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 |
|---|---|---|---|---|
| Shaw Afb (Sc4310501) | Shaw Afb, SC | 5,125 | 66 | Detected |
| Caterpillar Trail Pwd | East Peoria, IL | 5,125 | 20 | Clean |
| Wasco St. Prison Reception Ctr | Wasco, CA | 5,124 | 8 | Clean |
| Brush City Of | Hillrose, CO | 5,122 | 26 | Clean |
| Joppa, Hulaco & Ryan Water Authority | Joppa, AL | 5,121 | 8 | Detected |
| Tdcj Ramsey Area | Huntsville, TX | 5,119 | 67 | Clean |
| Coker Water Authority | Coker, AL | 5,118 | 5 | Clean |
| Harris County MUD 179 | Houston, TX | 5,115 | 3 | Detected |
| Bronston Water Associaton Inc | Bronston, KY | 5,114 | 81 | Clean |
| Mayville Waterworks | Mayville, WI | 5,112 | 60 | Clean |
| Grays Harbor Co Water Dist 2 | Montesano, WA | 5,112 | 73 | Clean |
| Sl County Service Area No 3 - Snowbird | Millcreek, UT | 5,110 | 37 | Clean |
| Kure Beach Water System | Kure Beach, NC | 5,110 | 284 | Clean |
| Barling Waterworks | Barling, AR | 5,110 | 30 | Clean |
| Harris County Wcid 133 | Houston, TX | 5,109 | 3 | Clean |
| West Autauga Water Authority | Autaugaville, AL | 5,106 | 162 | Clean |
| Byesville | Byesville, OH | 5,104 | 528 | Clean |
| Nts Utility Association | Meridian, MS | 5,103 | 536 | Clean |
| Linden, the Ub of the City Of | Linden, AL | 5,103 | 20 | Clean |
| Northwest Rural Water District | Williston, ND | 5,102 | 26 | Detected |
| Richland Center Waterworks | Richland Center, WI | 5,100 | 10 | Clean |
| Vergennes Panton Water District | Shoreham, VT | 5,100 | 331 | Clean |
| Mayde Creek MUD | Houston, TX | 5,100 | 31 | Detected |
| City of Garden Ridge | Garden Ridge, TX | 5,100 | 74 | Clean |
| Aqua PA Flying Hills WA Sys | Bryn Mawr, PA | 5,100 | 138 | Detected |
| Rochester East | Rochester, MI | 5,100 | 8 | Clean |
| Aqua Illinois-Willowbrook | Kankakee, IL | 5,100 | 15 | Clean |
| California State Prison - Solano | Vacaville, CA | 5,100 | 10 | Clean |
| Brazoria County MUD 31 | Houston, TX | 5,097 | 0 | Clean |
| Aruz | Juana Diaz, PR | 5,097 | 259 | Detected |
| St. Clairsville, City of PWS | St. Clairsville, OH | 5,097 | 262 | Detected |
| Wattsville Water Authority | Wattsville, AL | 5,097 | 21 | Clean |
| Harris County MUD 276 | Houston, TX | 5,094 | 0 | Detected |
| Fisher Ferry Water District | Vicksburg, MS | 5,094 | 316 | Clean |
| Eclectic Water Works & Sewer Board | Eclectic, AL | 5,094 | 77 | Detected |
| City of Greendale Utilities | Greendale, IN | 5,092 | 23 | Clean |
| Keystone Postmaster Grid | Middleburg, FL | 5,092 | 20 | Clean |
| Denair Community Services District | Denair, CA | 5,090 | 25 | Clean |
| Fort Bend County MUD 119 | Houston, TX | 5,088 | 0 | Detected |
| Folly Beach City of (1010005) | Folly Beach, SC | 5,086 | 19 | Detected |
| Minterbrook | Tacoma, WA | 5,083 | 130 | Detected |
| Johnsonville City of (Sc2110011) | Johnsonville, SC | 5,083 | 19 | Clean |
| Lake Fork WSC | Yantis, TX | 5,082 | 39 | Clean |
| Cottonwood Creek MUD 1 | Austin, TX | 5,082 | 8 | - |
| Southeast Catawba County | Hickory, NC | 5,080 | 19 | - |
| Limon Town Of | Limon, CO | 5,080 | 37 | Clean |
| Manchester Water Supply | Manchester, IA | 5,077 | 7 | Clean |
| Circle Pines | Circle Pines, MN | 5,075 | 5 | Detected |
| Kingfisher | Kingfisher, OK | 5,073 | 1,260 | Clean |
| St Lucie County Util North County System | Fort Pierce, FL | 5,073 | 147 | - |