Public Water Systems
143,076 active public water systems, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Highland Waterworks | Highland, WI | 842 | 28 | - |
| Seven Ranges Scout Reservation | Kensington, OH | 842 | 31 | - |
| McDonalds of Clinton | Morristown, NJ | 842 | 57 | - |
| Humphrey, City Of | Humphrey, NE | 842 | 279 | - |
| Sapa Water System | Eupora, MS | 842 | 29 | - |
| Youngs W/S Dist #2-Youngs Sys | Coffeeville, MS | 842 | 281 | - |
| Mazeppa | Mazeppa, MN | 842 | 4 | - |
| Dunkerton Muni Water Supply | Dunkerton, IA | 842 | 19 | - |
| Lago Vista Mobile Home Park | Aurora, CO | 842 | 17 | - |
| Hanna, Town Of | Hanna, WY | 841 | 25 | - |
| Prairie City | Prairie City, OR | 841 | 106 | - |
| Rockaway Beach PWS | Rockaway Beach, MO | 841 | 58 | - |
| Stoddard County PWSD 6 | Bernie, MO | 841 | 15 | - |
| Clarkfield | Clarkfield, MN | 841 | 28 | - |
| Menemsha Water Company | Chilmark, MA | 841 | 74 | - |
| Iowa Premium LLC | Tama, IA | 841 | 13 | Clean |
| Whippoorwill Bay Subdivision | Austin, TX | 840 | 13 | - |
| Feijo | Naranjito, PR | 840 | 161 | - |
| Bo.quebrada Arriba | Patillas, PR | 840 | 397 | - |
| Aqua PA Clarendon | Sharon, PA | 840 | 132 | - |
| Wallowa, City Of | Wallowa, OR | 840 | 47 | - |
| Mansfield Fuel and Food | Mansfield, OH | 840 | 7 | - |
| John F Kennedy High School | Yonkers, NY | 840 | 37 | - |
| Black Bear Golf Club | Hamburg, NJ | 840 | 41 | - |
| Ossipee Dunkin Donuts | Methuen, NH | 840 | 21 | - |
| Utica, Village Of | Utica, NE | 840 | 13 | - |
| Crawford, City Of | Crawford, NE | 840 | 56 | - |
| Trenton Water Users Assoc | Trenton, ND | 840 | 59 | - |
| Harmony Water Association #2 | Quitman, MS | 840 | 271 | - |
| Mdot - Hyde Rest Area | Kalamazoo, MI | 840 | 13 | - |
| Lake Chemung Outdoor Resort | Howell, MI | 840 | 0 | - |
| Pleasant Hills-Crossroads Water Systems | Joyce, LA | 840 | 916 | - |
| Varnado Water Works - Pine | Angie, LA | 840 | 13 | Clean |
| Lake Ramsey | Covington, LA | 840 | 125 | - |
| Ward IV Water District | Oakdale, LA | 840 | 6 | - |
| Riverton School | Riverton, KS | 840 | 15 | - |
| Amity Locust Grove Lds Church | White City, ID | 840 | 46 | - |
| E Shoshone County Water Dist Mullan | Wallace, ID | 840 | 9 | - |
| Winthrop Water Supply | Winthrop, IA | 840 | 104 | - |
| Rogers Mesa WC | Hotchkiss, CO | 840 | 107 | - |
| Cheyenne Wells Town Of | Cheyenne Wells, CO | 840 | 456 | - |
| Desert Gold RV Resort | Salome, AZ | 840 | 5 | - |
| Hays/White Cow Canyon WS | Harlem, 08 | 840 | 158 | - |
| Cds Rainmakers Util LLC Rancho Ruidoso | Alto, NM | 839 | 71 | - |
| Town of Inverness | Inverness, MS | 839 | 532 | - |
| Pilot Knob Rural WD 1 N & S | Farmington, MO | 839 | 49 | - |
| Haring Charter Township | Cadillac, MI | 839 | 25 | - |
| IL American-Hardin | Godfrey, IL | 839 | 82 | - |
| Heber Dwid | Heber, AZ | 839 | 225 | - |
| Rice Elementary School | Mountain Top, PA | 838 | 205 | - |
Download the SDWIS/UCMR5 state landscape snapshot cited on this page: sdwis-state-landscape.csv (same CSV as /statistics, CC0).