Water Quality in Missouri
1,431 water systems • 666 cities • EPA SDWIS Data
1,431
Water Systems
25,377
Total Violations
3,923
Health-Based Violations
5,651,462
Population Served
Overview
Missouri has 1,431 active community water systems serving 5,651,462 people. These systems have accumulated 25,377 EPA Safe Drinking Water Act violations on record, of which 3,923 are health-based violations (meaning a contaminant exceeded safe levels).
Common contaminants found in violations: TTHM, E. coli, Chlorine Dioxide, Chlorine, Total Haloacetic Acids (HAA5), Contaminant 2920, Nitrate, Gross Alpha, Bromate, Contaminant 1009.
Cities with Most Violations in Missouri
| # | City | Violations | Health-Based | Water Systems | Population |
|---|---|---|---|---|---|
| 1 | Des Peres | 610 | 194 | 31 | 14,212 |
| 2 | Kimberling City | 590 | 34 | 35 | 5,896 |
| 3 | Stockton | 519 | 12 | 7 | 2,701 |
| 4 | Sedalia | 484 | 22 | 9 | 22,360 |
| 5 | Sullivan | 348 | 10 | 10 | 8,692 |
| 6 | Aurora | 339 | 11 | 25 | 31,215 |
| 7 | Branson | 338 | 20 | 15 | 21,017 |
| 8 | Branson West | 336 | 14 | 12 | 3,162 |
| 9 | Warsaw | 309 | 2 | 16 | 4,748 |
| 10 | Reeds Spring | 305 | 11 | 11 | 2,195 |
Largest Cities in Missouri
| # | City | Population | Violations | Water Systems |
|---|---|---|---|---|
| 1 | Chesterfield | 1,113,079 | 145 | 4 |
| 2 | Kansas City | 520,700 | 2 | 2 |
| 3 | St Louis | 304,851 | 73 | 4 |
| 4 | Springfield | 212,286 | 144 | 12 |
| 5 | Columbia | 206,254 | 32 | 6 |
| 6 | O Fallon | 142,677 | 66 | 12 |
| 7 | Independence | 120,830 | 11 | 3 |
| 8 | Joplin | 114,665 | 251 | 31 |
| 9 | Lees Summit | 108,172 | 16 | 2 |
| 10 | St Joseph | 93,969 | 26 | 5 |
All Cities in Missouri
| City | Population | Violations | Health Violations | Contaminants |
|---|---|---|---|---|
| Chesterfield | 1,113,079 | 145 | 36 | Chlorine, Chlorine Dioxide, TTHM +1 more |
| Kansas City | 520,700 | 2 | 1 | Bromate |
| St Louis | 304,851 | 73 | 0 | |
| Springfield | 212,286 | 144 | 8 | Chlorine, Chlorine Dioxide, E. coli |
| Columbia | 206,254 | 32 | 0 | |
| O Fallon | 142,677 | 66 | 0 | |
| Independence | 120,830 | 11 | 0 | |
| Joplin | 114,665 | 251 | 71 | Chlorine, Chlorine Dioxide, Contaminant 1009 +5 more |
| Lees Summit | 108,172 | 16 | 0 | |
| St Joseph | 93,969 | 26 | 4 | TTHM |
| St Charles | 73,040 | 4 | 0 | |
| Jefferson City | 69,513 | 4 | 0 | |
| Blue Springs | 61,084 | 5 | 0 | |
| St Peters | 52,575 | 1 | 0 | |
| Wentzville | 41,919 | 8 | 0 | |
| Cape Girardeau | 41,436 | 241 | 162 | Chlorine Dioxide, E. coli, Gross Alpha +2 more |
| Arnold | 38,712 | 6 | 0 | |
| Barnhart | 37,000 | 0 | 0 | |
| Fort Leonard Wood | 34,000 | 0 | 0 | |
| Liberty | 33,627 | 106 | 0 | |
| Raytown | 33,506 | 6 | 0 | |
| Belton | 32,031 | 23 | 0 | |
| Aurora | 31,215 | 339 | 11 | Chlorine Dioxide, E. coli, Gross Alpha |
| Lebanon | 30,067 | 19 | 12 | Contaminant 1085 |
| Poplar Bluff | 28,768 | 32 | 29 | Bromate, TTHM, Total Haloacetic Acids (HAA5) |
| Kirkwood | 28,000 | 0 | 0 | |
| Nixa | 27,839 | 63 | 2 | Chlorine Dioxide, Gross Alpha |
| Raymore | 27,050 | 16 | 0 | |
| Gladstone | 27,000 | 1 | 0 | |
| Fulton | 25,758 | 11 | 0 | |
| Kirksville | 25,066 | 16 | 15 | Contaminant 2920, TTHM |
| Hannibal | 24,770 | 60 | 47 | Bromate, E. coli, Fecal Coliform +1 more |
| Moberly | 24,663 | 9 | 6 | TTHM |
| Grandview | 24,500 | 0 | 0 | |
| Jackson | 24,301 | 32 | 2 | Chlorine Dioxide |
| Farmington | 23,579 | 138 | 72 | Gross Alpha, HAA5, TTHM +1 more |
| Rolla | 23,381 | 245 | 4 | Chlorine Dioxide, E. coli |
| Ozark | 22,480 | 122 | 5 | Chlorine, Gross Alpha |
| Sedalia | 22,360 | 484 | 22 | Chlorine, Chlorine Dioxide, E. coli |
| Branson | 21,017 | 338 | 20 | Chlorine, Chlorine Dioxide, E. coli +1 more |
| Parkville | 18,740 | 0 | 0 | |
| Grain Valley | 18,530 | 2 | 0 | |
| Macon | 18,354 | 3 | 0 | |
| Harrisonville | 17,922 | 14 | 0 | |
| Sikeston | 17,879 | 31 | 2 | Chlorine Dioxide |
| Nevada | 17,813 | 8 | 4 | E. coli |
| Washington | 17,690 | 41 | 5 | Chlorine Dioxide |
| Maryville | 17,203 | 31 | 10 | Bromate, Chlorine Dioxide, Contaminant 1009 +1 more |
| Cottleville | 16,978 | 16 | 1 | E. coli |
| Eureka | 16,618 | 13 | 0 | |
| Marshall | 16,414 | 61 | 48 | Chlorine Dioxide, E. coli, TTHM |
| Kearney | 16,412 | 10 | 0 | |
| Republic | 16,100 | 3 | 0 | |
| West Plains | 16,056 | 18 | 8 | E. coli, Fecal Coliform |
| Webb City | 15,871 | 10 | 0 | |
| De Soto | 15,605 | 28 | 2 | Chlorine Dioxide |
| Cameron | 15,578 | 10 | 10 | TTHM |
| Winfield | 15,489 | 27 | 4 | Chlorine Dioxide, Lead |
| Holden | 15,173 | 29 | 1 | TTHM |
| Richmond | 15,157 | 3 | 1 | Chlorine |
| Festus | 15,130 | 189 | 0 | |
| Waynesville | 14,884 | 32 | 0 | |
| Carthage | 14,637 | 12 | 0 | |
| Clinton | 14,624 | 31 | 20 | TTHM, Total Haloacetic Acids (HAA5) |
| Smithville | 14,550 | 29 | 10 | TTHM |
| Platte City | 14,516 | 12 | 0 | |
| Troy | 14,505 | 138 | 45 | Chlorine Dioxide, E. coli, HAA5 +1 more |
| Chillicothe | 14,489 | 7 | 1 | Chlorine Dioxide |
| Des Peres | 14,212 | 610 | 194 | Chlorine, Chlorine Dioxide, E. coli +3 more |
| Lamar | 14,023 | 36 | 19 | Contaminant 2920, TTHM, Total Haloacetic Acids (HAA5) |
| Odessa | 13,779 | 3 | 0 | |
| Carl Junction | 13,642 | 7 | 0 | |
| Excelsior Springs | 13,447 | 8 | 2 | TTHM |
| Union | 13,431 | 173 | 14 | Chlorine, Chlorine Dioxide, E. coli |
| Dexter | 12,927 | 1 | 0 | |
| Perryville | 12,637 | 93 | 19 | HAA5, TTHM, Total Organic Carbon |
| Hillsboro | 12,635 | 33 | 4 | Chlorine Dioxide, E. coli |
| Warrenton | 12,603 | 41 | 4 | Chlorine Dioxide, E. coli |
| Neosho | 12,374 | 131 | 4 | Chlorine, Chlorine Dioxide |
| Lake Ozark | 12,099 | 163 | 2 | Chlorine Dioxide, Disinfection Byproducts |
| Kennett | 12,062 | 111 | 0 | |
| Higginsville | 11,980 | 26 | 26 | Gross Alpha, TTHM |
| Bowling Green | 11,785 | 4 | 0 | |
| Savannah | 11,212 | 8 | 0 | |
| Pleasant Hill | 11,137 | 20 | 0 | |
| Trenton | 11,007 | 11 | 8 | TTHM |
| Ste Genevieve | 10,754 | 29 | 1 | Chlorine Dioxide |
| Boonville | 10,565 | 50 | 32 | Bromate, TTHM, Total Haloacetic Acids (HAA5) |
| Imperial | 10,370 | 20 | 1 | Chlorine Dioxide |
| Camdenton | 10,237 | 167 | 2 | Chlorine Dioxide, E. coli |
| Villa Ridge | 10,150 | 12 | 0 | |
| Whiteman Afb | 10,106 | 9 | 0 | |
| Brookfield | 10,074 | 16 | 2 | TTHM |
| Holts Summit | 9,940 | 29 | 4 | E. coli |
| Park Hills | 9,602 | 40 | 7 | Chlorine Dioxide, E. coli |
| Hayti | 9,351 | 101 | 0 | |
| Peculiar | 9,294 | 6 | 0 | |
| Battlefield | 9,168 | 7 | 0 | |
| Monett | 9,057 | 3 | 0 | |
| Lake Lotawana | 9,002 | 3 | 0 | |
| Centralia | 8,990 | 6 | 0 | |
| Sullivan | 8,692 | 348 | 10 | E. coli |
| Lathrop | 8,663 | 10 | 0 | |
| Willard | 8,475 | 7 | 2 | Chlorine, Gross Alpha |
| Warrensburg | 8,430 | 4 | 0 | |
| Oak Grove | 8,289 | 5 | 0 | |
| House Springs | 8,033 | 19 | 0 | |
| Doniphan | 7,985 | 40 | 26 | Chlorine Dioxide, HAA5, Total Organic Carbon |
| Pacific | 7,882 | 112 | 5 | Chlorine Dioxide, Disinfection Byproducts, E. coli |
| Clarksdale | 7,880 | 5 | 0 | |
| Hallsville | 7,855 | 5 | 0 | |
| Marshfield | 7,540 | 36 | 9 | Chlorine Dioxide, Gross Alpha |
| Laddonia | 7,188 | 34 | 5 | Chlorine |
| Perry | 7,176 | 5 | 0 | |
| Osage Beach | 7,167 | 91 | 3 | E. coli |
| Williamstown | 7,140 | 6 | 0 | |
| Bonne Terre | 7,085 | 66 | 43 | HAA5, Total Organic Carbon |
| Bethany | 7,032 | 25 | 4 | Chlorine Dioxide, Disinfection Byproducts |
| Carrollton | 6,577 | 19 | 0 | |
| Butler | 6,532 | 17 | 2 | TTHM |
| Powersite | 6,325 | 9 | 0 | |
| Milan | 6,256 | 13 | 4 | TTHM |
| Charleston | 5,900 | 4 | 0 | |
| Kimberling City | 5,896 | 590 | 34 | Chlorine, Chlorine Dioxide, E. coli +2 more |
| Campbell | 5,869 | 13 | 1 | Chlorine Dioxide |
| Salem | 5,858 | 21 | 10 | Gross Alpha |
| Pevely | 5,840 | 20 | 0 | |
| California | 5,823 | 18 | 2 | E. coli |
| Rogersville | 5,811 | 66 | 7 | Chlorine Dioxide, E. coli |
| Hollister | 5,726 | 166 | 7 | Chlorine Dioxide, E. coli, Gross Alpha |
| Greenwood | 5,705 | 2 | 0 | |
| Saint Robert | 5,642 | 86 | 14 | Chlorine Dioxide, E. coli, Gross Alpha |
| Caruthersville | 5,518 | 7 | 0 | |
| Eldon | 5,375 | 76 | 4 | E. coli, Gross Alpha |
| Unionville | 5,317 | 47 | 21 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Memphis | 5,182 | 91 | 21 | Contaminant 2920 |
| Licking | 5,179 | 3 | 0 | |
| Cedar Hill | 5,138 | 45 | 5 | Chlorine Dioxide, E. coli, Gross Alpha |
| Desloge | 5,034 | 8 | 0 | |
| Mountain Grove | 4,984 | 44 | 0 | |
| St Clair | 4,950 | 10 | 3 | Gross Alpha |
| Philadelphia | 4,900 | 3 | 0 | |
| Crystal City | 4,833 | 11 | 10 | TTHM |
| Warsaw | 4,748 | 309 | 2 | Chlorine Dioxide, E. coli |
| Lexington | 4,729 | 13 | 12 | Bromate, E. coli |
| Mount Vernon | 4,701 | 201 | 16 | Chlorine, Chlorine Dioxide, E. coli |
| Gallatin | 4,669 | 12 | 2 | Bromate, TTHM |
| Senath | 4,667 | 38 | 4 | Chlorine, Chlorine Dioxide |
| Scott City | 4,653 | 11 | 0 | |
| Moscow Mills | 4,640 | 31 | 6 | Chlorine Dioxide, E. coli |
| Freeman | 4,625 | 23 | 2 | Bromate |
| North Kansas City | 4,500 | 1 | 0 | |
| Sibley | 4,450 | 7 | 0 | |
| Fredricktown | 4,429 | 64 | 63 | Bromate, TTHM, Total Haloacetic Acids (HAA5) |
| Adrian | 4,325 | 89 | 14 | E. coli, TTHM |
| Linn | 4,300 | 32 | 0 | |
| Houston | 4,289 | 20 | 0 | |
| Herculaneum | 4,227 | 3 | 0 | |
| Weston | 4,190 | 67 | 12 | Chlorine Dioxide, TTHM |
| St James | 4,163 | 67 | 0 | |
| Mexico | 4,016 | 0 | 0 | |
| Laquey | 4,000 | 8 | 6 | E. coli, Gross Alpha |
| Knox City | 3,947 | 29 | 0 | |
| Potosi | 3,930 | 72 | 30 | Gross Alpha |
| Willow Springs | 3,875 | 10 | 0 | |
| New Madrid | 3,850 | 41 | 1 | Chlorine Dioxide |
| Morley | 3,847 | 49 | 0 | |
| Cassville | 3,760 | 6 | 0 | |
| Rich Hill | 3,748 | 8 | 5 | Fecal Coliform, TTHM |
| Ashland | 3,740 | 40 | 0 | |
| Malden | 3,706 | 8 | 1 | E. coli |
| Chaffee | 3,685 | 258 | 3 | Chlorine Dioxide, Gross Alpha |
| Palmyra | 3,595 | 1 | 0 | |
| El Dorado Springs | 3,593 | 1 | 1 | E. coli |
| Cosby | 3,580 | 0 | 0 | |
| Mercer | 3,518 | 49 | 22 | TTHM |
| Concordia | 3,500 | 64 | 18 | Contaminant 2920, TTHM |
| Sugar Creek | 3,500 | 4 | 0 | |
| Exeter | 3,500 | 9 | 6 | Gross Alpha |
| Pleasant Valley | 3,485 | 4 | 0 | |
| Queen City | 3,482 | 1 | 0 | |
| Albany | 3,475 | 9 | 5 | E. coli, TTHM |
| Holt | 3,447 | 7 | 6 | TTHM |
| Roby | 3,335 | 4 | 0 | |
| Cuba | 3,332 | 12 | 5 | Gross Alpha |
| Shelbyville | 3,300 | 0 | 0 | |
| Owensville | 3,275 | 41 | 1 | E. coli |
| Louisiana | 3,244 | 83 | 51 | TTHM, Total Haloacetic Acids (HAA5) |
| Canton | 3,200 | 3 | 2 | TTHM |
| Portageville | 3,200 | 139 | 1 | Chlorine |
| Buffalo | 3,162 | 10 | 0 | |
| Branson West | 3,162 | 336 | 14 | Chlorine, Chlorine Dioxide, E. coli +1 more |
| Vandalia | 3,140 | 26 | 20 | TTHM, Total Haloacetic Acids (HAA5) |
| Montrose | 3,084 | 42 | 8 | Contaminant 2920, TTHM, Total Haloacetic Acids (HAA5) |
| Buckner | 3,076 | 11 | 0 | |
| Broseley | 3,075 | 19 | 0 | |
| Ava | 3,057 | 74 | 7 | Chlorine, Chlorine Dioxide, Gross Alpha |
| Anniston | 3,000 | 13 | 2 | Chlorine Dioxide |
| Knob Noster | 2,993 | 5 | 0 | |
| East Prairie | 2,964 | 11 | 0 | |
| Forsyth | 2,938 | 179 | 7 | Chlorine, E. coli, Gross Alpha |
| Windsor | 2,900 | 13 | 1 | Gross Alpha |
| Tipton | 2,861 | 2 | 0 | |
| Montgomery City | 2,811 | 4 | 0 | |
| Fayette | 2,800 | 18 | 15 | TTHM |
| Mt View | 2,791 | 7 | 0 | |
| Strafford | 2,725 | 9 | 0 | |
| Orongo | 2,719 | 4 | 0 | |
| Slater | 2,718 | 15 | 6 | E. coli, TTHM |
| Stockton | 2,701 | 519 | 12 | Chlorine Dioxide, E. coli, Gross Alpha |
| Bernie | 2,700 | 28 | 0 | |
| Stover | 2,632 | 143 | 15 | E. coli, Gross Alpha |
| Versailles | 2,589 | 22 | 1 | Chlorine Dioxide |
| Bloomfield | 2,583 | 31 | 0 | |
| Gideon | 2,564 | 20 | 0 | |
| Hermann | 2,550 | 19 | 1 | Gross Alpha |
| Polo | 2,545 | 0 | 0 | |
| Dearborn | 2,530 | 12 | 0 | |
| Monroe | 2,500 | 137 | 88 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Millersville | 2,500 | 15 | 0 | |
| Lawson | 2,490 | 3 | 2 | TTHM |
| Jane | 2,481 | 8 | 0 | |
| Pattonsburg | 2,480 | 25 | 2 | Chlorine Dioxide |
| Craig | 2,400 | 23 | 7 | Chlorine, TTHM |
| Seneca | 2,390 | 2 | 0 | |
| Dekalb | 2,365 | 6 | 0 | |
| Plattsburg | 2,354 | 4 | 0 | |
| Sheldon | 2,343 | 4 | 0 | |
| Braymer | 2,330 | 84 | 18 | Chlorine, Chlorine Dioxide, TTHM |
| Drexel | 2,300 | 19 | 2 | Chlorine Dioxide, Gross Alpha |
| Piedmont | 2,287 | 68 | 7 | Bromate, E. coli |
| Glasgow | 2,268 | 13 | 2 | Chlorine Dioxide |
| Elsberry | 2,256 | 28 | 2 | Chlorine Dioxide |
| Marceline | 2,200 | 0 | 0 | |
| Thayer | 2,200 | 11 | 0 | |
| Reeds Spring | 2,195 | 305 | 11 | Chlorine Dioxide, E. coli |
| Cabool | 2,146 | 2 | 0 | |
| Stanberry | 2,145 | 26 | 5 | TTHM, Total Haloacetic Acids (HAA5) |
| Clever | 2,139 | 4 | 1 | Chlorine Dioxide |
| Van Buren | 2,119 | 27 | 0 | |
| Garden City | 2,104 | 52 | 1 | Chlorine Dioxide |
| Franklin | 2,100 | 9 | 6 | Chlorine Dioxide, TTHM |
| Weatherby Lake | 2,077 | 1 | 0 | |
| Crocker | 2,046 | 15 | 4 | Gross Alpha |
| Granby | 2,034 | 5 | 0 | |
| Hilsboro | 2,012 | 7 | 0 | |
| Qulin | 2,000 | 12 | 2 | E. coli |
| Taneyville | 2,000 | 1 | 0 | |
| New Haven | 2,000 | 4 | 0 | |
| Carterville | 1,982 | 16 | 1 | Chlorine Dioxide |
| Steele | 1,975 | 59 | 8 | Chlorine, Chlorine Dioxide |
| Kahoka | 1,961 | 7 | 0 | |
| Anderson | 1,961 | 3 | 0 | |
| Lampe | 1,955 | 217 | 0 | |
| Sparta | 1,946 | 7 | 0 | |
| Seymour | 1,943 | 4 | 0 | |
| Brunswick | 1,936 | 9 | 0 | |
| Oregon | 1,922 | 22 | 2 | TTHM |
| Alton | 1,900 | 56 | 0 | |
| Richland | 1,863 | 9 | 2 | E. coli |
| Merriam Woods | 1,839 | 46 | 0 | |
| Hamilton | 1,838 | 10 | 5 | Contaminant 2920, TTHM |
| Wheatland | 1,821 | 13 | 0 | |
| Shelbina | 1,771 | 1 | 0 | |
| Gordonville | 1,743 | 13 | 0 | |
| Bourbon | 1,738 | 43 | 0 | |
| Bradenton | 1,735 | 15 | 0 | |
| Fredericktown | 1,705 | 2 | 0 | |
| Fordland | 1,700 | 66 | 4 | Gross Alpha |
| Point Lookout | 1,700 | 1 | 1 | E. coli |
| Ewing | 1,688 | 2 | 0 | |
| El Dorando Springs | 1,650 | 21 | 3 | Chlorine Dioxide |
| Urich | 1,645 | 13 | 10 | TTHM, Total Haloacetic Acids (HAA5) |
| Fair Grove | 1,645 | 30 | 3 | E. coli, Gross Alpha |
| Wheeling | 1,634 | 17 | 1 | TTHM |
| Salisbury | 1,620 | 2 | 1 | TTHM |
| Marble Hill | 1,606 | 39 | 19 | Gross Alpha |
| Lake Winnebago | 1,600 | 3 | 0 | |
| Southwest City | 1,576 | 11 | 2 | Chlorine Dioxide |
| Belle | 1,570 | 25 | 0 | |
| Huntsville | 1,563 | 0 | 0 | |
| Blue Eye | 1,556 | 217 | 8 | Chlorine, Chlorine Dioxide, E. coli +1 more |
| Roach | 1,542 | 30 | 3 | E. coli, Gross Alpha |
| Sarcoxie | 1,539 | 10 | 2 | Chlorine |
| Gower | 1,525 | 1 | 0 | |
| Steelville | 1,525 | 4 | 0 | |
| Appleton City | 1,518 | 10 | 4 | Bromate, TTHM |
| Rocky Comfort | 1,500 | 4 | 0 | |
| Worth | 1,497 | 14 | 0 | |
| Crane | 1,495 | 98 | 2 | E. coli, Gross Alpha |
| Tarkio | 1,494 | 1 | 0 | |
| Ash Grove | 1,472 | 48 | 2 | Gross Alpha |
| Bismarck | 1,470 | 7 | 7 | Gross Alpha |
| Duenweg | 1,469 | 6 | 0 | |
| Purdin | 1,420 | 4 | 0 | |
| Highlandville | 1,417 | 8 | 0 | |
| Gerald | 1,413 | 11 | 0 | |
| Sweet Springs | 1,412 | 52 | 10 | TTHM |
| Advance | 1,400 | 9 | 2 | Chlorine |
| Wappappello | 1,400 | 1 | 0 | |
| Greenfield | 1,400 | 3 | 0 | |
| Sunrise Beach | 1,398 | 90 | 28 | E. coli, Gross Alpha, Total Haloacetic Acids (HAA5) |
| Fillmore | 1,392 | 32 | 21 | Bromate, TTHM |
| Laplata | 1,366 | 0 | 0 | |
| Vienna | 1,365 | 42 | 0 | |
| Charlotte | 1,357 | 16 | 0 | |
| Lilbourn | 1,352 | 129 | 10 | Chlorine, Chlorine Dioxide |
| Essex | 1,322 | 55 | 14 | Chlorine, Chlorine Dioxide, E. coli +1 more |
| Dawn | 1,320 | 3 | 0 | |
| Rockport | 1,318 | 2 | 0 | |
| Winona | 1,315 | 4 | 0 | |
| Archie | 1,300 | 68 | 17 | E. coli, TTHM |
| Macks Creek | 1,300 | 33 | 1 | Chlorine Dioxide |
| Oran | 1,294 | 43 | 1 | Chlorine Dioxide |
| Princeton | 1,283 | 5 | 0 | |
| Mansfield | 1,258 | 21 | 0 | |
| Goodman | 1,250 | 7 | 0 | |
| Dixon | 1,221 | 34 | 10 | E. coli, Gross Alpha |
| Loose Creek | 1,221 | 24 | 0 | |
| Wellsville | 1,210 | 25 | 0 | |
| Cole Camp | 1,200 | 4 | 0 | |
| Pierce City | 1,200 | 54 | 0 | |
| Marthasville | 1,200 | 11 | 0 | |
| Leadwood | 1,192 | 75 | 61 | HAA5, Total Organic Carbon |
| Westphalia | 1,173 | 12 | 0 | |
| Paris | 1,161 | 12 | 0 | |
| Mound City | 1,159 | 0 | 0 | |
| La Monte | 1,150 | 18 | 0 | |
| Miner | 1,135 | 5 | 4 | Chlorine Dioxide |
| Matthews | 1,128 | 30 | 0 | |
| Clarkton | 1,124 | 33 | 7 | Chlorine Dioxide |
| King City | 1,100 | 36 | 31 | Contaminant 2920 |
| Lincoln | 1,100 | 6 | 5 | Gross Alpha |
| Purdy | 1,100 | 2 | 0 | |
| Maysville | 1,096 | 132 | 125 | Contaminant 1009, Contaminant 2920, E. coli +3 more |
| New Franklin | 1,089 | 33 | 18 | TTHM |
| Billings | 1,088 | 17 | 3 | Gross Alpha |
| Lake Waukomis | 1,083 | 11 | 0 | |
| Trimble | 1,080 | 0 | 0 | |
| Humansville | 1,048 | 3 | 1 | E. coli |
| Edina | 1,014 | 24 | 0 | |
| Auxvasse | 1,001 | 4 | 0 | |
| Unity Village | 1,000 | 16 | 7 | TTHM |
| Lake Tapawingo | 995 | 9 | 0 | |
| Laurie | 990 | 4 | 0 | |
| Puxico | 985 | 4 | 0 | |
| New London | 975 | 2 | 1 | TTHM |
| Benton | 957 | 8 | 2 | Gross Alpha |
| Patterson | 950 | 4 | 0 | |
| Osceola | 947 | 2 | 0 | |
| Wappapello | 946 | 24 | 0 | |
| Lockwood | 936 | 3 | 0 | |
| Jasper | 932 | 2 | 0 | |
| Diamond | 926 | 4 | 0 | |
| Galena | 920 | 135 | 12 | E. coli, Gross Alpha |
| Ellington | 900 | 22 | 1 | Chlorine |
| Selligman | 890 | 4 | 1 | E. coli |
| Lagrange | 874 | 24 | 11 | TTHM |
| Sturgeon | 872 | 12 | 0 | |
| Pineville | 866 | 30 | 5 | Chlorine, Chlorine Dioxide |
| Truesdale | 853 | 0 | 0 | |
| Grant City | 850 | 5 | 0 | |
| Pomona | 850 | 6 | 0 | |
| Rockaway Beach | 841 | 1 | 0 | |
| Eagleville | 823 | 9 | 1 | TTHM |
| Clarence | 813 | 6 | 4 | TTHM |
| Wellington | 812 | 6 | 0 | |
| Innsbrook | 810 | 4 | 0 | |
| Ferrelview | 802 | 8 | 0 | |
| Waverly | 800 | 19 | 12 | Chlorine, TTHM |
| Russellville | 800 | 0 | 0 | |
| Edgar Springs | 800 | 4 | 2 | E. coli, Gross Alpha |
| Conway | 788 | 7 | 7 | Gross Alpha |
| Riverside | 775 | 4 | 0 | |
| New Florence | 769 | 8 | 0 | |
| Pilot Grove | 768 | 0 | 0 | |
| Jonesburg | 768 | 2 | 0 | |
| Shell Knob | 767 | 97 | 4 | Chlorine Dioxide, Gross Alpha |
| Bevier | 762 | 14 | 0 | |
| Beufort | 760 | 2 | 0 | |
| Liberal | 759 | 0 | 0 | |
| Amsterdam | 752 | 57 | 33 | Contaminant 2920 |
| Morehouse | 749 | 54 | 4 | Chlorine, Chlorine Dioxide |
| Pilot Knob | 746 | 2 | 0 | |
| Rosendale | 742 | 84 | 26 | TTHM |
| Gainesville | 742 | 6 | 2 | E. coli |
| Camden Point | 741 | 6 | 1 | Bromate |
| Bertrand | 733 | 170 | 15 | Chlorine Dioxide |
| Lancaster | 728 | 4 | 0 | |
| Rock Port | 725 | 5 | 0 | |
| Strasburg | 723 | 3 | 0 | |
| Iberia | 700 | 12 | 3 | Chlorine |
| Eminence | 700 | 6 | 0 | |
| Miller | 699 | 3 | 0 | |
| Wheaton | 698 | 4 | 0 | |
| Kidder | 695 | 24 | 15 | TTHM, Total Haloacetic Acids (HAA5) |
| Cleveland | 690 | 48 | 36 | TTHM, Total Haloacetic Acids (HAA5) |
| Golden City | 680 | 3 | 0 | |
| Birch Tree | 679 | 1 | 0 | |
| Rockville | 675 | 21 | 8 | TTHM, Total Haloacetic Acids (HAA5) |
| New Bloomfield | 669 | 3 | 0 | |
| Hawk Point | 669 | 3 | 0 | |
| Norwood | 665 | 1 | 0 | |
| Walnut Grove | 665 | 46 | 0 | |
| La Belle | 660 | 10 | 0 | |
| Green City | 657 | 6 | 4 | TTHM |
| Hartville | 655 | 1 | 0 | |
| Golden | 654 | 8 | 0 | |
| Ste. Genevieve | 650 | 4 | 0 | |
| Lowry City | 640 | 15 | 10 | Gross Alpha |
| Bloomsdale | 639 | 33 | 4 | Chlorine Dioxide |
| Viburnum | 639 | 37 | 2 | Chlorine Dioxide |
| Fairfax | 638 | 0 | 0 | |
| Canalou | 638 | 28 | 0 | |
| Holcomb | 635 | 12 | 0 | |
| Burlington Junction | 630 | 15 | 4 | Chlorine, Chlorine Dioxide |
| Hermitage | 621 | 4 | 1 | Chlorine Dioxide |
| Norborne | 617 | 19 | 2 | E. coli |
| Edgerton | 615 | 11 | 0 | |
| Pleasant Hope | 614 | 12 | 1 | Chlorine |
| Arcadia | 605 | 7 | 2 | Chlorine |
| Leeton | 601 | 12 | 0 | |
| Lewistown | 580 | 1 | 0 | |
| Bolivar | 575 | 19 | 2 | Gross Alpha |
| Sherman | 572 | 18 | 0 | |
| Hardin | 569 | 7 | 0 | |
| Jamesport | 567 | 2 | 0 | |
| Wooldridge | 562 | 8 | 1 | Chlorine Dioxide |
| Higbee | 560 | 20 | 4 | TTHM |
| Martinsburg | 559 | 8 | 0 | |
| Alba | 555 | 76 | 8 | Gross Alpha |
| Madison | 554 | 0 | 0 | |
| Shelbville | 552 | 0 | 0 | |
| Hopkins | 550 | 21 | 2 | Chlorine |
| Novinger | 550 | 14 | 1 | Chlorine |
| Deerfield | 550 | 14 | 0 | |
| Bland | 539 | 8 | 0 | |
| Wayland | 533 | 22 | 0 | |
| Cardwell | 533 | 89 | 0 | |
| Hornersville | 526 | 235 | 4 | Barium, E. coli |
| St Elizabeth | 519 | 15 | 2 | Chlorine Dioxide, E. coli |
| Otterville | 510 | 24 | 1 | Chlorine |
| Stoutland | 510 | 4 | 0 | |
| Marston | 503 | 9 | 0 | |
| Summersville | 502 | 24 | 15 | Chlorine, Chlorine Dioxide |
| Keytesville | 500 | 19 | 12 | Gross Alpha, TTHM |
| Ellsinore | 500 | 14 | 0 | |
| Greenville | 497 | 1 | 0 | |
| Alma | 494 | 2 | 0 | |
| Leslie | 492 | 26 | 3 | Chlorine Dioxide, Gross Alpha |
| Arbyrd | 490 | 10 | 0 | |
| Bois D Arc | 485 | 5 | 0 | |
| Grovespring | 483 | 5 | 0 | |
| Pittsburg | 482 | 87 | 6 | E. coli, Gross Alpha |
| Hale | 480 | 11 | 0 | |
| Delta | 480 | 22 | 0 | |
| St Genevieve | 475 | 26 | 16 | Total Organic Carbon |
| Fair Play | 475 | 7 | 0 | |
| Naylor | 471 | 1 | 0 | |
| Deepwater | 461 | 27 | 9 | Gross Alpha, Total Haloacetic Acids (HAA5) |
| Farber | 450 | 13 | 1 | TTHM |
| Green Ridge | 450 | 8 | 3 | Chlorine Dioxide |
| Parma | 450 | 85 | 12 | Chlorine, Chlorine Dioxide |
| Stark City | 450 | 3 | 0 | |
| Washburn | 448 | 2 | 0 | |
| Irondale | 445 | 22 | 0 | |
| Clarksville | 442 | 8 | 2 | Chlorine |
| Freeburg | 437 | 176 | 0 | |
| Linn Creek | 434 | 9 | 0 | |
| Bell City | 428 | 2 | 0 | |
| Ravenwood | 420 | 26 | 3 | Chlorine |
| Weableau | 418 | 2 | 2 | Chlorine |
| Meadville | 415 | 15 | 0 | |
| Fairview | 415 | 80 | 3 | Chlorine Dioxide, E. coli |
| Niangua | 411 | 24 | 2 | E. coli |
| Rosebud | 410 | 0 | 0 | |
| Urbana | 409 | 5 | 0 | |
| Bucklin | 408 | 16 | 0 | |
| Bunker | 407 | 1 | 0 | |
| Newburg | 406 | 23 | 3 | Chlorine |
| Osborn | 405 | 4 | 0 | |
| East Lynne | 400 | 5 | 2 | Chlorine Dioxide |
| Lesterville | 400 | 232 | 0 | |
| Morrisville | 400 | 3 | 0 | |
| Bull Creek | 400 | 12 | 1 | Chlorine Dioxide |
| Henrietta | 397 | 25 | 0 | |
| Chamois | 396 | 28 | 4 | Chlorine, Chlorine Dioxide |
| Tracy | 390 | 5 | 0 | |
| Brookline | 390 | 52 | 1 | E. coli |
| Gilman City | 387 | 13 | 6 | TTHM |
| Union Star | 386 | 5 | 0 | |
| Atlanta | 385 | 11 | 0 | |
| Chilhowee | 382 | 1 | 0 | |
| Northmoor | 375 | 0 | 0 | |
| Lanagan | 373 | 304 | 122 | HAA5, Total Organic Carbon |
| Ridgeway | 372 | 0 | 0 | |
| High Ridge | 372 | 19 | 3 | E. coli |
| Jamestown | 368 | 3 | 0 | |
| Argyle | 357 | 20 | 0 | |
| Bunceton | 354 | 9 | 4 | Gross Alpha |
| Clarksburg | 353 | 2 | 0 | |
| Leasburg | 353 | 3 | 0 | |
| Everton | 352 | 8 | 1 | E. coli |
| Galt | 351 | 12 | 1 | TTHM |
| St Mary | 350 | 1 | 0 | |
| Bellflower | 350 | 11 | 1 | Chlorine Dioxide |
| Creighton | 349 | 3 | 0 | |
| Kingsville | 345 | 1 | 0 | |
| Laclede | 345 | 22 | 0 | |
| Portage Des Sioux | 345 | 8 | 1 | Chlorine Dioxide |
| Fisk | 342 | 15 | 0 | |
| Williamsville | 342 | 4 | 0 | |
| Cape Fair | 342 | 226 | 8 | E. coli, Gross Alpha |
| Raymondville | 341 | 4 | 0 | |
| Mindenmines | 340 | 3 | 0 | |
| Cowgill | 335 | 9 | 3 | Chlorine, TTHM |
| Downing | 335 | 5 | 3 | Gross Alpha |
| Breckenridge | 333 | 5 | 0 | |
| Hume | 330 | 114 | 2 | Bromate |
| Chadwick | 325 | 2 | 0 | |
| Gravois Mills | 325 | 3 | 1 | E. coli |
| Calhoun | 324 | 10 | 8 | TTHM |
| Frankford | 323 | 6 | 1 | Chlorine |
| Wright City | 320 | 30 | 2 | Chlorine Dioxide, E. coli |
| Wyatt | 319 | 31 | 4 | Chlorine Dioxide |
| Ironton | 313 | 53 | 0 | |
| Callao | 311 | 35 | 0 | |
| Wardell | 310 | 14 | 3 | Chlorine Dioxide |
| Nellyville | 310 | 96 | 2 | Chlorine Dioxide |
| Eagle Rock | 310 | 21 | 1 | HAA5 |
| Painton | 309 | 20 | 5 | Chlorine Dioxide |
| Lake Delton | 306 | 0 | 0 | |
| Bosworth | 305 | 13 | 6 | Chlorine, Chlorine Dioxide, Nitrate-Nitrite |
| Bakersfield | 303 | 4 | 2 | Gross Alpha |
| Theodosia | 303 | 63 | 42 | Chlorine, HAA5, Total Organic Carbon |
| Clark | 300 | 2 | 0 | |
| Annapolis | 300 | 45 | 7 | HAA5, Total Organic Carbon |
| Blodgett | 300 | 134 | 34 | Chlorine, TTHM, Total Haloacetic Acids (HAA5) |
| Diggins | 300 | 9 | 0 | |
| High Hill | 300 | 0 | 0 | |
| Ellisville | 300 | 10 | 0 | |
| Cainsville | 290 | 12 | 0 | |
| Kingston | 290 | 2 | 0 | |
| Desoto | 290 | 25 | 0 | |
| Mayfield | 288 | 7 | 1 | Bromate |
| New Hampton | 283 | 3 | 1 | TTHM |
| Walker | 283 | 10 | 0 | |
| Prairie Hom | 280 | 10 | 0 | |
| Gasconade | 280 | 10 | 0 | |
| Linneus | 278 | 5 | 3 | TTHM |
| Centertown | 278 | 99 | 0 | |
| Risco | 278 | 25 | 5 | Chlorine Dioxide |
| Centerview | 272 | 0 | 0 | |
| Browning | 265 | 6 | 1 | Bromate |
| Forest City | 260 | 22 | 4 | TTHM |
| St Thomas | 260 | 9 | 1 | E. coli |
| Berger | 256 | 5 | 0 | |
| Curryville | 255 | 24 | 0 | |
| Spickard | 254 | 34 | 6 | TTHM |
| Marquand | 253 | 6 | 0 | |
| Easton | 250 | 2 | 0 | |
| Manhattan | 250 | 0 | 0 | |
| Frohna | 250 | 63 | 0 | |
| Schell City | 250 | 4 | 1 | Chlorine Dioxide |
| Excelsior Spring | 245 | 9 | 0 | |
| Bronaugh | 245 | 3 | 1 | Chlorine Dioxide |
| Laredo | 240 | 7 | 5 | TTHM |
| Grandin | 240 | 2 | 0 | |
| Turner | 240 | 1 | 1 | Chlorine Dioxide |
| Amazonia | 236 | 14 | 2 | Chlorine Dioxide |
| Sheridan | 235 | 13 | 6 | TTHM |
| Arrow Rock | 235 | 67 | 26 | TTHM |
| Ridgedale | 235 | 6 | 0 | |
| Mineral Point | 231 | 23 | 5 | Chlorine Dioxide, Total Organic Carbon |
| Skidmore | 230 | 3 | 1 | Chlorine Dioxide |
| St. Louis | 230 | 77 | 4 | Chlorine Dioxide, E. coli |
| Holland | 229 | 25 | 5 | Chlorine, Chlorine Dioxide |
| Whitewater | 228 | 4 | 0 | |
| Wyaconda | 227 | 6 | 0 | |
| Bates City | 225 | 3 | 0 | |
| Stotts City | 225 | 9 | 0 | |
| Preston | 225 | 141 | 1 | Chlorine Dioxide |
| Barnard | 220 | 1 | 0 | |
| Housonia | 220 | 7 | 0 | |
| Dadeville | 218 | 4 | 0 | |
| Centerville | 215 | 16 | 0 | |
| Cross Timbers | 215 | 59 | 6 | Chlorine, E. coli |
| Green Castle | 212 | 14 | 0 | |
| Koshkonong | 212 | 9 | 0 | |
| Mayview | 211 | 8 | 0 | |
| Clearmont | 210 | 10 | 4 | TTHM |
| Chula | 210 | 4 | 0 | |
| Meta | 210 | 5 | 0 | |
| Mokane | 208 | 21 | 0 | |
| Altamont | 207 | 15 | 0 | |
| Mendon | 207 | 17 | 0 | |
| Barnett | 207 | 22 | 4 | Gross Alpha |
| Asbury | 207 | 5 | 1 | Chlorine Dioxide |
| Silex | 206 | 256 | 143 | Chlorine, Chlorine Dioxide, HAA5 +1 more |
| Emma | 205 | 8 | 4 | TTHM |
| Birmingham | 200 | 6 | 0 | |
| Bogard | 200 | 5 | 0 | |
| Malta Bend | 200 | 21 | 2 | Chlorine Dioxide, TTHM |
| Fortuna | 200 | 63 | 14 | E. coli, Gross Alpha |
| Sedgewickville | 197 | 2 | 0 | |
| Parnell | 195 | 6 | 1 | TTHM |
| Glenwood | 195 | 28 | 1 | Bromate |
| Conception Jct | 192 | 13 | 0 | |
| Amoret | 190 | 16 | 11 | TTHM |
| Cuba City | 186 | 34 | 1 | E. coli |
| Halltown | 185 | 8 | 0 | |
| Hunnewell | 184 | 28 | 14 | TTHM, Total Haloacetic Acids (HAA5) |
| Newtown | 183 | 9 | 0 | |
| Blackwater | 181 | 52 | 22 | TTHM |
| Hurley | 178 | 42 | 0 | |
| Bolckow | 177 | 0 | 0 | |
| Belgrade | 175 | 3 | 0 | |
| Fenton | 173 | 33 | 10 | Chlorine, Chlorine Dioxide, Gross Alpha +1 more |
| Syracuse | 172 | 20 | 2 | Chlorine Dioxide, E. coli |
| Clayton | 172 | 0 | 0 | |
| Graham | 170 | 13 | 2 | Chlorine, Chlorine Dioxide |
| Elmo | 169 | 3 | 0 | |
| Vanduser | 168 | 39 | 0 | |
| Middletown | 167 | 10 | 2 | Chlorine, Chlorine Dioxide |
| Coffey | 166 | 9 | 7 | TTHM |
| Freistatt | 165 | 21 | 1 | Chlorine Dioxide |
| Nelson | 158 | 28 | 22 | TTHM |
| Hughesville | 158 | 5 | 0 | |
| Stella | 158 | 7 | 0 | |
| Maitland | 155 | 5 | 0 | |
| Crystal River | 155 | 22 | 0 | |
| Halfway | 151 | 2 | 0 | |
| Rhineland | 150 | 11 | 0 | |
| Tuscumbia | 150 | 0 | 0 | |
| Cedar Rapids | 150 | 0 | 0 | |
| Beaufort | 145 | 42 | 2 | Chlorine Dioxide, E. coli |
| Leopold | 142 | 0 | 0 | |
| Miami | 140 | 18 | 9 | E. coli, TTHM |
| Morrison | 140 | 24 | 1 | Chlorine Dioxide |
| Foristell | 140 | 20 | 7 | HAA5, Total Organic Carbon |
| Tina | 130 | 1 | 0 | |
| Bonnots Mill | 130 | 1 | 0 | |
| Caledonia | 130 | 15 | 0 | |
| Kingdom City | 128 | 6 | 0 | |
| Gilliam | 125 | 11 | 0 | |
| Collins | 125 | 4 | 0 | |
| Kirbyville | 125 | 17 | 6 | Gross Alpha |
| Flemington | 124 | 3 | 0 | |
| Blairstown | 123 | 18 | 2 | TTHM |
| Louisburg | 122 | 2 | 0 | |
| Jameson | 121 | 2 | 1 | TTHM |
| Myrtle | 120 | 13 | 1 | Chlorine |
| Mosby | 115 | 133 | 103 | Chlorine Dioxide, TTHM |
| Westboro | 115 | 3 | 0 | |
| Trego | 115 | 4 | 0 | |
| Mill Spring | 112 | 202 | 0 | |
| Irvine | 112 | 15 | 0 | |
| Defiance | 110 | 96 | 63 | Chlorine Dioxide, E. coli, Total Organic Carbon |
| Robertsville | 110 | 18 | 2 | Gross Alpha |
| Dudley | 107 | 3 | 0 | |
| St Robert | 103 | 63 | 0 | |
| Geenfield | 100 | 9 | 0 | |
| Overland Park | 100 | 0 | 0 | |
| Weldon Spring | 100 | 5 | 1 | Chlorine Dioxide |
| St Paul | 100 | 22 | 2 | HAA5 |
| Dittmer | 100 | 12 | 0 |
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.