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 ranks 29th among all U.S. states for total drinking water violations, out of 51 states tracked. The state has 18,261 EPA Safe Drinking Water Act violations on record across 771 water systems serving 423 cities. Of those, 1,720 are health-based violations, meaning a regulated contaminant was measured above the EPA-established safe level. Indiana's total violation count is 49% below the national average. Water systems in Indiana serve approximately 5,231,741 people. The most frequently cited contaminants in Indiana violations include Chlorine Dioxide, Disinfection Byproducts, E. coli, Selenium, Nitrate-Nitrite.
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 |
Water Quality in Other States
Alabama 13,972 violations Alaska 73,527 violations Arizona 60,414 violations Arkansas 17,031 violations California 39,276 violations Colorado 42,596 violations Connecticut 28,800 violations Delaware 1,242 violations District of Columbia 115 violations Florida 36,335 violations Georgia 32,159 violations Hawaii 182 violations Idaho 26,078 violations Illinois 30,544 violations Iowa 9,389 violations Kansas 19,480 violations Kentucky 9,427 violations Louisiana 32,039 violations Maine 6,830 violations Maryland 5,321 violations Massachusetts 10,561 violations Michigan 15,820 violations Minnesota 3,784 violations Mississippi 25,296 violations Missouri 25,377 violations Montana 20,202 violations Nebraska 5,134 violations Nevada 8,167 violations New Hampshire 6,968 violations New Jersey 19,332 violations New Mexico 37,115 violations New York 93,834 violations North Carolina 54,399 violations North Dakota 8,431 violations Ohio 61,604 violations Oklahoma 128,472 violations Oregon 0 violations Pennsylvania 199,265 violations Rhode Island 0 violations South Carolina 13,045 violations South Dakota 19,565 violations Tennessee 20,607 violations Texas 263,180 violations Utah 71,655 violations Vermont 12,362 violations Virginia 15,298 violations Washington 54,459 violations West Virginia 81,622 violations Wisconsin 18,533 violations Wyoming 13,783 violations
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.