Water Quality in Indiana
771 water systems • 423 cities • EPA SDWIS Data
771
Water Systems
18,261
Total Violations
1,720
Health-Based Violations
5,231,741
Population Served
Overview
Indiana has 771 active community water systems serving 5,231,741 people. These systems have accumulated 18,261 EPA Safe Drinking Water Act violations on record, of which 1,720 are health-based violations (meaning a contaminant exceeded safe levels).
Common contaminants found in violations: Chlorine Dioxide, Disinfection Byproducts, E. coli, Selenium, Nitrate-Nitrite, Stage 2 DBP, Nitrate, Gross Alpha, Chlorine, Total Haloacetic Acids (HAA5).
Cities with Most Violations in Indiana
| # | City | Violations | Health-Based | Water Systems | Population |
|---|---|---|---|---|---|
| 1 | Cedar Lake | 448 | 7 | 10 | 6,399 |
| 2 | Laporte | 402 | 11 | 3 | 22,596 |
| 3 | Greenfield | 399 | 16 | 5 | 28,598 |
| 4 | Zionsville | 305 | 11 | 2 | 207 |
| 5 | Bloomington | 272 | 122 | 10 | 105,850 |
| 6 | Durham | 247 | 9 | 5 | 620 |
| 7 | Cincinnati | 232 | 11 | 6 | 2,541 |
| 8 | Monticello | 220 | 23 | 7 | 6,078 |
| 9 | Scottsburg | 218 | 138 | 2 | 26,489 |
| 10 | Terre Haute | 217 | 2 | 5 | 3,298 |
Largest Cities in Indiana
| # | City | Population | Violations | Water Systems |
|---|---|---|---|---|
| 1 | Indianapolis | 1,007,040 | 181 | 20 |
| 2 | Greenwood | 867,939 | 99 | 32 |
| 3 | Fort Wayne | 284,575 | 145 | 4 |
| 4 | Evansville | 195,334 | 8 | 2 |
| 5 | South Bend | 115,025 | 25 | 2 |
| 6 | Bloomington | 105,850 | 272 | 10 |
| 7 | Carmel | 100,464 | 69 | 5 |
| 8 | Hammond | 78,384 | 20 | 1 |
| 9 | Lafayette | 71,220 | 34 | 4 |
| 10 | Anderson | 61,022 | 123 | 3 |
All Cities in Indiana
| City | Population | Violations | Health Violations | Contaminants |
|---|---|---|---|---|
| Indianapolis | 1,007,040 | 181 | 13 | Disinfection Byproducts, E. coli, Stage 2 DBP +1 more |
| Greenwood | 867,939 | 99 | 23 | Disinfection Byproducts, E. coli, Fecal Coliform +2 more |
| Fort Wayne | 284,575 | 145 | 5 | Disinfection Byproducts, Stage 2 DBP |
| Evansville | 195,334 | 8 | 2 | Gross Alpha |
| South Bend | 115,025 | 25 | 3 | Disinfection Byproducts, Stage 2 DBP |
| Bloomington | 105,850 | 272 | 122 | Chlorine, Chlorine Dioxide, Disinfection Byproducts +3 more |
| Carmel | 100,464 | 69 | 9 | Chlorine Dioxide, E. coli, Stage 2 DBP |
| Hammond | 78,384 | 20 | 2 | Disinfection Byproducts |
| Lafayette | 71,220 | 34 | 0 | |
| Anderson | 61,022 | 123 | 10 | Disinfection Byproducts, E. coli |
| Columbus | 59,774 | 9 | 0 | |
| West Lafayette | 50,000 | 3 | 0 | |
| Mishawaka | 49,820 | 11 | 1 | Disinfection Byproducts |
| Elkhart | 46,548 | 18 | 0 | |
| Plainfield | 39,013 | 39 | 4 | Disinfection Byproducts, Gross Alpha |
| Valparaiso | 38,541 | 74 | 0 | |
| Crown Point | 35,492 | 102 | 1 | Stage 2 DBP |
| Bargersville | 34,418 | 25 | 0 | |
| Michigan City | 34,296 | 12 | 2 | Disinfection Byproducts |
| Bedford | 33,625 | 63 | 3 | TTHM |
| Goshen | 32,267 | 5 | 0 | |
| Schererville | 30,000 | 1 | 0 | |
| Greenfield | 28,598 | 399 | 16 | Chlorine Dioxide, Disinfection Byproducts, E. coli |
| Marion | 28,363 | 1 | 0 | |
| Brownsburg | 27,863 | 8 | 1 | Disinfection Byproducts |
| Martinsville | 27,425 | 59 | 0 | |
| Scottsburg | 26,489 | 218 | 138 | E. coli, Gross Alpha, TTHM +1 more |
| East Chicago | 26,370 | 40 | 0 | |
| St. John | 25,700 | 0 | 0 | |
| Washington | 25,677 | 9 | 1 | Chlorine |
| Highland | 23,984 | 4 | 0 | |
| Munster | 23,894 | 8 | 0 | |
| Laporte | 22,596 | 402 | 11 | Chlorine, Chlorine Dioxide, Stage 2 DBP |
| Dubois | 22,581 | 3 | 0 | |
| Vincennes | 22,226 | 5 | 0 | |
| Newburgh | 22,215 | 0 | 0 | |
| North Vernon | 21,120 | 199 | 81 | Chlorine Dioxide, TTHM, Total Haloacetic Acids (HAA5) |
| New Castle | 21,102 | 21 | 2 | Disinfection Byproducts |
| Lawrenceburg | 20,964 | 17 | 2 | Chlorine Dioxide |
| Chandler | 20,120 | 3 | 0 | |
| Bloomfield | 19,028 | 1 | 0 | |
| Logansport | 18,369 | 2 | 0 | |
| Aurora | 17,815 | 56 | 8 | Disinfection Byproducts, Stage 2 DBP |
| Huntington | 17,786 | 82 | 11 | Chlorine Dioxide, Stage 2 DBP, TTHM |
| Greensburg | 17,590 | 154 | 26 | TTHM, Total Haloacetic Acids (HAA5) |
| Jasper | 17,440 | 1 | 0 | |
| Madison | 17,373 | 22 | 0 | |
| Griffith | 16,893 | 4 | 0 | |
| Salem | 16,813 | 162 | 103 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Dyer | 16,800 | 2 | 0 | |
| Frankfort | 16,538 | 9 | 0 | |
| Greencastle | 16,534 | 45 | 3 | Disinfection Byproducts, E. coli, Fecal Coliform |
| Ramsey | 16,475 | 0 | 0 | |
| Morgantown | 16,340 | 35 | 7 | Chlorine Dioxide, Disinfection Byproducts |
| Lebanon | 16,098 | 3 | 1 | Chlorine |
| Jeffersonville | 15,915 | 143 | 15 | Chlorine Dioxide, Disinfection Byproducts, E. coli +1 more |
| New Haven | 15,700 | 14 | 1 | Disinfection Byproducts |
| Sellersburg | 15,655 | 48 | 0 | |
| Connersville | 15,652 | 50 | 1 | E. coli |
| Corydon | 14,773 | 2 | 0 | |
| Brownstown | 14,747 | 20 | 0 | |
| Tell City | 14,646 | 81 | 0 | |
| Ellettsville | 14,500 | 14 | 8 | Total Haloacetic Acids (HAA5) |
| Boonville | 14,135 | 21 | 0 | |
| Peru | 13,977 | 25 | 2 | Stage 2 DBP |
| Taylorsville | 13,547 | 10 | 0 | |
| Auburn | 13,100 | 22 | 2 | Barium |
| Oakland City | 12,938 | 45 | 5 | Contaminant 2920, Stage 2 DBP |
| Demotte | 12,054 | 22 | 0 | |
| Brazil | 12,000 | 4 | 0 | |
| Patriot | 11,937 | 13 | 0 | |
| Borden | 11,637 | 21 | 18 | Contaminant 2920, Total Haloacetic Acids (HAA5) |
| Brookville | 11,525 | 17 | 0 | |
| Mitchell | 11,395 | 20 | 0 | |
| Greenville | 11,020 | 3 | 0 | |
| Princeton | 10,875 | 23 | 0 | |
| Milan | 10,640 | 25 | 9 | Chlorine, Chlorine Dioxide |
| Hanover | 10,597 | 8 | 0 | |
| Speedway | 10,578 | 109 | 0 | |
| Plymouth | 10,528 | 169 | 1 | E. coli |
| Danville | 10,500 | 1 | 0 | |
| Georgetown | 10,492 | 6 | 0 | |
| Clinton | 10,459 | 23 | 0 | |
| Linton | 10,322 | 15 | 1 | Disinfection Byproducts |
| Kendallville | 10,300 | 3 | 0 | |
| Bluffton | 10,298 | 2 | 0 | |
| Decatur | 10,110 | 9 | 2 | E. coli |
| Spencer | 9,903 | 8 | 0 | |
| Columbia City | 9,892 | 10 | 0 | |
| Angola | 9,782 | 102 | 2 | Disinfection Byproducts |
| Edinburgh | 9,780 | 9 | 2 | Disinfection Byproducts |
| Notre Dame | 9,511 | 11 | 1 | E. coli |
| Harrodsburg | 8,877 | 3 | 2 | Total Haloacetic Acids (HAA5) |
| Elwood | 8,586 | 2 | 2 | Chlorine Dioxide |
| Henryville | 8,250 | 9 | 4 | Disinfection Byproducts, Stage 2 DBP |
| Mooresville | 8,200 | 2 | 0 | |
| Fortville | 7,638 | 8 | 1 | Disinfection Byproducts |
| Ingalls | 7,600 | 2 | 0 | |
| Nineveh | 7,520 | 29 | 0 | |
| Huntingburg | 7,351 | 41 | 13 | Total Haloacetic Acids (HAA5) |
| Batesville | 7,280 | 2 | 0 | |
| Nappanee | 6,875 | 70 | 7 | Disinfection Byproducts, E. coli, Nitrate-Nitrite +1 more |
| Marysville | 6,813 | 8 | 1 | Disinfection Byproducts |
| Rushville | 6,800 | 25 | 1 | E. coli |
| Garrett | 6,556 | 19 | 2 | Disinfection Byproducts, Stage 2 DBP |
| Crane | 6,538 | 2 | 2 | E. coli |
| Mount Vernon | 6,426 | 33 | 0 | |
| Cedar Lake | 6,399 | 448 | 7 | Disinfection Byproducts, Gross Alpha |
| Seelyville | 6,393 | 4 | 0 | |
| Haubstadt | 6,375 | 28 | 11 | TTHM |
| Yorktown | 6,248 | 40 | 1 | Stage 2 DBP |
| Rochester | 6,218 | 7 | 1 | Stage 2 DBP |
| Ferdinand | 6,211 | 9 | 0 | |
| Portland | 6,209 | 2 | 0 | |
| Rensselaer | 6,200 | 1 | 0 | |
| Hamilton | 6,104 | 26 | 4 | Chlorine Dioxide, Disinfection Byproducts, Stage 2 DBP |
| North Manchester | 6,100 | 5 | 0 | |
| Monticello | 6,078 | 220 | 23 | Chlorine Dioxide, Disinfection Byproducts, E. coli +2 more |
| Gas City | 6,000 | 19 | 2 | Chlorine Dioxide |
| Whiteland | 5,955 | 17 | 1 | Disinfection Byproducts |
| Whitestown | 5,880 | 14 | 5 | Total Haloacetic Acids (HAA5) |
| Orleans | 5,819 | 10 | 0 | |
| West Harrison | 5,775 | 2 | 0 | |
| Centerpoint | 5,768 | 70 | 3 | Stage 2 DBP |
| Pendleton | 5,758 | 11 | 4 | Chlorine |
| Westville | 5,749 | 35 | 3 | Disinfection Byproducts |
| Cicero | 5,720 | 54 | 13 | E. coli, Gross Alpha |
| Hartford City | 5,600 | 3 | 0 | |
| Napoleon | 5,564 | 12 | 12 | Total Haloacetic Acids (HAA5) |
| Hobart | 5,500 | 8 | 2 | Disinfection Byproducts |
| Cloverdale | 5,440 | 10 | 0 | |
| Tipton | 5,200 | 1 | 0 | |
| Alexandria | 5,149 | 10 | 0 | |
| Greendale | 5,092 | 4 | 0 | |
| Milton | 4,908 | 74 | 4 | Disinfection Byproducts, Stage 2 DBP |
| Whiting | 4,900 | 4 | 1 | Disinfection Byproducts |
| Ligonier | 4,755 | 10 | 0 | |
| Bremen | 4,623 | 63 | 6 | Disinfection Byproducts, E. coli, Stage 2 DBP |
| Elizabeth | 4,450 | 12 | 1 | Disinfection Byproducts |
| Nashville | 4,440 | 38 | 0 | |
| Canaan | 4,428 | 3 | 0 | |
| Paoli | 4,425 | 11 | 0 | |
| Ireland | 4,395 | 2 | 0 | |
| Loogootee | 4,389 | 37 | 0 | |
| Berne | 4,388 | 2 | 0 | |
| North Judson | 4,353 | 20 | 1 | Disinfection Byproducts |
| New Washington | 4,315 | 69 | 0 | |
| Walkerton | 4,218 | 16 | 0 | |
| Rockville | 4,195 | 7 | 0 | |
| Tennyson | 4,158 | 7 | 4 | Total Haloacetic Acids (HAA5) |
| Holton | 4,147 | 18 | 0 | |
| Bicknell | 4,064 | 62 | 0 | |
| Fort Branch | 4,020 | 17 | 2 | Stage 2 DBP |
| Commiskey | 3,865 | 25 | 0 | |
| Hebron | 3,724 | 8 | 0 | |
| Knox | 3,700 | 8 | 1 | E. coli |
| Santa Claus | 3,683 | 3 | 0 | |
| Ossian | 3,664 | 5 | 0 | |
| Jasonville | 3,660 | 11 | 3 | Disinfection Byproducts, Fecal Coliform |
| Union City | 3,513 | 1 | 0 | |
| Hardinsburg | 3,500 | 16 | 7 | Total Haloacetic Acids (HAA5) |
| Chrisney | 3,495 | 44 | 0 | |
| Shoals | 3,485 | 3 | 0 | |
| Middlebury | 3,420 | 9 | 1 | Disinfection Byproducts |
| Waterloo | 3,393 | 61 | 22 | Barium, Chlorine Dioxide, E. coli +1 more |
| Culver | 3,331 | 12 | 1 | Disinfection Byproducts |
| Lagrange | 3,325 | 131 | 0 | |
| Upland | 3,308 | 6 | 0 | |
| Terre Haute | 3,298 | 217 | 2 | Stage 2 DBP |
| Delphi | 3,200 | 144 | 1 | Disinfection Byproducts |
| French Lick | 3,188 | 6 | 0 | |
| Attica | 3,147 | 32 | 0 | |
| Carlisle | 3,125 | 7 | 1 | Stage 2 DBP |
| Camby | 3,078 | 6 | 0 | |
| Dunkirk | 3,011 | 26 | 1 | Disinfection Byproducts |
| Dugger | 2,859 | 13 | 2 | Disinfection Byproducts |
| Syracuse | 2,856 | 20 | 0 | |
| Knightstown | 2,836 | 19 | 1 | Disinfection Byproducts |
| Otwell | 2,805 | 23 | 7 | Total Haloacetic Acids (HAA5) |
| Chesterfield | 2,800 | 4 | 0 | |
| Reelsville | 2,800 | 4 | 0 | |
| Pimento | 2,765 | 14 | 0 | |
| Fairmount | 2,756 | 7 | 0 | |
| Roachdale | 2,710 | 32 | 1 | Stage 2 DBP |
| Avilla | 2,700 | 1 | 0 | |
| Marengo | 2,678 | 1 | 0 | |
| Covington | 2,645 | 1 | 0 | |
| Cincinnati | 2,541 | 232 | 11 | Disinfection Byproducts, E. coli, Stage 2 DBP +2 more |
| Rockport | 2,520 | 10 | 2 | Chlorine Dioxide |
| Winamac | 2,510 | 24 | 1 | E. coli |
| Greentown | 2,500 | 22 | 0 | |
| Shelburn | 2,500 | 27 | 0 | |
| Rising Sun | 2,400 | 0 | 0 | |
| Lapel | 2,379 | 27 | 5 | Chlorine, Disinfection Byproducts |
| Albion | 2,349 | 2 | 1 | Chlorine |
| Fowler | 2,342 | 9 | 0 | |
| Wingate | 2,299 | 2 | 0 | |
| New Carlisle | 2,245 | 88 | 11 | TTHM, Total Haloacetic Acids (HAA5) |
| Liberty | 2,167 | 13 | 0 | |
| Albany | 2,165 | 9 | 0 | |
| Pekin | 2,150 | 15 | 12 | TTHM |
| Owensville | 2,148 | 0 | 0 | |
| Fremont | 2,138 | 3 | 0 | |
| Elberfeld | 2,122 | 2 | 1 | Total Haloacetic Acids (HAA5) |
| Hope | 2,113 | 3 | 0 | |
| Flora | 2,100 | 0 | 0 | |
| St. Joe | 2,076 | 15 | 0 | |
| Middleton | 2,050 | 5 | 0 | |
| Long Beach | 2,050 | 5 | 0 | |
| Bristol | 2,043 | 115 | 1 | Stage 2 DBP |
| Jonesboro | 2,034 | 22 | 0 | |
| Kentland | 2,030 | 42 | 0 | |
| Kouts | 2,028 | 3 | 0 | |
| Paxton | 2,013 | 0 | 0 | |
| Birdseye | 2,010 | 50 | 4 | Disinfection Byproducts, E. coli, TTHM |
| Milltown | 2,000 | 6 | 1 | Chlorine |
| Dillsboro | 2,000 | 3 | 0 | |
| Wakarusa | 1,998 | 2 | 1 | Disinfection Byproducts |
| Battle Ground | 1,940 | 7 | 3 | Chlorine Dioxide |
| Cambridge City | 1,925 | 7 | 0 | |
| Vevay | 1,883 | 14 | 0 | |
| Crothersville | 1,875 | 35 | 0 | |
| Roanoke | 1,840 | 13 | 0 | |
| Williamsport | 1,837 | 68 | 6 | Chlorine |
| South Whitley | 1,818 | 13 | 0 | |
| Brookston | 1,815 | 4 | 0 | |
| St. Anthony | 1,813 | 4 | 0 | |
| Rosedale | 1,810 | 86 | 12 | Chlorine, Chlorine Dioxide, Stage 2 DBP |
| Monon | 1,804 | 60 | 0 | |
| Churubusco | 1,803 | 3 | 1 | Chlorine |
| Montpelier | 1,800 | 4 | 0 | |
| Kingsford Heights | 1,800 | 6 | 0 | |
| Frankton | 1,800 | 7 | 0 | |
| Brooklyn | 1,775 | 111 | 6 | Gross Alpha |
| Southfield | 1,774 | 24 | 0 | |
| Bourbon | 1,767 | 1 | 0 | |
| Troy | 1,723 | 48 | 3 | Chlorine, Chlorine Dioxide |
| Odon | 1,703 | 6 | 1 | Disinfection Byproducts |
| Hagerstown | 1,700 | 12 | 1 | Stage 2 DBP |
| Osgood | 1,692 | 7 | 0 | |
| Warren | 1,688 | 16 | 2 | Chlorine Dioxide |
| Argos | 1,680 | 28 | 2 | Disinfection Byproducts |
| Freelandville | 1,663 | 195 | 7 | Carbon Tetrachloride, Chlorine, Stage 2 DBP |
| Cannelton | 1,658 | 7 | 0 | |
| Rossville | 1,653 | 9 | 0 | |
| Dale | 1,637 | 14 | 0 | |
| Harlan | 1,634 | 18 | 0 | |
| New Harmony | 1,633 | 11 | 0 | |
| Gentryville | 1,625 | 9 | 1 | Disinfection Byproducts |
| Seymour | 1,621 | 22 | 1 | Stage 2 DBP |
| Woodburn | 1,609 | 4 | 0 | |
| Thorntown | 1,600 | 5 | 0 | |
| Eaton | 1,595 | 19 | 0 | |
| Milford | 1,586 | 134 | 0 | |
| Daleville | 1,585 | 19 | 1 | Disinfection Byproducts |
| Pierceton | 1,522 | 111 | 29 | Barium, Chlorine Dioxide, Disinfection Byproducts +1 more |
| Arcadia | 1,515 | 5 | 0 | |
| Trafalgar | 1,490 | 19 | 0 | |
| Dayton | 1,420 | 8 | 0 | |
| Montgomery | 1,410 | 14 | 0 | |
| Monroeville | 1,400 | 11 | 1 | Disinfection Byproducts |
| Poseyville | 1,400 | 39 | 29 | Selenium |
| Parker | 1,400 | 9 | 1 | Chlorine |
| Geneva | 1,359 | 12 | 0 | |
| Morocco | 1,330 | 22 | 2 | TTHM |
| Wanatah | 1,327 | 79 | 2 | E. coli |
| Redkey | 1,323 | 6 | 0 | |
| Farmland | 1,301 | 18 | 0 | |
| Westport | 1,300 | 198 | 55 | TTHM |
| Converse | 1,265 | 41 | 1 | Disinfection Byproducts |
| Otterbein | 1,262 | 9 | 0 | |
| Galveston | 1,258 | 9 | 0 | |
| Mulberry | 1,252 | 5 | 0 | |
| Morristown | 1,218 | 4 | 1 | Disinfection Byproducts |
| Akron | 1,206 | 8 | 1 | Disinfection Byproducts |
| Oxford | 1,200 | 11 | 0 | |
| Holland | 1,200 | 4 | 2 | Total Haloacetic Acids (HAA5) |
| Lynnville | 1,200 | 28 | 18 | Disinfection Byproducts, Total Haloacetic Acids (HAA5) |
| Remington | 1,182 | 69 | 5 | Disinfection Byproducts |
| Ladoga | 1,180 | 5 | 0 | |
| Topeka | 1,178 | 2 | 0 | |
| Cromwell | 1,164 | 85 | 2 | Disinfection Byproducts |
| Grabill | 1,163 | 29 | 8 | Disinfection Byproducts |
| Cayuga | 1,162 | 3 | 0 | |
| Clay City | 1,152 | 19 | 1 | Stage 2 DBP |
| Andrews | 1,149 | 57 | 1 | Stage 2 DBP |
| Brook | 1,126 | 45 | 0 | |
| Ogden Dunes | 1,110 | 29 | 1 | Stage 2 DBP |
| Farmington Hills | 1,099 | 64 | 9 | Disinfection Byproducts, E. coli, Stage 2 DBP |
| Lynn | 1,097 | 11 | 0 | |
| Arlington | 1,096 | 96 | 4 | Chlorine, Chlorine Dioxide |
| Markle | 1,095 | 5 | 0 | |
| Carbon | 1,088 | 9 | 0 | |
| Sunman | 1,058 | 9 | 0 | |
| Walton | 1,040 | 9 | 0 | |
| Silver Lake | 1,030 | 11 | 0 | |
| Montezuma | 1,022 | 47 | 29 | Selenium |
| Winslow | 1,010 | 50 | 0 | |
| Lanesville | 1,009 | 9 | 1 | Stage 2 DBP |
| Mentone | 1,001 | 14 | 0 | |
| Wolcott | 1,001 | 17 | 0 | |
| Jamestown | 1,000 | 4 | 0 | |
| Goodland | 990 | 13 | 0 | |
| Hymera | 984 | 5 | 0 | |
| Ashley | 983 | 5 | 0 | |
| Swayzee | 975 | 63 | 0 | |
| Spiceland | 969 | 4 | 0 | |
| Francesville | 969 | 16 | 2 | Chlorine |
| Shirley | 960 | 7 | 1 | Disinfection Byproducts |
| Millersburg | 957 | 8 | 0 | |
| Waynetown | 953 | 3 | 0 | |
| Chalmers | 910 | 65 | 6 | Barium, Disinfection Byproducts |
| Lafontaine | 906 | 6 | 0 | |
| Francisco | 900 | 6 | 0 | |
| Bunker Hill | 900 | 2 | 0 | |
| Milroy | 900 | 4 | 0 | |
| St. Mary of the Woods | 900 | 1 | 0 | |
| Campbellsburg | 900 | 7 | 0 | |
| English | 886 | 11 | 0 | |
| Oldenburg | 880 | 45 | 1 | Stage 2 DBP |
| Medora | 873 | 1 | 0 | |
| Monroe | 872 | 1 | 0 | |
| Lyons | 870 | 18 | 5 | Disinfection Byproducts, Stage 2 DBP |
| Hillsdale | 870 | 17 | 4 | Chlorine Dioxide, Stage 2 DBP |
| Van Buren | 864 | 20 | 3 | Disinfection Byproducts, TTHM |
| Royal Center | 861 | 8 | 0 | |
| Gaston | 838 | 78 | 0 | |
| Farmersburg | 832 | 14 | 0 | |
| Bainbridge | 830 | 14 | 1 | Stage 2 DBP |
| Ridgeville | 825 | 36 | 0 | |
| Monroe City | 813 | 6 | 5 | Disinfection Byproducts |
| Hamlet | 801 | 12 | 0 | |
| Waldron | 800 | 3 | 0 | |
| Kirklin | 788 | 20 | 14 | TTHM, Total Haloacetic Acids (HAA5) |
| New Market | 765 | 7 | 1 | Stage 2 DBP |
| Grandview | 765 | 5 | 0 | |
| Linden | 759 | 103 | 2 | Disinfection Byproducts |
| Boswell | 750 | 36 | 0 | |
| Patoka | 750 | 15 | 1 | Stage 2 DBP |
| Lakeville | 750 | 4 | 0 | |
| St. Bernice | 750 | 9 | 2 | Disinfection Byproducts |
| Atlanta | 735 | 12 | 1 | Disinfection Byproducts |
| West Lebanon | 723 | 11 | 0 | |
| Shipshewana | 703 | 5 | 0 | |
| Cynthiana | 699 | 1 | 0 | |
| Colfax | 690 | 4 | 2 | Disinfection Byproducts |
| Donaldson | 680 | 13 | 0 | |
| Kewanna | 678 | 3 | 0 | |
| Etna Green | 663 | 23 | 0 | |
| Paragon | 663 | 4 | 0 | |
| Clarks Hill | 660 | 10 | 0 | |
| Dana | 660 | 46 | 1 | Stage 2 DBP |
| St. Meinrad | 658 | 2 | 0 | |
| Durham | 620 | 247 | 9 | Chlorine Dioxide, E. coli |
| Elnora | 620 | 14 | 0 | |
| Medaryville | 614 | 32 | 0 | |
| Camden | 611 | 0 | 0 | |
| Lapeer | 608 | 172 | 7 | Chlorine Dioxide, Disinfection Byproducts, E. coli +1 more |
| West Covina | 598 | 7 | 0 | |
| Hudson | 564 | 75 | 2 | Barium |
| Bloomingdale | 562 | 50 | 11 | Chlorine Dioxide, Disinfection Byproducts, Selenium +1 more |
| Kingman | 560 | 73 | 64 | Barium, Disinfection Byproducts |
| Laurel | 560 | 162 | 15 | Chlorine Dioxide |
| Noblesville | 556 | 11 | 0 | |
| Sharpsville | 553 | 205 | 0 | |
| Hillsboro | 540 | 10 | 2 | Stage 2 DBP |
| Vernon | 538 | 52 | 8 | E. coli, TTHM |
| Reynolds | 533 | 16 | 0 | |
| Orland | 530 | 8 | 0 | |
| North Salem | 515 | 5 | 0 | |
| Fillmore | 510 | 2 | 0 | |
| Advance | 500 | 7 | 0 | |
| Newport | 495 | 23 | 1 | Stage 2 DBP |
| Lizton | 488 | 26 | 3 | Disinfection Byproducts |
| Englewood | 477 | 92 | 10 | Barium, Chlorine Dioxide, Stage 2 DBP |
| Wheatland | 474 | 88 | 0 | |
| Dallas | 470 | 15 | 0 | |
| Perrysville | 470 | 40 | 15 | Barium |
| Losantville | 450 | 17 | 0 | |
| Bruceville | 449 | 16 | 1 | Stage 2 DBP |
| Sandborn | 449 | 18 | 1 | Stage 2 DBP |
| Kokomo | 448 | 105 | 5 | Chlorine, E. coli, Stage 2 DBP |
| Wabash | 441 | 7 | 1 | Disinfection Byproducts |
| Lagro | 438 | 1 | 0 | |
| Spurgeon | 430 | 6 | 2 | Stage 2 DBP |
| Russellville | 405 | 37 | 0 | |
| Orestes | 400 | 10 | 0 | |
| Roann | 400 | 4 | 2 | Gross Alpha |
| Orem | 390 | 4 | 1 | Stage 2 DBP |
| St. Petersburg | 362 | 5 | 0 | |
| Mt. Summit | 350 | 71 | 0 | |
| New Richmond | 330 | 9 | 3 | Disinfection Byproducts |
| Marshall | 330 | 6 | 0 | |
| Glenwood | 313 | 39 | 36 | TTHM, Total Haloacetic Acids (HAA5) |
| Earl Park | 300 | 47 | 0 | |
| Hazleton | 288 | 12 | 0 | |
| Decker | 273 | 21 | 0 | |
| Pontiac | 272 | 13 | 3 | E. coli, Stage 2 DBP |
| Lake Village | 270 | 18 | 1 | Stage 2 DBP |
| Westfield | 267 | 22 | 1 | E. coli |
| Schneider | 267 | 52 | 1 | Selenium |
| Corunna | 255 | 7 | 0 | |
| Ambia | 250 | 54 | 8 | Chlorine Dioxide |
| Grantsburg | 250 | 28 | 1 | Stage 2 DBP |
| Worthington | 249 | 6 | 2 | Disinfection Byproducts |
| Kingsbury | 240 | 21 | 0 | |
| Leavenworth | 233 | 4 | 0 | |
| Mather | 232 | 6 | 0 | |
| Rolling Prairie | 231 | 85 | 2 | Chlorine Dioxide, Stage 2 DBP |
| Russiaville | 230 | 29 | 2 | Disinfection Byproducts |
| Clearwater | 215 | 46 | 0 | |
| Ojai | 213 | 178 | 1 | E. coli |
| Lowell | 210 | 43 | 2 | Stage 2 DBP |
| Zionsville | 207 | 305 | 11 | Chlorine Dioxide, E. coli, Gross Alpha +1 more |
| Leo | 182 | 0 | 0 | |
| Ada | 165 | 130 | 0 | |
| Warsaw | 162 | 70 | 14 | Barium, E. coli, Gross Alpha |
| Louisville | 140 | 12 | 4 | Nitrate-Nitrite, Selenium, Stage 2 DBP |
| Shelbyville | 138 | 6 | 0 | |
| Leesburg | 129 | 96 | 3 | Disinfection Byproducts, E. coli, Gross Alpha |
| New York | 128 | 9 | 0 | |
| Muncie | 126 | 5 | 0 | |
| Richmond | 104 | 153 | 3 | Stage 2 DBP |
Data Sources
Drinking water data from the EPA Safe Drinking Water Information System (SDWIS). Only active community water systems (CWS) serving 100+ people are included.