Indiana: drinking water & radon
Indiana has 711 active community water systems. Since 2016, 197 reported health-based violations; 14 had a latest lead result above 15 ppb; 21 measured PFOA or PFOS at or above 4 ppt.
Radon zones in Indiana
tap a countyMost health-based violations
| Salt Creek Services, INC. 90 people | 27 |
| Salem Water Works 8,200 people | 25 |
| North Vernon Water Department 6,500 people | 24 |
| Glenwood Water Works 313 people | 23 |
| Montezuma Municipal Utility 1,022 people | 22 |
| Westport Water Company 1,725 people | 19 |
| Oolitic Water Works 1,315 people | 18 |
| Willow Springs MHP 25 people | 11 |
| Hamilton Grove 384 people | 11 |
| Riley Resort Land Trust 39 people | 11 |
Highest latest lead (90th percentile)
| Grabill Water Works 1,163 people | 58.6 ppb |
| Indiana American Water - Wabash 12,140 people | 38 ppb |
| Chain O Lakes Correctional Facility 186 people | 31.3 ppb |
| Hilltop Ridge Apartments 52 people | 26 ppb |
| Lacrosse Water Department 540 people | 22 ppb |
| Edwardsport Water Utility 488 people | 15 ppb |
| Mooresville Acres 752 people | 14.7 ppb |
| Cedar Lake Water Works 4,600 people | 14.5 ppb |
| Columbia City Water Department 9,892 people | 14 ppb |
| Kingman Water Works 560 people | 14 ppb |
Highest PFOA / PFOS
| Marysville Otisco Nabb Water Corp. 6,813 people | 14.5 ppt |
| Indiana American Water - Charlestown 8,658 people | 13.4 ppt |
| Brown County Water Utility 15,368 people | 12.9 ppt |
| South Bend Water Works 115,000 people | 10 ppt |
| Pike-Gibson Water, INC. 10,000 people | 7.9 ppt |
| Greenville Water Utility 4,920 people | 7.2 ppt |
| West Terre Haute Water 4,075 people | 7.1 ppt |
| Palmyra Water Works 4,425 people | 6.5 ppt |
| Hanover Water Department 2,597 people | 6.3 ppt |
| Jackson County Water Utility 13,667 people | 6 ppt |
Largest systems
| Citizens Water - Indianapolis 880,345 people | 880,345 |
| Fort Wayne - 3 Rivers Filtration Plant 269,994 people | 269,994 |
| Indiana American Water - Northwest 210,510 people | 210,510 |
| South Bend Water Works 115,000 people | 115,000 |
| Indiana American Water - S. Indiana 104,445 people | 104,445 |
| Carmel Water Department 99,927 people | 99,927 |
| Indiana American Water - Johnson County 86,813 people | 86,813 |
| City of Bloomington Utilities 83,000 people | 83,000 |
| Hammond Water Works Department 78,384 people | 78,384 |
| Indiana American Water - Muncie 74,030 people | 74,030 |
All ZIP codes in Indiana
929 ZIP codes.
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 Indiana have violations?
197 of 711 active community water systems in Indiana reported at least one health-based violation since 2016 (EPA SDWIS).
What is the radon risk in Indiana?
603 ZIP codes are in EPA radon zone 1 (highest potential), 326 in zone 2 and 0 in zone 3. EPA recommends testing every home.