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 |
|---|---|---|---|---|
| Floyd County | Rome, GA | 46,143 | 23 | Detected |
| IL American-Alton | Godfrey, IL | 46,127 | 17 | Detected |
| Washington City | Hurricane, UT | 45,865 | 201 | Clean |
| Woonsocket Water Division | Woonsocket, RI | 45,828 | 127 | Detected |
| Randolph/Holbrook Joint Water Board | Holbrook, MA | 45,767 | 16 | - |
| Brunswick Regional Water and Sewer H2go | Leland, NC | 45,748 | 56 | Clean |
| Opelika, Ww Bd. of the City Of | Opelika, AL | 45,621 | 67 | Detected |
| Urbandale Water Utility | Urbandale, IA | 45,605 | 11 | Clean |
| Riverton City Water System | Eagle Mountain, UT | 45,600 | 694 | Clean |
| Rome | Rome, GA | 45,586 | 21 | Detected |
| Indiana American Water - Noblesville | Greenwood, IN | 45,575 | 1 | Detected |
| Metropolitan Dwid | Tucson, AZ | 45,570 | 894 | Detected |
| City of San Jose - Nsj/Alviso | San Jose, CA | 45,559 | 10 | Clean |
| Evesham Mua | Marlton, NJ | 45,538 | 162 | Detected |
| South Brunswick Twp W Di | Monmouth Junction, NJ | 45,450 | 234 | Detected |
| Tukwila Water Department | Tukwila, WA | 45,374 | 0 | Clean |
| City of the Colony | The Colony, TX | 45,367 | 11 | Detected |
| Sayreville W Dept | Sayreville, NJ | 45,345 | 182 | Detected |
| Weir River Water System | Hingham, MA | 45,339 | 41 | Detected |
| Salisbury-Rowan | Salisbury, NC | 45,329 | 12 | Clean |
| Central ASG | Pago Pago, AS | 45,315 | 636 | Detected |
| Walton Co. Water & Sewer Auth. | Loganville, GA | 45,230 | 13 | Detected |
| North Sumter Utility 3Wps | The Villages, FL | 45,214 | 6 | Detected |
| Mdwasa/Rex Utilities | Miami, FL | 45,200 | 19 | Detected |
| Travis County Wcid 17 | Austin, TX | 45,165 | 24 | Detected |
| Golden State Water Company - Simi Valley | Rancho Cordova, CA | 45,128 | 0 | Clean |
| Aiken City of (0210001) | Aiken, SC | 45,090 | 88 | Clean |
| Veolia Mechanicsburg | Harrisburg, PA | 45,013 | 98 | Detected |
| Hca Hazleton Division | Hazleton, PA | 45,000 | 370 | Clean |
| Freeport (V) | Freeport, NY | 45,000 | 5 | Clean |
| Endicott Municipal Water Works | Endicott, NY | 45,000 | 11 | Clean |
| Elmhurst | Elmhurst, IL | 45,000 | 47 | Detected |
| Dekalb | Dekalb, IL | 45,000 | 105 | Clean |
| Kingman Municipal Water | Kingman, AZ | 45,000 | 451 | Clean |
| Fairfield City PWS | Fairfield, OH | 44,907 | 14 | Detected |
| Sebring Water ; Sewer System | Sebring, FL | 44,900 | 61 | Detected |
| Oildale MWC | Bakersfield, CA | 44,899 | 24 | Clean |
| St Bernard Parish Waterworks | Chalmette, LA | 44,783 | 285 | Clean |
| Brunswick | Brunswick, GA | 44,739 | 31 | Clean |
| Hawthorne-City Water Dept. | San Jose, CA | 44,718 | 8 | Clean |
| South Farmingdale WD | Farmingdale, NY | 44,700 | 1 | Clean |
| Gadsden, the Wwsb of the City Of | Gadsden, AL | 44,637 | 132 | Detected |
| Moorhead | Moorhead, MN | 44,583 | 2 | Detected |
| Moline | Moline, IL | 44,500 | 14 | Detected |
| Salem Water Department | Salem, MA | 44,480 | 7 | Detected |
| Lombard | Lombard, IL | 44,476 | 13 | Clean |
| US Army Garrison-Redstone Arsenal | Redstone Arsenal, AL | 44,472 | 474 | Detected |
| Ashland Water Works | Ashland, KY | 44,402 | 554 | Detected |
| Aqua NJ - Blackwood | Hamilton, NJ | 44,396 | 108 | Detected |
| Fond Du Lac Waterworks | Fond Du Lac, WI | 44,303 | 390 | Clean |