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 |
|---|---|---|---|---|
| Keesler Air Force Base | Biloxi, MS | 8,006 | 2,534 | Detected |
| Gray Utility Service | Austin, TX | 8,004 | 68 | Clean |
| Ashland Water Utility | Ashland, WI | 8,000 | 252 | Clean |
| Milton Water Dept | Milton, VT | 8,000 | 12 | Clean |
| Roosevelt City Water System | Roosevelt, UT | 8,000 | 326 | Clean |
| Kittanning Suburb Jt Water Aut | Adrian, PA | 8,000 | 291 | Clean |
| Tamaqua Area Water Authority | Tamaqua, PA | 8,000 | 168 | Clean |
| Boyertown Muni Auth | Boyertown, PA | 8,000 | 251 | Clean |
| Croton on Hudson Village | Croton-On-Hudson, NY | 8,000 | 79 | Clean |
| Monticello Village | Monticello, NY | 8,000 | 143 | Detected |
| U.s.m.a. - Lusk System | Fort Montgomery, NY | 8,000 | 7 | Clean |
| Geneseo Village | NY | 8,000 | 300 | Clean |
| Catskill Village | Catskill, NY | 8,000 | 444 | Detected |
| Norwich City | Norwich, NY | 8,000 | 47 | Clean |
| Blair, City Of | Blair, NE | 8,000 | 112 | Detected |
| Jefferson County PWSD 5 | DE Soto, MO | 8,000 | 8 | Clean |
| Yarmouth Water District | Yarmouth, ME | 8,000 | 47 | Detected |
| East Lawrence Water Authority | Bedford, IN | 8,000 | 29 | Clean |
| Cuii - Twin Lakes | Demotte, IN | 8,000 | 62 | Clean |
| Western Illinois University | Macomb, IL | 8,000 | 68 | Clean |
| Mill Creek Water Reclamation District | Geneva, IL | 8,000 | 59 | Clean |
| Hailey Water and Sewer | Hailey, ID | 8,000 | 89 | Clean |
| Kaanapali | Waikoloa, HI | 8,000 | 18 | Clean |
| Gray Lodge Check Station | Gridley, CA | 8,000 | 2 | - |
| Barrontown W/A | Petal, MS | 7,999 | 1,414 | Clean |
| San Tan Mountain Casino Temporary Water System | Sacaton, 09 | 7,990 | 3 | - |
| The Woodlands MUD 1 | The Woodlands, TX | 7,989 | 12 | Clean |
| North Franklin Water Works | Crowville, LA | 7,989 | 23 | Clean |
| Guayanilla Urbano | Guayanilla, PR | 7,986 | 301 | Clean |
| Wagoner | Wagoner, OK | 7,982 | 134 | Clean |
| Benton Water & Sewer | Benton, KY | 7,981 | 327 | Clean |
| Accc Early Main Campus | Mays Landing, NJ | 7,978 | 34 | Clean |
| Harris-Fort Bend Counties MUD 3 | Houston, TX | 7,971 | 11 | Clean |
| Hertford County Rural Water | Winton, NC | 7,970 | 18 | Clean |
| Daviess County Rural Water | Washington, IN | 7,969 | 7 | Clean |
| Tdcj Coffield Unit | Huntsville, TX | 7,965 | 66 | Clean |
| Boonville PWS | Boonville, MO | 7,964 | 129 | Detected |
| Mims Water Treatment / North Brevard Co. | Viera, FL | 7,958 | 139 | Detected |
| Millersville Univ | Millersville, PA | 7,950 | 669 | Detected |
| Maynardville Water Dept | Maynardville, TN | 7,940 | 112 | Detected |
| Fosterburg Pwd | Alton, IL | 7,940 | 25 | Detected |
| Lincolnshire | Lincolnshire, IL | 7,940 | 17 | Clean |
| Poteau PWA | Poteau, OK | 7,939 | 281 | Clean |
| Whitinsville Water Company | Whitinsville, MA | 7,933 | 38 | Clean |
| St Joseph | St. Joseph, MI | 7,930 | 17 | Clean |
| Fircrest City Of | Fircrest, WA | 7,927 | 134 | Detected |
| Dexter PWS | Dexter, MO | 7,927 | 14 | Clean |
| Jefferson Waterworks | Jefferson, WI | 7,926 | 61 | Clean |
| Nibley City Water | Wellsville, UT | 7,926 | 236 | Clean |
| Pacific City Of | Buckley, WA | 7,925 | 16 | Clean |