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 |
|---|---|---|---|---|
| Lunenburg Water District | Lunenburg, MA | 7,145 | 28 | Detected |
| Darlington City of (Sc1610001) | Darlington, SC | 7,142 | 38 | Clean |
| Devils Lake City Of | Devils Lake, ND | 7,141 | 29 | Clean |
| Leray Town WD 1, 2, 4 | Watertown, NY | 7,140 | 3 | Detected |
| Clark County Cons PWSD 1 | Williamstown, MO | 7,140 | 14 | Clean |
| Muskegon Co Eastside Water System | Muskgon, MI | 7,135 | 6 | Clean |
| Fruitland City Of | Fruitland, ID | 7,135 | 197 | Clean |
| Gallipolis PWS | Gallipolis, OH | 7,134 | 4 | Detected |
| Rio Resort and Casino | Las Vegas, NV | 7,132 | 7 | Clean |
| West Boylston Water District | West Boylston, MA | 7,132 | 163 | Detected |
| Rochester | Rochester, MI | 7,130 | 9 | Clean |
| City of Crystal City | Crystal City, TX | 7,128 | 11 | Clean |
| Town of Providence Village | Forney, TX | 7,128 | 57 | Clean |
| Powell Valley Water District | Clay City, KY | 7,128 | 39 | Clean |
| Clinton | Clinton, IL | 7,128 | 76 | Clean |
| Nephi City | Nephi, UT | 7,122 | 99 | Clean |
| Brookings, City Of | Brookings, OR | 7,120 | 149 | Clean |
| City of Winters | Winters, CA | 7,115 | 8 | Detected |
| Lake Geneva Utility Commission | Lake Geneva, WI | 7,107 | 182 | Detected |
| City of Magnolia | Magnolia, TX | 7,107 | 74 | - |
| Lake Forest Utility District | Houston, TX | 7,106 | 4 | Detected |
| Cortland City PWS | Cortland, OH | 7,105 | 130 | Clean |
| Delphos City | Delphos, OH | 7,101 | 165 | Clean |
| Blythe Twp Municipal Authority | New Philadelphia, PA | 7,100 | 104 | Clean |
| Aqua Ohio - Blacklick | Westerville, OH | 7,100 | 19 | Clean |
| Saint Joseph | St. Joseph, MN | 7,100 | 19 | Clean |
| Wcwsa (Sc4510007) | Kingstree, SC | 7,099 | 19 | Clean |
| Willard City | Willard, OH | 7,099 | 10 | Clean |
| Cumberland Co Water District | Burkesville, KY | 7,099 | 393 | Clean |
| Town of Longboat Key | Longboat Key, FL | 7,098 | 28 | Detected |
| Western Greene County R W D | Walcott, AR | 7,095 | 18 | Clean |
| Lady Lake Central - Wps 1,2,3 | Lady Lake, FL | 7,090 | 85 | Detected |
| Nottingham Country MUD | Houston, TX | 7,089 | 12 | Clean |
| Marshall | Marshall, MI | 7,088 | 9 | Clean |
| Los Osos Community Services District | Los Osos, CA | 7,086 | 3 | Detected |
| Eldorado Area Water and Sanitation Dist. | Santa Fe, NM | 7,082 | 143 | Detected |
| Sullivan PWS | Sullivan, MO | 7,081 | 12 | Clean |
| Raccoon Water Company | Centralia, IL | 7,080 | 41 | Clean |
| Englewood-Hulls Water System, Inc. | Tuscaloosa, AL | 7,077 | 2 | Clean |
| Sylvester | Sylvester, GA | 7,076 | 38 | Clean |
| Muhlenberg Co Water District #3 | Bremen, KY | 7,075 | 44 | Detected |
| North Riverside | North Riverside, IL | 7,071 | 29 | Clean |
| Womelsdorf Robesonia Jt Auth | Newmanstown, PA | 7,070 | 600 | Clean |
| Ada Township | Ada, MI | 7,068 | 15 | Clean |
| Fort Shafter | Schofield Barracks, HI | 7,067 | 14 | Clean |
| Rockaway Boro Water Dept | Rockaway, NJ | 7,066 | 54 | Detected |
| Plum Creek | Austin, TX | 7,065 | 24 | Clean |
| Galveston County Wcid 8 | Santa Fe, TX | 7,065 | 6 | Detected |
| City of New Boston | New Boston, TX | 7,059 | 50 | Detected |
| Knott Co Water & Sewer District | Vicco, KY | 7,056 | 121 | Clean |