State drinking water records
Indiana drinking water systems
770 community water systems serve Indiana and are listed below under 92 counties and on the pages of 591 cities and towns. Their own population figures add up to 5,230,262 people, a sum that counts people twice where one system sells water to another.
209 of them (27%) had at least one health-based violation in the last 10 years. 214 systems still have one unresolved.
654 rely mainly on groundwater and 116 on surface water, counting water bought from other systems.
744 systems filed a lead service line inventory listing 152,654 lead lines, 20,933 galvanized lines that must be replaced and 704,110 lines of unknown material.
43 systems are placed by the county their records name: EPA has no service area map for 31 of them, and 12 have one that does not line up with their own records.
- Community water systems
- 770
- People served, sum of each system's own figure
- 5,230,262
- Systems with a health-based violation, last 10 years
- 209
- Systems with one unresolved
- 214
- Lead service lines in inventories
- 152,654
Counties
92 countiesEach county counts the systems whose service area map reaches it. Systems placed only by a mailing address are listed on the county pages but not counted here.
| County | Systems | People served | With a health-based violation, 10 years | With one unresolved |
|---|---|---|---|---|
| Adams County | 6 | 16,779 | 2 | 2 |
| Allen County | 12 | 308,737 | 2 | 4 |
| Bartholomew County | 7 | 80,089 | 2 | 1 |
| Benton County | 6 | 6,104 | 1 | 2 |
| Blackford County | 2 | 7,115 | 0 | 2 |
| Boone County | 7 | 26,012 | 2 | 1 |
| Brown County | 3 | 22,108 | 0 | 0 |
| Carroll County | 5 | 6,088 | 2 | 1 |
| Cass County | 7 | 21,981 | 1 | 2 |
| Clark County | 9 | 176,513 | 3 | 1 |
| Clay County | 8 | 20,643 | 4 | 3 |
| Clinton County | 7 | 20,921 | 1 | 0 |
| Crawford County | 6 | 7,085 | 3 | 3 |
| Daviess County | 6 | 25,392 | 1 | 0 |
| DeKalb County | 8 | 25,996 | 2 | 1 |
| Dearborn County | 11 | 57,499 | 4 | 2 |
| Decatur County | 5 | 19,986 | 5 | 1 |
| Delaware County | 13 | 89,896 | 3 | 1 |
| Dubois County | 11 | 61,963 | 2 | 1 |
| Elkhart County | 16 | 97,999 | 4 | 3 |
| Fayette County | 5 | 15,652 | 1 | 1 |
| Floyd County | 5 | 130,102 | 0 | 0 |
| Fountain County | 5 | 9,191 | 2 | 0 |
| Franklin County | 6 | 25,538 | 2 | 2 |
| Fulton County | 3 | 8,102 | 0 | 0 |
| Gibson County | 9 | 28,354 | 4 | 5 |
| Grant County | 8 | 44,380 | 3 | 5 |
| Greene County | 9 | 48,225 | 4 | 2 |
| Hamilton County | 16 | 227,739 | 5 | 2 |
| Hancock County | 8 | 36,516 | 0 | 0 |
| Harrison County | 7 | 43,132 | 2 | 2 |
| Hendricks County | 9 | 78,419 | 2 | 1 |
| Henry County | 8 | 29,090 | 0 | 2 |
| Howard County | 10 | 64,201 | 3 | 0 |
| Huntington County | 8 | 23,520 | 5 | 4 |
| Jackson County | 7 | 39,841 | 1 | 2 |
| Jasper County | 5 | 12,153 | 2 | 2 |
| Jay County | 4 | 10,543 | 0 | 1 |
| Jefferson County | 8 | 37,638 | 0 | 3 |
| Jennings County | 7 | 24,663 | 3 | 3 |
| Johnson County | 8 | 141,330 | 0 | 1 |
| Knox County | 11 | 31,243 | 4 | 6 |
| Kosciusko County | 31 | 26,757 | 9 | 14 |
| LaGrange County | 9 | 6,582 | 3 | 3 |
| LaPorte County | 20 | 69,090 | 9 | 9 |
| Lake County | 29 | 525,931 | 5 | 7 |
| Lawrence County | 7 | 48,477 | 2 | 1 |
| Madison County | 13 | 93,008 | 4 | 3 |
| Marion County | 3 | 939,923 | 1 | 0 |
| Marshall County | 12 | 22,657 | 5 | 3 |
| Martin County | 5 | 14,412 | 1 | 3 |
| Miami County | 12 | 17,198 | 4 | 7 |
| Monroe County | 8 | 126,085 | 4 | 0 |
| Montgomery County | 10 | 21,711 | 2 | 3 |
| Morgan County | 9 | 47,971 | 0 | 4 |
| Newton County | 9 | 6,149 | 2 | 4 |
| Noble County | 13 | 21,150 | 1 | 4 |
| Ohio County | 2 | 7,187 | 1 | 0 |
| Orange County | 3 | 9,007 | 0 | 1 |
| Owen County | 3 | 13,967 | 0 | 0 |
| Parke County | 8 | 9,559 | 4 | 4 |
| Perry County | 6 | 17,527 | 1 | 1 |
| Pike County | 6 | 18,263 | 2 | 1 |
| Porter County | 10 | 264,853 | 2 | 1 |
| Posey County | 4 | 10,158 | 1 | 0 |
| Pulaski County | 3 | 3,983 | 1 | 1 |
| Putnam County | 10 | 25,215 | 2 | 2 |
| Randolph County | 8 | 14,041 | 2 | 3 |
| Ripley County | 8 | 30,840 | 2 | 3 |
| Rush County | 5 | 9,275 | 2 | 1 |
| Scott County | 2 | 26,489 | 2 | 1 |
| Shelby County | 10 | 27,070 | 2 | 2 |
| Spencer County | 10 | 21,551 | 1 | 3 |
| St. Joseph County | 12 | 180,323 | 3 | 3 |
| Starke County | 3 | 6,301 | 1 | 0 |
| Steuben County | 15 | 16,731 | 6 | 2 |
| Sullivan County | 9 | 20,554 | 1 | 1 |
| Switzerland County | 3 | 18,607 | 1 | 0 |
| Tippecanoe County | 11 | 162,410 | 2 | 3 |
| Tipton County | 3 | 6,461 | 2 | 2 |
| Union County | 2 | 2,658 | 0 | 0 |
| Vanderburgh County | 2 | 195,334 | 0 | 0 |
| Vermillion County | 11 | 13,254 | 5 | 5 |
| Vigo County | 11 | 85,722 | 2 | 5 |
| Wabash County | 12 | 20,960 | 5 | 4 |
| Warren County | 3 | 2,560 | 1 | 1 |
| Warrick County | 7 | 61,913 | 2 | 1 |
| Washington County | 6 | 35,000 | 4 | 1 |
| Wayne County | 12 | 50,203 | 5 | 4 |
| Wells County | 5 | 15,052 | 1 | 2 |
| White County | 13 | 11,585 | 3 | 8 |
| Whitley County | 7 | 14,152 | 1 | 1 |
Largest systems
| System | Main county | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Citizens Water - Indianapolis | Marion County | 880,345 | Surface water | 0 | 0 | 56,766 |
| Fort Wayne - 3 Rivers Filtration Plant | Allen County | 269,994 | Surface water | 1 | 1 | 11,299 |
| Indiana American Water - Northwest | Lake County and 1 other county | 210,510 | Surface water | 0 | 0 | 11,817 |
| Evansville Water Utility | Vanderburgh County | 182,444 | Surface water | 0 | 0 | 0 |
| South Bend Water Works | St. Joseph County | 115,000 | Groundwater | 0 | 0 | 27,001 |
| Indiana American Water - S. Indiana | Clark County and 1 other county | 104,445 | Groundwater | 0 | 0 | 101 |
| Carmel Water Department | Hamilton County | 99,927 | Groundwater under direct influence | 2 | 0 | 0 |
| Indiana American Water - Johnson County | Johnson County | 86,813 | Groundwater | 0 | 0 | 6 |
| City of Bloomington Utilities | Monroe County | 83,000 | Surface water | 3 | 0 | 3 |
| Hammond Water Works Department | Lake County | 78,384 | Surface water | 1 | 0 | 22,380 |
| Indiana American Water - Muncie | Delaware County | 74,030 | Surface water | 0 | 0 | 170 |
| Lafayette Water Works | Tippecanoe County | 70,835 | Groundwater | 0 | 0 | 3,196 |
| Indiana American Water - Terre Haute | Vigo County | 67,765 | Groundwater | 0 | 0 | 1,198 |
| Citizens Water of Westfield, LLC | Hamilton County | 61,493 | Groundwater | 0 | 0 | 0 |
| Indiana American Water - Kokomo | Howard County | 59,313 | Surface water | 0 | 0 | 93 |
Systems with unresolved health-based violations
214 systemsThe 100 with the most unresolved violations are listed. The county pages list the other 114.
| System | Main county | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Norwood Regional Water & Sewage | Huntington County | 486 | Groundwater | 7 | 11 | 0 |
| Oldenburg Water Works | Franklin County | 880 | Purchased surface water | 3 | 9 | 0 |
| Grantsburg Rural Water Company | Crawford County | 250 | Purchased surface water | 2 | 7 | 0 |
| Country Retreat MHC, LLC | Wayne County | 35 | Groundwater | 1 | 7 | No inventory |
| Clearview Resort | White County | 25 | Groundwater | 3 | 7 | No inventory |
| St. Paul Municipal Water | Decatur County and 1 other county | 1,096 | Groundwater | 3 | 6 | 0 |
| Universal Water Works | Vermillion County | 473 | Groundwater | 1 | 6 | No inventory |
| Ten Oaks MHP | Newton County | 270 | Groundwater | 1 | 6 | 0 |
| Springhill Mobile Home Court | LaPorte County | 92 | Groundwater | 5 | 6 | 0 |
| Sunflower Valley Water Co, Inc. | Clark County | 75 | Purchased groundwater | 2 | 6 | No inventory |
| Windstar Park Inc. | Kosciusko County | 44 | Groundwater | 6 | 6 | No inventory |
| Lynn Hill Court & Charles Manor | White County | 44 | Groundwater | 1 | 6 | No inventory |
| Sunset Village & RV Park | St. Joseph County | 25 | Groundwater | 2 | 6 | No inventory |
| Lakewood Mobile Home Park | White County | 25 | Groundwater | 1 | 6 | 0 |
| Brooklyn Water Works | Morgan County | 1,600 | Groundwater | 0 | 5 | 0 |
| Patoka Water Company, Inc. | Crawford County | 1,038 | Purchased surface water | 1 | 5 | 0 |
| Lanesville Water Works | Harrison County | 1,009 | Purchased groundwater | 1 | 5 | No inventory |
| Bloomingdale Water Works | Parke County | 562 | Groundwater | 7 | 5 | No inventory |
| Perrysville Water Works | Vermillion County | 470 | Groundwater | 1 | 5 | 0 |
| Richmond Mobile Home Park | Wayne County | 150 | Purchased surface water | 1 | 5 | No inventory |
| Prossers Country Estates | Wabash County | 85 | Groundwater | 9 | 5 | 0 |
| Stoney Creek Estates MHC, LLC | Wells County | 45 | Groundwater | 3 | 5 | No inventory |
| Riley Resort Land Trust | Kosciusko County | 39 | Groundwater | 9 | 5 | 0 |
| Waubee Lake Mobile Home Park | Kosciusko County | 30 | Groundwater | 3 | 5 | 0 |
| Princeton Water Department | Gibson County | 10,875 | Groundwater | 0 | 4 | 1 |
| Mitchell Water Department | Lawrence County | 5,000 | Groundwater | 0 | 4 | 0 |
| Jonesboro Water Department | Grant County | 2,034 | Groundwater | 0 | 4 | 0 |
| Andrews Water Department | Huntington County | 1,149 | Groundwater | 1 | 4 | 0 |
| Winslow Water Works | Pike County | 1,010 | Purchased surface water | 0 | 4 | 0 |
| Windfall Water Department | Tipton County | 708 | Groundwater | 1 | 4 | 0 |
| Clarks Hill Water Works | Tippecanoe County | 660 | Groundwater | 0 | 4 | 0 |
| Sharpsville Water Utility | Tipton County | 553 | Groundwater | 2 | 4 | 0 |
| Sunnymede Community Association Water | Allen County | 473 | Purchased surface water | 0 | 4 | 0 |
| Bristol Mobile Village | Elkhart County | 238 | Groundwater | 1 | 4 | No inventory |
| Shady Grove Mobile Home Park | LaPorte County | 100 | Groundwater | 0 | 4 | No inventory |
| Indian Springs Town Homes | LaPorte County | 90 | Groundwater | 1 | 4 | No inventory |
| Carriage House Estates | Wabash County | 50 | Groundwater | 1 | 4 | 0 |
| Leisure Acres Mobile Home Park | Vigo County | 49 | Groundwater | 1 | 4 | 0 |
| Liberty Country Club- Housing Develop. | Union County | 34 | Groundwater | 0 | 4 | 0 |
| North Vernon Water Department | Jennings County | 6,500 | Surface water | 21 | 3 | 1 |
| Parker City Water Department | Randolph County | 1,400 | Groundwater | 1 | 3 | 0 |
| Clay City Water Works | Clay County | 1,152 | Groundwater | 1 | 3 | 0 |
| Francesville Water Department | Pulaski County | 969 | Groundwater | 1 | 3 | 0 |
| English Water Works | Crawford County | 886 | Purchased surface water | 0 | 3 | 0 |
| Lyons Water Utility | Greene County | 870 | Groundwater | 1 | 3 | 0 |
| Oaktown Water Works | Knox County | 832 | Groundwater | 0 | 3 | 0 |
| Rosedale Water Works | Parke County | 810 | Groundwater | 0 | 3 | 0 |
| Hillsdale Water Corporation | Vermillion County and 1 other county | 735 | Groundwater | 1 | 3 | 0 |
| Sandborn Water Department | Knox County | 449 | Groundwater | 1 | 3 | 0 |
| New Richmond Water Works | Montgomery County | 330 | Groundwater | 0 | 3 | 0 |
| Trails Edge Apts | Vigo County | 260 | Groundwater | 1 | 3 | No inventory |
| Ambia Water Department | Benton County | 250 | Groundwater | 4 | 3 | 0 |
| The Landings Homeowners Association | Carroll County | 159 | Groundwater | 2 | 3 | No inventory |
| Neighbors of Timbercreek | Kosciusko County | 110 | Groundwater | 0 | 3 | 0 |
| Rome City Housing Auth. - Warrener Court | Noble County | 94 | Groundwater | 0 | 3 | 0 |
| Salt Creek Services, Inc. | Monroe County | 90 | Surface water | 23 | 3 | 0 |
| Roads End Mobile Home Park | Miami County | 60 | Groundwater | 1 | 3 | 0 |
| Rocky Acres Mobile Home Park | Vigo County | 50 | Groundwater | 0 | 3 | 0 |
| Lake of the Woods MHP | LaGrange County | 46 | Groundwater | 3 | 3 | 0 |
| Big Oaks Campground | Delaware County | 37 | Groundwater | 0 | 3 | No inventory |
| Glen Eden Association | Steuben County | 35 | Groundwater | 0 | 3 | 0 |
| Willow Springs MHP | Miami County | 25 | Groundwater | 11 | 3 | 0 |
| Munster Water Company | Lake County | 23,894 | Purchased surface water | 0 | 2 | 0 |
| New Haven Water Department | Allen County | 15,700 | Purchased surface water | 0 | 2 | 462 |
| Martinsville Water Utility | Morgan County | 15,000 | Groundwater | 0 | 2 | 5 |
| Gas City Water Department | Grant County | 6,000 | Groundwater | 1 | 2 | 0 |
| West Terre Haute Water | Vigo County | 4,075 | Groundwater | 0 | 2 | 1 |
| Fort Branch Water Department | Gibson County | 4,020 | Groundwater | 1 | 2 | 0 |
| Reo Water Corporation | Spencer County | 3,875 | Groundwater | 0 | 2 | 0 |
| Finch Newton Water, Inc. | Spencer County | 2,672 | Purchased surface water | 0 | 2 | 0 |
| Dunkirk Water Department | Jay County | 2,305 | Groundwater | 0 | 2 | 0 |
| Rykers Ridge Water Company | Jefferson County | 2,050 | Purchased groundwater | 0 | 2 | 0 |
| Fayette Township Water Assn. | Vigo County | 2,000 | Groundwater | 0 | 2 | 0 |
| Milan Water Works | Ripley County and 1 other county | 1,980 | Purchased groundwater | 1 | 2 | 0 |
| Mapleturn Utilities, Inc. | Morgan County | 1,725 | Groundwater | 0 | 2 | 0 |
| Hagerstown Municipal Water Works | Wayne County | 1,700 | Groundwater | 1 | 2 | 0 |
| Dale Water Works | Spencer County | 1,637 | Purchased surface water | 0 | 2 | 0 |
| Thorntown Utilities | Boone County | 1,600 | Groundwater | 0 | 2 | 0 |
| Montpelier Water Works | Blackford County | 1,515 | Groundwater | 0 | 2 | 0 |
| Troy Water Utility | Perry County | 1,223 | Groundwater | 1 | 2 | 15 |
| Oxford Water Utility | Benton County | 1,200 | Groundwater | 0 | 2 | 294 |
| Carbon Water Corporation | Clay County | 1,088 | Purchased groundwater | 0 | 2 | 0 |
| Bainbridge Water Works | Putnam County | 830 | Groundwater | 1 | 2 | 0 |
| Duff Water Corporation | Dubois County | 825 | Purchased surface water | 0 | 2 | 0 |
| Waldron Conservancy District | Shelby County | 800 | Groundwater | 0 | 2 | 0 |
| Patoka Water & Electric | Gibson County | 750 | Groundwater | 1 | 2 | 2 |
| Dana Water Works | Vermillion County | 660 | Groundwater | 1 | 2 | No inventory |
| Laurel Water Department | Franklin County | 560 | Groundwater | 5 | 2 | 0 |
| Reynolds Water Works | White County | 533 | Groundwater | 0 | 2 | 0 |
| Newport Water Works | Vermillion County | 495 | Groundwater | 1 | 2 | 1 |
| Edwardsport Water Utility | Knox County | 488 | Groundwater | 5 | 2 | 0 |
| St. Joe Water Department | DeKalb County | 460 | Groundwater | 4 | 2 | 0 |
| Bruceville Water Utility | Knox County | 449 | Purchased groundwater | 1 | 2 | 0 |
| Westhaven MHP LLC | Kosciusko County | 417 | Groundwater | 3 | 2 | 0 |
| Wilfred Water Corporation | Sullivan County | 400 | Purchased groundwater | 0 | 2 | 0 |
| Royal Oaks Homeowners Assn., Inc. | White County | 390 | Groundwater | 0 | 2 | 0 |
| Neighbors of Westville Estates LLC | LaPorte County | 315 | Groundwater | 2 | 2 | 0 |
| J. B. Water Works, Inc. | LaPorte County | 307 | Groundwater | 1 | 2 | 0 |
| Silver Lake RV & Mobile Home Estates | Steuben County | 272 | Groundwater | 2 | 2 | 0 |
| Kingsbury Utility Corporation | LaPorte County | 240 | Groundwater | 0 | 2 | 0 |
Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations