Public Water Systems
2,823 active public water systems in MO, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Desloge PWS | Desloge, MO | 5,034 | 8 | Clean |
| Ste Genevieve PWS | Ste Genevieve, MO | 4,999 | 48 | Clean |
| Clinton Co PWSD 4 Sys 1 | Lathrop, MO | 4,968 | 33 | Clean |
| Boone County PWSD 10 | Centralia, MO | 4,963 | 28 | Clean |
| Clay County PWSD 6 | Kearney, MO | 4,912 | 11 | Detected |
| Marion County PWSD 1 | Philadelphia, MO | 4,900 | 11 | Detected |
| Eldon PWS | Eldon, MO | 4,895 | 35 | Clean |
| Higginsville PWS | Higginsville, MO | 4,800 | 42 | Detected |
| Mountain Grove PWS | Mountain Grove, MO | 4,789 | 95 | Clean |
| Salem PWS | Salem, MO | 4,736 | 31 | Clean |
| Crystal City PWS | Crystal City, MO | 4,733 | 31 | Detected |
| Jefferson Co PWSD 8 | Cedar Hill, MO | 4,733 | 4 | Clean |
| Lexington PWS | Lexington, MO | 4,729 | 110 | Clean |
| Johnson County PWSD 3 | Warrensburg, MO | 4,700 | 15 | Clean |
| St Clair PWS | St Clair, MO | 4,700 | 84 | Detected |
| Platte City PWS | Platte City, MO | 4,691 | 21 | Detected |
| Scott City PWS | Scott City, MO | 4,653 | 26 | Detected |
| Cass County PWSD 2 | Belton, MO | 4,650 | 22 | Detected |
| Mount Vernon PWS | Mount Vernon, MO | 4,575 | 24 | Clean |
| North Kansas City PWS | North Kansas City, MO | 4,500 | 7 | Detected |
| Lamar PWS | Lamar, MO | 4,500 | 182 | Detected |
| Moscow Mills PWS | Moscow Mills, MO | 4,500 | 37 | - |
| Fredericktown PWS | Fredricktown, MO | 4,429 | 130 | Clean |
| Hollister PWS | Hollister, MO | 4,426 | 33 | Clean |
| California PWS | California, MO | 4,423 | 36 | Clean |
| Sullivan County PWSD 1 | Milan, MO | 4,412 | 2 | Clean |
| Dunklin County PWSD 1 | Campbell, MO | 4,307 | 57 | Clean |
| Herculaneum PWS | Herculaneum, MO | 4,227 | 13 | Detected |
| Butler PWS | Butler, MO | 4,219 | 52 | Detected |
| Bowling Green PWS | Bowling Green, MO | 4,195 | 38 | Detected |
| Cass County PWSD 7 | Freeman, MO | 4,143 | 5 | Detected |
| Brookfield PWS | Brookfield, MO | 4,111 | 85 | Detected |
| Jackson County PWSD 16 | Sibley, MO | 4,075 | 35 | Clean |
| Centralia PWS | Centralia, MO | 4,027 | 17 | Clean |
| Audrain County Consolidated PWSD 2 | Mexico, MO | 4,016 | 3 | - |
| Pulaski County PWSD 1 | Laquey, MO | 4,000 | 46 | Clean |
| Camdenton PWS | Camdenton, MO | 3,960 | 51 | Detected |
| Knox County Public Water & Sewer Dist 1 | Knox City, MO | 3,947 | 41 | Detected |
| St James PWS | St James, MO | 3,935 | 43 | Detected |
| Grundy County PWSD 1 | Trenton, MO | 3,900 | 33 | Clean |
| Montgomery Co PWSD 1 | Warrenton, MO | 3,850 | 82 | Clean |
| Harrison County PWSD 2 | Bethany, MO | 3,740 | 56 | Clean |
| Johnson County PWSD 1 | Warrensburg, MO | 3,730 | 7 | Clean |
| Ste Genevieve County PWSD 1 SC | Ste Genevieve, MO | 3,718 | 30 | Clean |
| Malden PWS | Malden, MO | 3,706 | 69 | Clean |
| Ashland PWS | Ashland, MO | 3,700 | 8 | Clean |
| Clinton County PWSD 3 | Cameron, MO | 3,615 | 31 | Detected |
| Palmyra PWS | Palmyra, MO | 3,595 | 7 | Clean |
| El Dorado Springs PWS | El Dorado Springs, MO | 3,593 | 69 | Clean |
| Andrew County PWSD 2 | Cosby, MO | 3,580 | 6 | Clean |