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 |
|---|---|---|---|---|
| Fort Oglethorpe | Fort Oglethorpe, GA | 8,313 | 40 | Detected |
| Potsdam Village | Potsdam, NY | 8,312 | 199 | Clean |
| Flushing, City Of | Flushing, MI | 8,311 | 12 | Clean |
| Harrodsburg Municipal Water Department | Harrodsburg, KY | 8,310 | 675 | Clean |
| Greenville | Greenville, IL | 8,310 | 96 | Clean |
| Cleburne County Water Authority | Heflin, AL | 8,307 | 4 | Clean |
| City of Floresville | Floresville, TX | 8,306 | 19 | Clean |
| Lowndes Co-South Lowndes | Valdosta, GA | 8,303 | 20 | Clean |
| Colchester Fire District 2 | Colchester, VT | 8,300 | 46 | Detected |
| Winston-Dillard Water District | Winston, OR | 8,300 | 41 | Clean |
| Newton Water & Sewer Utility | Newton, NJ | 8,300 | 267 | Clean |
| Spotswood W Dept | Spotswood, NJ | 8,300 | 87 | Detected |
| North Tazewell Pwd | East Peoria, IL | 8,300 | 172 | Clean |
| Prairie Path Water Co-Whispering Hills | McHenry, IL | 8,300 | 76 | Detected |
| Orosi Public Utility District | Orosi, CA | 8,300 | 19 | Clean |
| City of Orland | Orland, CA | 8,298 | 17 | Clean |
| Old Knoxville Hwy U.d. | Mohawk, TN | 8,296 | 21 | Detected |
| Harris County MUD 154 | Houston, TX | 8,289 | 52 | Clean |
| Oak Grove PWS | Oak Grove, MO | 8,289 | 41 | Clean |
| Grand Blanc, City Of | Grand Blanc, MI | 8,276 | 15 | Clean |
| Crete | Crete, IL | 8,275 | 26 | Clean |
| Trumbull Co. - Bazetta/Champion | Vienna, OH | 8,270 | 9 | Detected |
| Williamson County Wsid 3 | Austin, TX | 8,265 | 33 | Detected |
| Santa Fe Utility | New Waverly, TX | 8,265 | 0 | - |
| Pleasant Hill PWS | Pleasant Hill, MO | 8,262 | 71 | Detected |
| Harris County MUD 290 | Houston, TX | 8,259 | 0 | Clean |
| Center Line, City Of | Center Line, MI | 8,257 | 23 | Clean |
| Dalhart Municipal Water System | Dalhart, TX | 8,256 | 21 | Clean |
| Umatilla, City Of | Umatilla, OR | 8,256 | 114 | Clean |
| North Hopkins WSC | Sulphur Springs, TX | 8,253 | 47 | Clean |
| Mason, City Of | Mason, MI | 8,252 | 54 | Clean |
| Franklin County PWSD 3 | Villa Ridge, MO | 8,250 | 36 | Clean |
| Lafayette County PWSD 1 | Odessa, MO | 8,250 | 8 | Clean |
| Rural Membership Water Corp. of Clark Co | Henryville, IN | 8,250 | 41 | Clean |
| New Prague | New Prague, MN | 8,247 | 21 | Clean |
| Mountain Regional Water Ssd | Park City, UT | 8,245 | 984 | Detected |
| City of Corning | Corning, CA | 8,244 | 31 | Clean |
| La Puente Valley Cwd | La Puente, CA | 8,243 | 1 | Clean |
| Erin Water Department | Erin, TN | 8,239 | 242 | Detected |
| Bellevue City | Bellevue, OH | 8,236 | 53 | Detected |
| Louisa Water Department | Louisa, KY | 8,236 | 121 | Clean |
| Rhinelander Water & Wastewater | Rhinelander, WI | 8,234 | 333 | Detected |
| Mammoth Cwd | Mammoth Lakes, CA | 8,234 | 13 | Clean |
| Orangefield WSC | Orangefield, TX | 8,231 | 76 | Clean |
| Sioux Center Municipal Water Department | Sioux Center, IA | 8,231 | 21 | Clean |
| Marianna, City Of | Marianna, FL | 8,227 | 43 | Detected |
| Lewisburg Bellevue Water System | Opelousas, LA | 8,226 | 21 | Clean |
| Wellsboro Municipal Authority | Wellsboro, PA | 8,225 | 688 | Clean |
| Alachua WTP | Alachua, FL | 8,220 | 50 | Clean |
| Dewhite Utility District | Sparta, TN | 8,219 | 28 | Detected |