 served North Judson Water CompanyNatural background0.71 mg/LFeb 20261,800 served North Lawrence Water AuthorityHuman impact likely2.74 mg/LApr 202511,625 served North Liberty Water WorksNatural background0.31 mg/LAug 20251,896 served North Manchester Water DepartmentNatural background0.25 mg/LJul 20256,100 served North Salem Water CorporationNatural background0.05 mg/LNov 2025515 served Northport Mobile Home ParkNatural background0.10 mg/LJan 202647 served Northwest Jasper Regional Water DistrictNatural background0.03 mg/LFeb 20264,054 served

O

Oak Brook EstatesNatural background0.28 mg/LOct 2025455 served Oak Wood CircleNatural background0.05 mg/LMar 202630 served Oakland City Water DepartmentNatural background0.05 mg/LSep 20252,938 served Oaktown Water WorksHuman impact likely1.62 mg/LJun 2026832 served Oakwood Community Association, Inc.Natural background0.49 mg/LFeb 2025210 served Oakwood Mobile Home ParkNatural background0.07 mg/LJan 202645 served Odon Water Utilities, Inc.Natural background0.27 mg/LFeb 20261,703 served Ogden Dunes Waterpurchased waterNatural background0.35 mg/LApr 20261,110 served Oldenburg Water WorksHuman impact likely1.53 mg/LAug 2024880 served Oolitic Water Workspurchased waterHuman impact likely2.70 mg/LJun 20261,315 served Or-An Trailer CourtNatural background0.10 mg/LJan 202655 served Orestes Water WorksNatural background0.25 mg/LApr 2025400 served Orland Water WorksNatural background0.05 mg/LDec 2025530 served Orleans Water Workspurchased waterNatural background0.05 mg/LAug 20252,142 served Osgood Water DepartmentNatural background0.20 mg/LApr 20261,692 served Ossian Municipal Water DepartmentNatural background0.05 mg/LApr 20253,289 served Otterbein Water DepartmentNatural background0.25 mg/LSep 20241,262 served Otwell Water Corp. #2purchased waterNatural background0.25 mg/LAug 2025705 served Otwell Water CorporationNatural background0.82 mg/LMar 20262,100 served Owensville Water WorksHealth-study range8.22 mg/LApr 20262,148 served Oxford Water UtilityNatural background0.05 mg/LJul 20251,200 served

P

Painted Hills Utility CompanyNatural background0.05 mg/LSep 20251,560 served Palmyra Water Workspurchased waterNatural background0.25 mg/LJul 20254,425 served Paoli Water Departmentpurchased waterNatural background0.05 mg/LAug 20253,677 served Paragon Water WorksNatural background0.25 mg/LApr 2025663 served Parker City Water DepartmentNatural background0.50 mg/LSep 20251,400 served Patoka Lake Regional WaterNatural background0.05 mg/LAug 202513,503 served Patoka Water & ElectricHuman impact likely1.02 mg/LMay 2026750 served Patoka Water Company, Inc.purchased waterNatural background0.05 mg/LAug 20251,038 served Patriot Water DepartmentHealth-study range6.58 mg/LFeb 202611,937 served Paxton Water CorporationHuman impact likely2.09 mg/LMar 20252,013 served Pence Water WorksNatural background0.05 mg/LMay 202637 served Pendleton Water CompanyNatural background0.25 mg/LApr 20265,758 served Pennville Water CompanyNatural background0.50 mg/LAug 2025706 served Perrysville Water WorksNatural background0.21 mg/LAug 2025470 served Peru Utilities/GrissomNatural background0.05 mg/LFeb 20262,500 served Peru Water DepartmentNatural background0.14 mg/LJan 202611,417 served Petersburg Water CompanyNatural background0.25 mg/LAug 20254,018 served Philly Estates LlcNatural background0.50 mg/LApr 2025190 served Pierceton Water WorksNatural background0.03 mg/LMar 2025928 served Pike-Gibson Water, Inc.purchased waterNatural background0.99 mg/LJan 202610,000 served Pine Meadows EstateNatural background0.05 mg/LMar 202621 served Pine RidgeNatural background0.25 mg/LJun 2026135 served Pinecrest/Stuckman Mobile Home ParksNatural background0.05 mg/LJul 202546 served Pines Mobile Home ParkNatural background0.50 mg/LAug 202325 served Pioneer Water L.L.C.Natural background0.12 mg/LMay 20262,076 served Pittsboro Water CompanyHuman impact likely1.20 mg/LMar 20264,113 served Plainfield Re-Entry Educational FacilityNatural background0.25 mg/LFeb 20264,500 served Plainfield Water WorksNatural background0.25 mg/LFeb 202634,477 served Pleasantview Utilities, Inc.purchased waterHuman impact likely1.35 mg/LMar 2026500 served Pleasantville Water Companypurchased waterHealth-study range7.72 mg/LJun 2026924 served Plymouth Water DepartmentNatural background0.29 mg/LJun 202610,241 served Ponderosa EstatesNatural background0.05 mg/LMar 202655 served Portland Municipal Water PlantNatural background0.50 mg/LMar 20266,209 served Posey Township Water Corp.Natural background0.05 mg/LMay 20263,500 served Poseyville Municipal Water DepartmentHealth-study range7.48 mg/LApr 20261,400 served Pretty View Condominium Owners AssocHuman impact likely2.02 mg/LApr 202585 served Princes Lake Water DepartmentHuman impact clear3.51 mg/LAug 20254,095 served Princeton Water DepartmentHuman impact likely1.28 mg/LAug 202510,875 served Purdue Univ. Water WorksHuman impact likely1.84 mg/LMay 202550,000 served Putnamville Correctional Facilitypurchased waterNatural background0.51 mg/LSep 20242,505 served

Q

Queen Road Mobile Home ParkNatural background0.05 mg/LJan 202632 served

R

Ramsey Water Company, Inc.Natural background0.25 mg/LJul 202516,475 served Redkey Water PlantNatural background0.50 mg/LSep 20251,323 served Reelsville Water CompanyNatural background0.51 mg/LSep 20242,800 served Regency Mhp - Regency Estates, LlcNatural background0.25 mg/LFeb 2026128 served Regency Pointe Estates Mobile Home ParkNatural background0.25 mg/LMay 2026345 served Rensselaer Water DepartmentNatural background0.25 mg/LApr 20266,200 served Reo Water CorporationNatural background0.25 mg/LMar 20263,875 served Reynolds Water WorksNatural background0.03 mg/LOct 2025533 served Rhoades Mhp, LlcHuman impact likely1.01 mg/LJan 202660 served Rhs Water Corporationpurchased waterNatural background0.05 mg/LNov 2025870 served Richmond Mobile Home Parkpurchased waterHuman impact clear3.56 mg/LApr 2026150 served Ridgeville Water DepartmentNatural background0.50 mg/LMar 2026825 served Riley Resort Land TrustNatural background0.03 mg/LJan 202639 served Rising Sun UtilitiesHuman impact clear3.96 mg/LApr 20262,400 served River Bend Manor Mobile Home ParkNatural background0.03 mg/LOct 202444 served Riverbend EstatesNatural background0.20 mg/LDec 202550 served Riverside CommunityNatural background0.50 mg/LNov 202550 served Roachdale Water Worksno current resultlast Aug 2023980 served Roads End Mobile Home ParkHealth-study range6.73 mg/LSep 202560 served Roann Water WorksNatural background0.05 mg/LMay 2026400 served Roanoke Water WorksNatural background0.05 mg/LSep 20251,722 served Rochester Water DepartmentNatural background0.10 mg/LApr 20266,218 served Rockport WaterHuman impact likely2.24 mg/LMar 20262,520 served Rockville Light & WaterNatural background0.10 mg/LJul 20254,195 served Rockwell Shores ApartmentsNatural background0.03 mg/LJan 202645 served Rocky Acres Mobile Home ParkHuman impact clear3.81 mg/LDec 202550 served Rome City Housing Auth. - Warrener CourtNatural background0.03 mg/LDec 202594 served Rosedale Water WorksNatural background0.05 mg/LAug 2025810 served Rossville Water WorksNatural background0.25 mg/LOct 20241,653 served Royal Center Water UtilityNatural background0.05 mg/LAug 2025861 served Royal Oaks Estates LlcNatural background0.50 mg/LSep 202595 served Royal Oaks Homeowners Assn., Inc.Natural background0.25 mg/LMar 2026390 served Rural Membership Water Corp. of Clark Copurchased waterNatural background0.17 mg/LApr 20268,630 served Rushville City UtilityNatural background0.13 mg/LSep 20256,800 served Russellville Water Worksno current resultlast Aug 2023405 served Rykers Ridge Water Companypurchased waterHuman impact likely2.61 mg/LMay 20252,050 served

S

Sacred Heart Apostolic SchoolNatural background0.25 mg/LApr 202546 served Salamonie Country EstatesNatural background0.05 mg/LApr 202630 served Salem Water WorksNatural background0.72 mg/LMar 20268,200 served Salt Creek Services, Inc.Natural background0.05 mg/LNov 202590 served Sandborn Water DepartmentNatural background0.51 mg/LDec 2025449 served Santa Claus Water UtilityNatural background0.10 mg/LFeb 20263,683 served Scenic View Mobile Home CommunityNatural background0.25 mg/LJan 202625 served Schererville Water Departmentpurchased waterNatural background0.35 mg/LApr 202630,000 served Schneider Water DepartmentNatural background0.25 mg/LApr 2026267 served Scottsburg Water DepartmentNatural background0.15 mg/LMay 20257,369 served Seelyville Water WorksNatural background0.91 mg/LNov 20256,393 served Sellersburg Water DepartmentNatural background0.17 mg/LApr 202615,655 served Shadeland Mobile Home ParkHealth-study range5.17 mg/LJul 2024200 served Shady Grove Mobile Home ParkHuman impact likely1.40 mg/LOct 2025100 served Shady Side Water Corporationpurchased waterNatural background0.05 mg/LNov 202595 served Share FoundationNatural background0.05 mg/LDec 202586 served Sharpsville Water UtilityNatural background0.28 mg/LMar 2025553 served Shelburn Water UtilitiesNatural background0.81 mg/LAug 20252,500 served Shelbys LandingNatural background0.50 mg/LMay 202527 served Shipshewana Water WorksNatural background0.40 mg/LAug 2025703 served Shirley Municipal WaterNatural background0.25 mg/LMar 2026960 served Shoals Water CompanyHuman impact clear3.35 mg/LJun 20251,296 served Silver Lake Rv & Mobile Home EstatesNatural background0.10 mg/LJan 2025272 served Silver Lake Water WorksNatural background0.25 mg/LMar 20251,030 served Sisters of Holy Cross-St. Marys CollegeNatural background0.21 mg/LAug 20252,111 served Sisters of Providence/St. Mary of WoodsNatural background0.10 mg/LFeb 2025900 served Sisters-St. Francis Perpetual AdorationHealth-study range6.10 mg/LMay 2026145 served Skyview Mobile Home ParkHealth-study range6.50 mg/LJul 202684 served South 43 Water Association, Inc.purchased waterNatural background0.75 mg/LMay 20241,431 served South Bend Water WorksNatural background0.50 mg/LApr 2026115,000 served South Coast Conservancy Districtpurchased waterNatural background0.05 mg/LSep 20252,013 served South Harrison Water CorporationHuman impact clear4.12 mg/LMar 20269,057 served South Lawrence UtilitiesHuman impact likely2.16 mg/LApr 20256,395 served South Richland Conservancy Districtpurchased waterNatural background0.10 mg/LApr 202675 served South Whitley Municipal WaterNatural background0.05 mg/LSep 20251,818 served Southern Monroe Water Authoritypurchased waterNatural background0.05 mg/LNov 20258,877 served Southwest Civic Shareholders AssociationNatural background0.50 mg/LApr 202655 served Southwestern Bartholomew Water Corp.purchased waterHuman impact clear4.42 mg/LApr 20268,652 served Speedway Water WorksNatural background0.79 mg/LOct 202510,578 served Spiceland Municipal Water UtilityNatural background0.25 mg/LMar 2026969 served Springhill Mobile Home CourtNatural background0.25 mg/LApr 202592 served Springs Valley Regional Water Districtpurchased waterNatural background0.05 mg/LAug 20253,188 served Spurgeon Water Workspurchased waterNatural background0.99 mg/LJan 2026430 served St Jude Village Water CorporationNatural background0.50 mg/LNov 202538 served St. Anthony Water Utilitypurchased waterHuman impact likely2.90 mg/LJan 20261,813 served St. Bernice Water Corp.purchased waterHuman impact likely2.73 mg/LAug 2025750 served St. Henry Water Corporationpurchased waterNatural background0.05 mg/LAug 20253,293 served St. Joe Water DepartmentNatural background0.10 mg/LJan 2026460 served St. John Municipal Water UtilityNatural background0.03 mg/LMay 202525,700 served St. Meinrad Utilities, Inc.purchased waterNatural background0.05 mg/LAug 2025658 served St. Paul Municipal WaterHuman impact likely2.66 mg/LSep 20251,096 served Staunton Municipal WaterNatural background0.05 mg/LAug 2025550 served Sti-Bel Mobile Home ParkNatural background0.14 mg/LMar 202540 served Stoney Creek Estates Mhc, LlcNatural background0.05 mg/LJul 202545 served Stucker Fork Water UtilityNatural background0.61 mg/LMar 202519,120 served Suburban Acres MhpNatural background0.05 mg/LDec 2025190 served Suburban Court ApartmentsNatural background0.50 mg/LApr 202653 served Suburban Estates, LlcNatural background0.25 mg/LJun 2026350 served Sullivan-Vigo Rural Water Corp.purchased waterHuman impact likely2.93 mg/LApr 20262,765 served Sunflower Valley Water Co, Inc.purchased waterNatural background0.17 mg/LApr 202675 served Sunman Water WorksNatural background0.25 mg/LMay 20261,058 served Sunnymede Community Association Waterpurchased waterNatural background0.52 mg/LJun 2026473 served Sunset Harbor CondominiumsNatural background0.03 mg/LJan 202640 served Sunset Village & Rv ParkNatural background0.05 mg/LAug 202525 served Swayzee Water UtilityNatural background0.89 mg/LMay 2025975 served Switz City Water Workspurchased waterHealth-study range7.72 mg/LJun 2026888 served Syracuse Water CompanyNatural background0.03 mg/LJan 20262,810 served

T

Tall Oaks Mobile Home ParkNatural background0.05 mg/LJan 202660 served Tall Timbers Mobile Home ParkNatural background0.50 mg/LDec 202590 served Tell City Water DepartmentHuman impact likely2.10 mg/LApr 20269,315 served Ten Oaks MhpNatural background0.25 mg/LApr 2026270 served Tennyson Water Utilitypurchased waterNatural background0.05 mg/LAug 20254,158 served Terrace Hills MhcNatural background0.50 mg/LMar 202626 served The Hills At St. Joe FarmNatural background0.25 mg/LJan 202625 served The Landings Homeowners AssociationNatural background0.25 mg/LMar 2025159 served The Oaks of KokomoNatural background0.28 mg/LOct 2025150 served Thorntown UtilitiesNatural background0.25 mg/LDec 20251,600 served Timberbrook Mobile Home ParkNatural background0.05 mg/LSep 20251,418 served Timbernest TownhousesNatural background0.28 mg/LOct 2025175 served Tipton Utility Service BNatural background0.50 mg/LJun 20265,200 served Topeka Water DepartmentNatural background0.10 mg/LJun 20241,178 served Trafalgar Water Departmentpurchased waterHuman impact clear3.51 mg/LAug 20251,490 served Trails Edge AptsNatural background0.10 mg/LFeb 2026260 served Tri-County Conservancy Districtpurchased waterNatural background0.05 mg/LJul 20253,078 served Tri-Township Water CorporationHuman impact likely1.58 mg/LApr 202610,435 served Troy Township Water Associationpurchased waterHuman impact likely2.10 mg/LApr 2026700 served Troy Water UtilityNatural background0.25 mg/LMar 20261,223 served Turkey Creek Regional Sewer DistrictNatural background0.03 mg/LFeb 2025593 served

U

Umh In Broadmore, Llc Aka Broadmore EstaNatural background0.05 mg/LSep 2025972 served Union City Water WorksNatural background0.50 mg/LAug 20233,513 served Universal Water WorksNatural background0.60 mg/LAug 2025473 served University of Notre DameNatural background0.51 mg/LApr 20267,400 served Upland Water DepartmentNatural background0.50 mg/LAug 20253,308 served

V

Valley Rural Utility Companypurchased waterHuman impact likely1.01 mg/LApr 20265,529 served Valley View EstatesNatural background0.05 mg/LApr 202680 served Valley View Mobile Home ParkNatural background0.25 mg/LMar 202650 served Valparaiso Department of Water WorksNatural background0.10 mg/LFeb 202636,000 served Van Bibber Lake Conservancy DistrictNatural background0.05 mg/LDec 2025830 served Van Buren Municipal UtilitiesHuman impact likely2.01 mg/LMar 2026864 served Van Buren Water, Inc.purchased waterNatural background0.05 mg/LNov 20256,670 served Veedersburg Municipal Water SupplyNatural background0.10 mg/LAug 20252,299 served Vermillion Rise Mega ParkHuman impact clear4.68 mg/LDec 2025135 served Versailles Water Workspurchased waterHuman impact likely1.29 mg/LJun 20262,200 served Vevay Water DepartmentHuman impact clear3.08 mg/LApr 20261,883 served Village Green Mobile Home ParkNatural background0.25 mg/LAug 2025102 served Vincennes Water DepartmentHuman impact clear4.14 mg/LApr 202618,701 served

W

Wakarusa Water WorksNatural background0.69 mg/LFeb 20261,998 served Waldron Conservancy DistrictHuman impact likely1.27 mg/LApr 2025800 served Walkerton Light & WaterNatural background0.05 mg/LJan 20262,262 served Walton Water WorksNatural background0.05 mg/LJan 20251,040 served Wanatah Water UtilityNatural background0.03 mg/LJun 20261,050 served Warren Municipal Water WorksNatural background0.50 mg/LApr 20251,237 served Washington Township WaterHuman impact likely2.36 mg/LSep 20254,315 served Washington Twp Water Authoritypurchased waterNatural background0.05 mg/LNov 20253,825 served Washington Water WorksNatural background0.10 mg/LJul 202513,690 served Waterloo Water WorksNatural background0.30 mg/LFeb 20252,242 served Watson Rural Water CompanyHuman impact likely1.32 mg/LFeb 202615,750 served Waubee Lake Mobile Home ParkHuman impact likely1.20 mg/LMay 202630 served Waynetown Water WorksNatural background0.18 mg/LApr 2026953 served Webster EstatesNatural background0.23 mg/LJan 2026122 served Wells Homeowners Association, Inc.Natural background0.21 mg/LJan 202698 served West Lebanon Water WorksHuman impact likely1.84 mg/LJun 2025723 served West Terre Haute WaterHuman impact likely1.36 mg/LSep 20254,075 served Western Estates Mobile Home ParkNatural background0.28 mg/LOct 2025248 served Westhaven Mhp LlcNatural background0.05 mg/LOct 2025417 served Westport Water CompanyNatural background0.77 mg/LMay 20241,300 served Westville Correctional FacilityNatural background0.05 mg/LDec 20252,850 served Westville Water DepartmentNatural background0.05 mg/LSep 20251,800 served Wheatland Water WorksNatural background0.10 mg/LMar 2026474 served Whiteland Water Workspurchased waterNatural background0.01 mg/LApr 20265,955 served Whitestown Southpurchased waterNatural background0.05 mg/LJul 20255,880 served Whiting Water Departmentpurchased waterNatural background0.33 mg/LMay 20264,900 served Wildcat HighlandsNatural background0.25 mg/LMar 2026360 served Wilfred Water Corporationpurchased waterNatural background0.45 mg/LAug 2025400 served Williamsport Water UtilityHuman impact likely2.70 mg/LAug 20251,800 served Willow Creek CrossingNatural background0.03 mg/LJun 202534 served Willow Springs MhpNatural background0.28 mg/LJan 202525 served Winamac Municipal UtilitiesNatural background0.50 mg/LDec 20252,400 served Windfall Water DepartmentNatural background0.68 mg/LSep 2023708 served Windstar Park Inc.Natural background0.05 mg/LMay 202644 served Wingate Water WorksNatural background0.10 mg/LMay 2024299 served Winslow Water Workspurchased waterNatural background0.99 mg/LJan 20261,010 served Wolcott Water WorksNatural background0.25 mg/LJan 20261,001 served Wolcottville Water WorksNatural background0.40 mg/LSep 20251,035 served Woodburn Water WorksNatural background0.46 mg/LMar 20241,609 served Woodland Hills Mobile Home Park #1Natural background0.28 mg/LDec 2025100 served Woodland Hills Mobile Home Park #2Natural background0.28 mg/LDec 2025168 served Woodland Village Mobile Home ParkNatural background0.50 mg/LApr 202658 served Woodview Mobile Home ParkNatural background0.50 mg/LSep 2025100 served

Y

Yorktown Water DepartmentNatural background0.50 mg/LDec 20256,200 served

Z

Zionsville Mhp TrustNatural background0.05 mg/LOct 202557 served

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NitrateSmart

Nitrate in community water systems, from the utilities’ own compliance reporting.

Results reaching back to July 2023 · current through August 9, 2026.

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Educational information, not medical or personal safety advice.