Water Quality in Kansas
856 water systems • 499 cities • EPA SDWIS Data
856
Water Systems
19,480
Total Violations
3,703
Health-Based Violations
2,869,691
Population Served
Overview
Kansas has 856 active community water systems serving 2,869,691 people. These systems have accumulated 19,480 EPA Safe Drinking Water Act violations on record, of which 3,703 are health-based violations (meaning a contaminant exceeded safe levels).
Common contaminants found in violations: Nitrate, E. coli, Stage 2 DBP, Total Haloacetic Acids (HAA5), TTHM, Contaminant 2920, Chlorine Dioxide, Selenium, Disinfection Byproducts, HAA5.
Cities with Most Violations in Kansas
| # | City | Violations | Health-Based | Water Systems | Population |
|---|---|---|---|---|---|
| 1 | Garden City | 456 | 93 | 11 | 41,432 |
| 2 | Hays | 290 | 12 | 7 | 22,261 |
| 3 | Tescott | 273 | 0 | 1 | 271 |
| 4 | Fredonia | 251 | 52 | 8 | 4,687 |
| 5 | Erie | 243 | 10 | 3 | 1,835 |
| 6 | Beloit | 220 | 160 | 3 | 5,800 |
| 7 | Severy | 202 | 137 | 1 | 200 |
| 8 | Elk City | 194 | 142 | 1 | 292 |
| 9 | Hutchinson | 193 | 21 | 5 | 41,022 |
| 10 | Sedan | 185 | 34 | 6 | 1,872 |
Largest Cities in Kansas
| # | City | Population | Violations | Water Systems |
|---|---|---|---|---|
| 1 | Kansas City | 634,960 | 22 | 2 |
| 2 | Wichita | 395,699 | 3 | 1 |
| 3 | Olathe | 143,014 | 13 | 1 |
| 4 | Topeka | 141,838 | 134 | 5 |
| 5 | Lawrence | 137,435 | 30 | 7 |
| 6 | Manhattan | 57,785 | 50 | 7 |
| 7 | Salina | 49,043 | 35 | 3 |
| 8 | Leavenworth | 42,520 | 68 | 4 |
| 9 | Garden City | 41,432 | 456 | 11 |
| 10 | Hutchinson | 41,022 | 193 | 5 |
All Cities in Kansas
| City | Population | Violations | Health Violations | Contaminants |
|---|---|---|---|---|
| Kansas City | 634,960 | 22 | 0 | |
| Wichita | 395,699 | 3 | 0 | |
| Olathe | 143,014 | 13 | 0 | |
| Topeka | 141,838 | 134 | 71 | Chlorine Dioxide, Disinfection Byproducts, Total Haloacetic Acids (HAA5) |
| Lawrence | 137,435 | 30 | 0 | |
| Manhattan | 57,785 | 50 | 4 | Disinfection Byproducts, E. coli |
| Salina | 49,043 | 35 | 0 | |
| Leavenworth | 42,520 | 68 | 0 | |
| Garden City | 41,432 | 456 | 93 | Chlorine Dioxide, Haloacetic Acids |
| Hutchinson | 41,022 | 193 | 21 | Chlorine Dioxide, E. coli, Selenium |
| Fort Riley | 35,784 | 6 | 3 | TTHM |
| Gardner | 30,399 | 10 | 0 | |
| Emporia | 28,743 | 59 | 18 | Contaminant 1011, Disinfection Byproducts, E. coli +2 more |
| Dodge City | 27,104 | 10 | 3 | Selenium |
| Derby | 25,413 | 24 | 0 | |
| Pittsburg | 23,521 | 33 | 0 | |
| Hays | 22,261 | 290 | 12 | Chlorine, Chlorine Dioxide, E. coli +1 more |
| Junction City | 21,124 | 69 | 28 | Gross Alpha, TTHM |
| Liberal | 19,770 | 25 | 0 | |
| Newton | 18,434 | 11 | 2 | Disinfection Byproducts |
| Arkansas City | 17,878 | 78 | 1 | Chlorine Dioxide |
| El Dorado | 17,781 | 124 | 10 | Contaminant 2920, Total Haloacetic Acids (HAA5) |
| Great Bend | 16,124 | 95 | 13 | Selenium |
| Paola | 16,097 | 35 | 5 | E. coli, Gross Alpha |
| Fort Scott | 14,563 | 15 | 0 | |
| Ottawa | 14,524 | 30 | 12 | TTHM, Total Haloacetic Acids (HAA5) |
| Mcpherson | 14,158 | 12 | 0 | |
| Winfield | 13,176 | 81 | 0 | |
| Fort Leavenworth | 12,934 | 1 | 0 | |
| Mulvane | 12,682 | 49 | 3 | Chlorine Dioxide |
| Atchison | 11,964 | 103 | 6 | Contaminant 2920, E. coli, Total Haloacetic Acids (HAA5) |
| Haysville | 11,315 | 3 | 1 | Chlorine Dioxide |
| Chanute | 11,126 | 58 | 3 | Total Haloacetic Acids (HAA5) |
| Bonner Springs | 10,805 | 18 | 2 | Disinfection Byproducts |
| Independence | 9,779 | 50 | 2 | Disinfection Byproducts |
| Parsons | 9,661 | 41 | 21 | Total Haloacetic Acids (HAA5) |
| Augusta | 9,267 | 4 | 0 | |
| Coffeyville | 9,177 | 39 | 11 | Bromate, E. coli, TTHM +1 more |
| Valley Center | 8,879 | 28 | 0 | |
| Wellington | 8,532 | 70 | 5 | TTHM |
| Park City | 8,504 | 38 | 0 | |
| Bel Aire | 8,448 | 16 | 0 | |
| Abilene | 8,227 | 27 | 1 | Disinfection Byproducts |
| Tonganoxie | 8,052 | 47 | 4 | Disinfection Byproducts |
| Goddard | 7,952 | 21 | 0 | |
| Basehor | 7,900 | 22 | 0 | |
| Baldwin City | 7,882 | 21 | 0 | |
| Holton | 7,706 | 27 | 3 | TTHM |
| Saint George | 7,535 | 2 | 0 | |
| Benton | 7,403 | 21 | 0 | |
| Lansing | 7,302 | 2 | 0 | |
| Osawatomie | 6,715 | 101 | 48 | Contaminant 2920, E. coli, TTHM +1 more |
| Pratt | 6,573 | 9 | 6 | Selenium |
| Garnett | 6,541 | 101 | 11 | Contaminant 2920, TTHM, Total Haloacetic Acids (HAA5) |
| Eudora | 6,449 | 3 | 0 | |
| Ulysses | 6,410 | 2 | 0 | |
| Wamego | 6,260 | 64 | 2 | Disinfection Byproducts |
| Ellsworth | 6,120 | 99 | 18 | Bromate, Contaminant 1008, Contaminant 2920 +1 more |
| Tecumseh | 6,073 | 17 | 3 | Total Haloacetic Acids (HAA5) |
| Maize | 6,060 | 0 | 0 | |
| Mcconnell Afb | 6,009 | 5 | 0 | |
| Girard | 5,992 | 43 | 3 | Total Organic Carbon |
| Beloit | 5,800 | 220 | 160 | TTHM, Total Haloacetic Acids (HAA5) |
| Baxter Springs | 5,752 | 48 | 16 | HAA5, TTHM |
| Spring Hill | 5,694 | 5 | 0 | |
| Iola | 5,576 | 79 | 2 | E. coli |
| Larned | 5,521 | 24 | 0 | |
| Colby | 5,516 | 25 | 0 | |
| Concordia | 5,505 | 40 | 0 | |
| Eureka | 5,236 | 43 | 0 | |
| Desoto | 5,095 | 30 | 4 | Chlorine Dioxide, Disinfection Byproducts |
| Louisburg | 4,995 | 8 | 0 | |
| Overbrook | 4,982 | 81 | 21 | Chlorine Dioxide, Disinfection Byproducts, TTHM |
| Seneca | 4,930 | 6 | 2 | Disinfection Byproducts |
| Fredonia | 4,687 | 251 | 52 | Contaminant 1006, E. coli, TTHM +2 more |
| Berryton | 4,663 | 15 | 1 | TTHM |
| Russell | 4,462 | 60 | 11 | Contaminant 1008, E. coli, TTHM |
| Goodland | 4,450 | 9 | 0 | |
| Columbus | 4,383 | 101 | 5 | Contaminant 1009 |
| Rose Hill | 4,344 | 67 | 11 | Chlorine Dioxide |
| Osage City | 4,239 | 8 | 0 | |
| Clay Center | 4,189 | 24 | 1 | Disinfection Byproducts |
| Auburn | 4,160 | 28 | 22 | Total Haloacetic Acids (HAA5) |
| Hillsboro | 4,138 | 79 | 12 | Disinfection Byproducts, TTHM, Total Haloacetic Acids (HAA5) |
| Winchester | 4,085 | 14 | 0 | |
| Lindsborg | 3,996 | 21 | 0 | |
| Lancaster | 3,938 | 30 | 0 | |
| Frontenac | 3,825 | 31 | 14 | Total Organic Carbon |
| Hugoton | 3,764 | 3 | 0 | |
| Scott City | 3,748 | 27 | 8 | Barium |
| Altamont | 3,742 | 29 | 0 | |
| Lyons | 3,556 | 46 | 3 | Disinfection Byproducts, E. coli |
| Kechi | 3,536 | 16 | 0 | |
| Valley Falls | 3,521 | 36 | 7 | Chlorine Dioxide, TTHM |
| Ellis | 3,501 | 25 | 8 | TTHM |
| Hesston | 3,495 | 2 | 1 | Disinfection Byproducts |
| Cherryvale | 3,456 | 28 | 0 | |
| Marysville | 3,417 | 7 | 0 | |
| Hiawatha | 3,354 | 66 | 24 | Chlorine Dioxide, Selenium |
| Belleville | 3,314 | 65 | 53 | Disinfection Byproducts, Selenium |
| Walton | 3,217 | 53 | 4 | Chlorine Dioxide |
| Burlingame | 3,195 | 38 | 0 | |
| Rantoul | 3,128 | 17 | 2 | TTHM, Total Haloacetic Acids (HAA5) |
| Hoyt | 3,099 | 11 | 0 | |
| Riverton | 3,078 | 24 | 0 | |
| Kingman | 3,062 | 5 | 0 | |
| La Cygne | 3,029 | 90 | 9 | Contaminant 1008, E. coli, TTHM +1 more |
| Towanda | 3,010 | 48 | 2 | Total Haloacetic Acids (HAA5) |
| South Hutchinson | 2,958 | 40 | 27 | Selenium |
| Arma | 2,866 | 18 | 0 | |
| Troy | 2,839 | 42 | 3 | Chlorine Dioxide, Disinfection Byproducts |
| St Marys | 2,781 | 9 | 0 | |
| Phillipsburg | 2,774 | 53 | 3 | Barium |
| Norton | 2,758 | 36 | 16 | Disinfection Byproducts, E. coli, TTHM |
| Galena | 2,743 | 12 | 0 | |
| Neodesha | 2,724 | 122 | 17 | TTHM, Total Haloacetic Acids (HAA5) |
| Gridley | 2,712 | 29 | 3 | TTHM |
| Humboldt | 2,697 | 81 | 4 | Stage 2 DBP, Total Haloacetic Acids (HAA5) |
| Williamsburg | 2,671 | 19 | 3 | Total Haloacetic Acids (HAA5) |
| Hoisington | 2,657 | 58 | 0 | |
| Burlington | 2,641 | 6 | 1 | TTHM |
| Mound City | 2,639 | 42 | 3 | Contaminant 2920, Disinfection Byproducts |
| Clearwater | 2,626 | 38 | 1 | Disinfection Byproducts |
| Conway Springs | 2,535 | 102 | 23 | Disinfection Byproducts, Selenium |
| Sabetha | 2,519 | 20 | 2 | Contaminant 2920 |
| Burden | 2,514 | 13 | 2 | Disinfection Byproducts |
| Halstead | 2,505 | 27 | 2 | Chlorine Dioxide |
| Colony | 2,470 | 13 | 4 | Total Haloacetic Acids (HAA5) |
| Havana | 2,450 | 11 | 1 | Total Haloacetic Acids (HAA5) |
| Anthony | 2,368 | 55 | 0 | |
| Meriden | 2,343 | 25 | 1 | Disinfection Byproducts |
| Herington | 2,332 | 31 | 21 | TTHM |
| Sterling | 2,318 | 5 | 0 | |
| New Strawn | 2,315 | 6 | 1 | TTHM |
| Marion | 2,311 | 34 | 2 | Disinfection Byproducts |
| Oskaloosa | 2,266 | 19 | 2 | Disinfection Byproducts |
| Galesburg | 2,242 | 45 | 6 | TTHM, Total Haloacetic Acids (HAA5) |
| Holcomb | 2,228 | 17 | 1 | Chlorine Dioxide |
| Ellinwood | 2,209 | 140 | 2 | E. coli |
| Cheney | 2,170 | 6 | 1 | Disinfection Byproducts |
| Lakin | 2,166 | 13 | 0 | |
| Minneapolis | 2,146 | 54 | 6 | Disinfection Byproducts, E. coli |
| Plainville | 2,142 | 69 | 49 | Chlorine Dioxide, Disinfection Byproducts, Selenium +1 more |
| Council Grove | 2,136 | 34 | 6 | Contaminant 2920, Fecal Coliform |
| Onaga | 2,126 | 9 | 0 | |
| Whitewater | 2,121 | 53 | 19 | Total Haloacetic Acids (HAA5) |
| Ozawkie | 2,114 | 84 | 5 | Chlorine Dioxide, E. coli |
| Oakley | 2,026 | 31 | 26 | Selenium |
| Dwight | 2,003 | 16 | 0 | |
| Cimarron | 1,973 | 14 | 0 | |
| Oswego | 1,965 | 95 | 24 | Contaminant 1009, E. coli, Gross Alpha +2 more |
| Moundridge | 1,958 | 9 | 0 | |
| Smith Center | 1,952 | 9 | 0 | |
| Wellsville | 1,933 | 10 | 2 | Bromate, Disinfection Byproducts |
| Edna | 1,933 | 21 | 10 | E. coli, TTHM |
| Elkhart | 1,884 | 2 | 0 | |
| Sedan | 1,872 | 185 | 34 | Chlorine Dioxide, Contaminant 2920, Total Haloacetic Acids (HAA5) |
| Mound Valley | 1,860 | 35 | 1 | Disinfection Byproducts |
| Assaria | 1,837 | 31 | 0 | |
| Erie | 1,835 | 243 | 10 | TTHM, Total Haloacetic Acids (HAA5) |
| North Newton | 1,829 | 13 | 0 | |
| Medicine Lodge | 1,818 | 25 | 2 | E. coli |
| Syracuse | 1,807 | 7 | 0 | |
| Wakeeney | 1,790 | 3 | 0 | |
| Hanover | 1,782 | 34 | 0 | |
| Yates Center | 1,782 | 85 | 58 | Contaminant 1009, Contaminant 2920, Total Haloacetic Acids (HAA5) |
| Piqua | 1,773 | 9 | 6 | TTHM, Total Haloacetic Acids (HAA5) |
| Caney | 1,756 | 101 | 29 | Contaminant 2920, TTHM |
| Edgerton | 1,741 | 5 | 0 | |
| Ogden | 1,721 | 5 | 0 | |
| Farmington Hills | 1,660 | 20 | 0 | |
| Oberlin | 1,639 | 24 | 0 | |
| Sedgwick | 1,598 | 5 | 0 | |
| Westmoreland | 1,566 | 8 | 2 | Disinfection Byproducts |
| Douglass | 1,551 | 9 | 1 | Total Haloacetic Acids (HAA5) |
| South Coffeyville | 1,541 | 29 | 0 | |
| Milford | 1,518 | 50 | 13 | Chlorine Dioxide, TTHM, Total Haloacetic Acids (HAA5) |
| Horton | 1,514 | 14 | 0 | |
| Galva | 1,506 | 17 | 5 | Barium, Disinfection Byproducts |
| Meade | 1,506 | 5 | 0 | |
| Chapman | 1,503 | 52 | 0 | |
| Perry | 1,500 | 36 | 5 | Disinfection Byproducts |
| Rosalia | 1,495 | 8 | 0 | |
| Harper | 1,482 | 32 | 3 | Chlorine Dioxide, Disinfection Byproducts |
| Belle Plaine | 1,468 | 45 | 38 | Disinfection Byproducts, Selenium |
| Bronson | 1,466 | 103 | 14 | Total Haloacetic Acids (HAA5) |
| Colwich | 1,463 | 6 | 0 | |
| Leoti | 1,430 | 10 | 0 | |
| Beattie | 1,427 | 6 | 0 | |
| Lyndon | 1,419 | 26 | 0 | |
| Kinsley | 1,417 | 10 | 4 | Lead |
| Hill City | 1,410 | 36 | 0 | |
| Stockton | 1,380 | 13 | 1 | Selenium |
| Sublette | 1,376 | 16 | 0 | |
| La Crosse | 1,376 | 32 | 21 | Haloacetic Acids |
| Little River | 1,374 | 13 | 0 | |
| Carbondale | 1,344 | 59 | 13 | Contaminant 2920 |
| Johnson City | 1,343 | 5 | 0 | |
| Silver Lake | 1,337 | 4 | 0 | |
| Susank | 1,328 | 14 | 0 | |
| Oxford | 1,328 | 8 | 1 | TTHM |
| Osborne | 1,324 | 10 | 0 | |
| Inman | 1,316 | 3 | 0 | |
| Belvue | 1,315 | 51 | 1 | Chlorine Dioxide |
| Buhler | 1,315 | 12 | 0 | |
| Ness City | 1,303 | 4 | 1 | Disinfection Byproducts |
| St Francis | 1,292 | 6 | 1 | Disinfection Byproducts |
| Atwood | 1,282 | 8 | 1 | Disinfection Byproducts |
| Wathena | 1,242 | 14 | 0 | |
| Pleasanton | 1,238 | 39 | 14 | Contaminant 2920, E. coli |
| Glen Elder | 1,232 | 153 | 63 | Arsenic, Contaminant 2920, Disinfection Byproducts +2 more |
| Hoxie | 1,218 | 3 | 1 | Disinfection Byproducts |
| Stark | 1,210 | 25 | 11 | TTHM, Total Haloacetic Acids (HAA5) |
| St George | 1,201 | 33 | 15 | Selenium |
| Mccune | 1,195 | 13 | 0 | |
| Lincoln | 1,181 | 3 | 2 | Disinfection Byproducts |
| Palmer | 1,180 | 41 | 3 | Disinfection Byproducts, Selenium |
| St John | 1,176 | 14 | 1 | Selenium |
| Victoria | 1,149 | 12 | 1 | Disinfection Byproducts |
| Haven | 1,149 | 14 | 0 | |
| Kiowa | 1,114 | 45 | 2 | Disinfection Byproducts |
| Elwood | 1,114 | 4 | 0 | |
| Moline | 1,103 | 42 | 12 | Disinfection Byproducts, TTHM, Total Haloacetic Acids (HAA5) |
| Howard | 1,103 | 72 | 12 | E. coli, TTHM |
| Rossville | 1,099 | 10 | 0 | |
| Olsburg | 1,086 | 28 | 2 | Chlorine Dioxide |
| Waverly | 1,074 | 20 | 1 | Disinfection Byproducts |
| Cherokee | 1,071 | 33 | 0 | |
| Washington | 1,065 | 2 | 1 | Disinfection Byproducts |
| Nickerson | 1,050 | 11 | 0 | |
| Maple Hill | 1,046 | 12 | 4 | Disinfection Byproducts |
| Satanta | 1,045 | 19 | 14 | Selenium |
| Esbon | 1,027 | 38 | 2 | Disinfection Byproducts |
| Longford | 1,023 | 49 | 3 | Chlorine Dioxide, Disinfection Byproducts |
| Plains | 1,023 | 5 | 1 | Disinfection Byproducts |
| Caldwell | 1,019 | 1 | 0 | |
| Drexel | 1,018 | 18 | 0 | |
| Linn Valley | 1,008 | 31 | 8 | Contaminant 2920 |
| Solomon | 993 | 11 | 0 | |
| Neosho Rapids | 980 | 9 | 0 | |
| Riley | 977 | 7 | 0 | |
| Quinter | 958 | 3 | 0 | |
| Dighton | 954 | 47 | 0 | |
| Lecompton | 952 | 12 | 0 | |
| Montezuma | 951 | 0 | 0 | |
| Garden Plain | 941 | 16 | 0 | |
| Andale | 938 | 5 | 0 | |
| Stafford | 936 | 13 | 3 | Chlorine Dioxide |
| Peabody | 932 | 67 | 12 | TTHM, Total Haloacetic Acids (HAA5) |
| Chetopa | 921 | 20 | 12 | E. coli, Total Haloacetic Acids (HAA5) |
| Blue Rapids | 921 | 13 | 0 | |
| St Paul | 920 | 39 | 6 | TTHM, Total Haloacetic Acids (HAA5) |
| Linwood | 918 | 32 | 7 | Total Haloacetic Acids (HAA5) |
| Highland | 917 | 33 | 28 | Selenium |
| Vassar | 900 | 14 | 0 | |
| Pomona | 890 | 5 | 2 | TTHM |
| Tribune | 886 | 69 | 20 | Gross Alpha, Selenium |
| Lebo | 883 | 6 | 4 | TTHM |
| Talmage | 879 | 7 | 0 | |
| Gypsum | 867 | 47 | 5 | Chlorine Dioxide |
| Durham | 866 | 45 | 1 | Disinfection Byproducts |
| Mclouth | 858 | 13 | 2 | Chlorine Dioxide, Disinfection Byproducts |
| Burrton | 854 | 7 | 2 | Chlorine Dioxide, Disinfection Byproducts |
| Mankato | 848 | 11 | 0 | |
| Wakefield | 846 | 16 | 0 | |
| Coldwater | 845 | 26 | 7 | Selenium |
| Wilson | 836 | 0 | 0 | |
| Courtland | 836 | 14 | 0 | |
| Cottonwood Falls | 821 | 7 | 0 | |
| Downs | 804 | 6 | 0 | |
| Alma | 799 | 27 | 6 | E. coli |
| Spearville | 796 | 14 | 0 | |
| Wetmore | 796 | 9 | 0 | |
| Powhattan | 793 | 24 | 1 | Disinfection Byproducts |
| Strong City | 786 | 4 | 0 | |
| Mount Hope | 783 | 5 | 0 | |
| Bucklin | 771 | 14 | 5 | Chlorine Dioxide, E. coli |
| Ashland | 770 | 18 | 0 | |
| Jetmore | 759 | 5 | 0 | |
| Minneola | 752 | 6 | 1 | Disinfection Byproducts |
| Sycamore | 745 | 12 | 0 | |
| Sharon Springs | 744 | 0 | 0 | |
| Frankfort | 717 | 5 | 0 | |
| Enterprise | 714 | 5 | 0 | |
| Greensburg | 714 | 5 | 0 | |
| Fairview | 709 | 13 | 0 | |
| Canton | 699 | 47 | 10 | Barium, Selenium |
| Deerfield | 692 | 23 | 10 | Haloacetic Acids |
| Clyde | 687 | 0 | 0 | |
| Madison | 682 | 74 | 7 | Total Haloacetic Acids (HAA5) |
| Leon | 667 | 25 | 1 | Disinfection Byproducts |
| Mulberry | 661 | 35 | 6 | Total Haloacetic Acids (HAA5) |
| Udall | 658 | 10 | 0 | |
| Waterville | 656 | 13 | 6 | Disinfection Byproducts, Selenium |
| Pretty Prairie | 655 | 88 | 54 | Selenium |
| Haviland | 651 | 61 | 36 | Selenium |
| Scranton | 651 | 25 | 2 | Disinfection Byproducts |
| Bennington | 635 | 8 | 0 | |
| Moran | 633 | 87 | 9 | TTHM, Total Haloacetic Acids (HAA5) |
| Nortonville | 599 | 3 | 0 | |
| Eskridge | 598 | 19 | 0 | |
| Marquette | 596 | 17 | 1 | Disinfection Byproducts |
| White City | 581 | 8 | 0 | |
| Protection | 580 | 19 | 3 | Chlorine Dioxide |
| Bentley | 569 | 17 | 0 | |
| Weir | 566 | 18 | 0 | |
| Grantville | 563 | 44 | 6 | Disinfection Byproducts, E. coli |
| Goessel | 558 | 9 | 0 | |
| Claflin | 553 | 15 | 0 | |
| Fowler | 532 | 23 | 0 | |
| Crestline | 520 | 7 | 0 | |
| Olpe | 513 | 2 | 0 | |
| Bern | 513 | 2 | 0 | |
| Attica | 506 | 15 | 0 | |
| Gas | 501 | 5 | 0 | |
| Effingham | 500 | 7 | 0 | |
| Falun | 498 | 18 | 4 | Disinfection Byproducts |
| Alliance | 494 | 165 | 3 | Disinfection Byproducts, E. coli |
| Thayer | 488 | 42 | 2 | TTHM |
| Centralia | 486 | 21 | 0 | |
| La Harpe | 484 | 9 | 1 | E. coli |
| Cedar Vale | 475 | 15 | 10 | Total Haloacetic Acids (HAA5) |
| Gorham | 471 | 38 | 4 | Disinfection Byproducts, E. coli |
| Macksville | 471 | 13 | 0 | |
| Cunningham | 462 | 7 | 0 | |
| Clifton | 455 | 11 | 3 | Disinfection Byproducts |
| Argonia | 455 | 106 | 66 | Barium, Selenium |
| Kanopolis | 453 | 15 | 4 | Disinfection Byproducts, E. coli, Selenium |
| Leroy | 447 | 20 | 4 | TTHM |
| Cawker City | 447 | 8 | 0 | |
| Miltonvale | 444 | 8 | 0 | |
| Scammon | 443 | 7 | 0 | |
| Richmond | 442 | 57 | 4 | Contaminant 2920, E. coli, TTHM |
| Glasco | 441 | 6 | 0 | |
| Logan | 440 | 17 | 0 | |
| Bird City | 437 | 4 | 0 | |
| Denton | 437 | 27 | 2 | TTHM |
| Leonardville | 436 | 8 | 0 | |
| Norwich | 433 | 160 | 50 | Chlorine Dioxide, Disinfection Byproducts, Selenium |
| Arlington | 431 | 14 | 6 | Selenium |
| Potwin | 424 | 44 | 7 | TTHM, Total Haloacetic Acids (HAA5) |
| Alta Vista | 422 | 4 | 1 | Chlorine Dioxide |
| Holyrood | 409 | 4 | 4 | Carbon Tetrachloride, Total Organic Carbon |
| Kensington | 401 | 10 | 2 | Barium, TTHM |
| Axtell | 398 | 0 | 0 | |
| Lewis | 390 | 21 | 7 | Selenium |
| Chase | 390 | 17 | 0 | |
| Florence | 387 | 46 | 18 | Fecal Coliform, TTHM, Total Haloacetic Acids (HAA5) |
| Rolla | 380 | 25 | 0 | |
| Dearing | 376 | 5 | 0 | |
| Almena | 366 | 150 | 0 | |
| Jewell | 365 | 68 | 42 | E. coli, TTHM |
| Natoma | 360 | 121 | 71 | E. coli, TTHM |
| Mayetta | 356 | 5 | 2 | Disinfection Byproducts |
| Hartford | 356 | 12 | 0 | |
| Melvern | 352 | 19 | 9 | Contaminant 2920 |
| Altoona | 349 | 34 | 0 | |
| Greenleaf | 347 | 11 | 9 | Disinfection Byproducts, Selenium |
| Princeton | 337 | 75 | 33 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Scandia | 337 | 1 | 0 | |
| Lucas | 337 | 24 | 3 | Chlorine Dioxide, Selenium |
| Kismet | 337 | 9 | 0 | |
| South Haven | 325 | 16 | 0 | |
| Ransom | 323 | 22 | 0 | |
| Grainfield | 321 | 14 | 0 | |
| Hope | 312 | 47 | 30 | TTHM |
| Delphos | 306 | 5 | 0 | |
| Turon | 304 | 8 | 0 | |
| Mccracken | 304 | 177 | 3 | Chlorine Dioxide, E. coli |
| Otis | 297 | 6 | 1 | Chlorine Dioxide |
| Uniontown | 296 | 4 | 0 | |
| Elk City | 292 | 194 | 142 | TTHM, Total Haloacetic Acids (HAA5) |
| Brewster | 290 | 23 | 12 | Selenium |
| Quenemo | 287 | 5 | 1 | Disinfection Byproducts |
| Sylvan Grove | 285 | 1 | 0 | |
| Morganville | 281 | 7 | 0 | |
| Mcfarland | 281 | 8 | 2 | E. coli |
| Murdock | 280 | 4 | 0 | |
| Bazine | 279 | 10 | 0 | |
| Longton | 277 | 60 | 36 | Contaminant 1006, TTHM, Total Haloacetic Acids (HAA5) |
| Moscow | 274 | 9 | 0 | |
| Greeley | 271 | 8 | 0 | |
| Tescott | 271 | 273 | 0 | |
| Hanston | 260 | 8 | 0 | |
| Everest | 259 | 6 | 0 | |
| Arcadia | 258 | 32 | 4 | Contaminant 2920, Total Haloacetic Acids (HAA5) |
| Grinnell | 257 | 0 | 0 | |
| Healy | 256 | 10 | 0 | |
| Lapeer | 256 | 9 | 0 | |
| Copeland | 251 | 170 | 49 | Selenium |
| Ingalls | 249 | 32 | 0 | |
| Weskan | 245 | 13 | 2 | E. coli |
| Lane | 244 | 21 | 5 | E. coli, Fecal Coliform, TTHM |
| Brookville | 244 | 34 | 0 | |
| Parker | 236 | 11 | 0 | |
| Jamestown | 234 | 4 | 0 | |
| Burns | 232 | 25 | 3 | Disinfection Byproducts, E. coli |
| Geneseo | 231 | 24 | 3 | Chlorine Dioxide, E. coli |
| Lake City | 230 | 2 | 0 | |
| Dexter | 226 | 20 | 1 | Disinfection Byproducts |
| Elbing | 225 | 3 | 0 | |
| Blue Mound | 223 | 8 | 0 | |
| Burdett | 218 | 12 | 0 | |
| Buffalo | 218 | 16 | 2 | TTHM |
| Morrill | 217 | 15 | 11 | TTHM, Total Haloacetic Acids (HAA5) |
| Fontana | 216 | 52 | 3 | Disinfection Byproducts |
| Corning | 213 | 7 | 0 | |
| Paxico | 212 | 12 | 12 | Selenium |
| Easton | 211 | 56 | 3 | Disinfection Byproducts |
| Sylvia | 210 | 89 | 46 | Chlorine Dioxide, Disinfection Byproducts, E. coli +1 more |
| Palco | 210 | 29 | 18 | Selenium |
| Prescott | 207 | 30 | 2 | Total Haloacetic Acids (HAA5) |
| Lenora | 206 | 4 | 0 | |
| Ford | 204 | 122 | 46 | E. coli, Selenium |
| Toronto | 203 | 28 | 13 | E. coli, Total Haloacetic Acids (HAA5) |
| Severy | 200 | 202 | 137 | Bromate, Contaminant 2920, E. coli +2 more |
| Agra | 200 | 13 | 2 | Chlorine Dioxide |
| Bushton | 199 | 51 | 25 | E. coli, Total Organic Carbon |
| Rexford | 198 | 5 | 0 | |
| Whiting | 196 | 13 | 1 | Disinfection Byproducts |
| Pawnee Rock | 190 | 17 | 0 | |
| Walnut | 189 | 17 | 3 | Disinfection Byproducts, TTHM |
| Selden | 189 | 3 | 0 | |
| Mullinville | 188 | 12 | 4 | Disinfection Byproducts |
| Tipton | 188 | 5 | 3 | TTHM |
| Winona | 184 | 6 | 0 | |
| Reading | 182 | 23 | 0 | |
| Lebanon | 182 | 30 | 9 | Disinfection Byproducts, Selenium |
| Robinson | 181 | 22 | 0 | |
| Harveyville | 181 | 12 | 0 | |
| Hamilton | 180 | 36 | 19 | TTHM, Total Haloacetic Acids (HAA5) |
| Bison | 178 | 13 | 0 | |
| Bogue | 175 | 44 | 3 | E. coli |
| Schoenchen | 173 | 47 | 1 | E. coli |
| Offerle | 172 | 6 | 0 | |
| Emmett | 170 | 19 | 1 | Disinfection Byproducts |
| Atlanta | 169 | 36 | 0 | |
| Ensign | 167 | 13 | 1 | E. coli |
| Randolph | 167 | 21 | 0 | |
| Luray | 167 | 21 | 4 | Disinfection Byproducts, TTHM |
| Fulton | 165 | 16 | 0 | |
| Hardtner | 164 | 9 | 0 | |
| Gaylord | 164 | 72 | 13 | Chlorine Dioxide, Disinfection Byproducts, E. coli +1 more |
| Barnes | 161 | 109 | 0 | |
| Woodbine | 160 | 67 | 33 | TTHM |
| Home | 160 | 57 | 8 | Chlorine Dioxide, Disinfection Byproducts |
| Norcatur | 159 | 14 | 0 | |
| Allen | 159 | 1 | 0 | |
| Lehigh | 159 | 7 | 0 | |
| Muscotah | 158 | 13 | 2 | Chlorine Dioxide |
| Circleville | 155 | 8 | 0 | |
| Iuka | 155 | 39 | 27 | Chlorine Dioxide, Selenium |
| Kanorado | 155 | 44 | 3 | Disinfection Byproducts |
| Geuda Springs | 151 | 11 | 1 | Chlorine Dioxide |
| West Mineral | 150 | 18 | 0 | |
| Woodston | 150 | 13 | 2 | Disinfection Byproducts |
| Delia | 149 | 19 | 1 | Chlorine Dioxide |
| Grenola | 148 | 24 | 7 | Total Haloacetic Acids (HAA5) |
| Sharon | 147 | 78 | 0 | |
| Denison | 145 | 17 | 0 | |
| Dorrance | 145 | 24 | 0 | |
| Burr Oak | 142 | 26 | 11 | Arsenic, Haloacetic Acids |
| Netawaka | 141 | 15 | 0 | |
| Lorraine | 140 | 9 | 0 | |
| Wilsey | 139 | 3 | 0 | |
| Cuba | 139 | 6 | 0 | |
| Beverly | 135 | 128 | 77 | Arsenic, E. coli, Haloacetic Acids +2 more |
| Long Island | 135 | 12 | 1 | Disinfection Byproducts |
| Kirwin | 132 | 6 | 0 | |
| Fort Dodge | 130 | 7 | 2 | Disinfection Byproducts |
| Admire | 130 | 10 | 1 | E. coli |
| Fall River | 129 | 34 | 10 | TTHM, Total Haloacetic Acids (HAA5) |
| Albert | 128 | 18 | 0 | |
| Manter | 127 | 6 | 0 | |
| Summerfield | 126 | 15 | 0 | |
| Havensville | 125 | 11 | 2 | Disinfection Byproducts |
| Herndon | 121 | 9 | 0 | |
| Preston | 120 | 20 | 0 | |
| Park | 117 | 8 | 0 | |
| Mcdonald | 116 | 5 | 1 | E. coli |
| White Cloud | 115 | 14 | 1 | Chlorine Dioxide |
| Morland | 115 | 6 | 1 | Chlorine Dioxide |
| Culver | 115 | 40 | 0 | |
| Damar | 115 | 46 | 0 | |
| Viola | 115 | 49 | 0 | |
| Morrowville | 115 | 13 | 0 | |
| Cassoday | 111 | 23 | 8 | TTHM, Total Haloacetic Acids (HAA5) |
| Chautauqua | 110 | 39 | 1 | Total Haloacetic Acids (HAA5) |
| Freeport | 110 | 54 | 41 | E. coli, Selenium |
| Haddam | 109 | 44 | 0 | |
| Kincaid | 106 | 16 | 1 | Total Haloacetic Acids (HAA5) |
| Bunker Hill | 106 | 23 | 15 | Total Organic Carbon |
| Peru | 105 | 10 | 0 | |
| Goff | 105 | 7 | 0 | |
| Soldier | 102 | 14 | 0 | |
| Prairie View | 102 | 3 | 0 | |
| Latham | 101 | 19 | 4 | Total Haloacetic Acids (HAA5) |
| Utica | 101 | 14 | 0 | |
| Alton | 100 | 6 | 1 | E. coli |
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.