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 |
|---|---|---|---|---|
| Ramona Municipal WD | Ramona, CA | 37,047 | 2 | Clean |
| City of Princeton | Princeton, TX | 37,019 | 51 | Detected |
| Natick Water and Sewer Division | Natick, MA | 37,006 | 146 | Detected |
| Texarkana Water Utilities | Texarkana, TX | 37,000 | 26 | Clean |
| Penn State Univ | University Park, PA | 37,000 | 171 | Clean |
| City of Tupelo | Tupelo, MS | 37,000 | 59 | Clean |
| Jefferson Co Cons PWSD C 1 | Barnhart, MO | 37,000 | 4 | Clean |
| Calumet City | Calumet City, IL | 37,000 | 64 | Detected |
| Nas North Island & Nab Coronado | San Diego, CA | 36,990 | 9 | Clean |
| PA American Coatesville | Coatesville, PA | 36,960 | 81 | Detected |
| Sanlando (3 Wtps) | Altamonte Springs, FL | 36,953 | 72 | Clean |
| Mashpee Water District | Mashpee, MA | 36,922 | 8 | Detected |
| Richfield | Richfield, MN | 36,899 | 3 | Detected |
| Statesboro | Statesboro, GA | 36,846 | 22 | Clean |
| Rubidoux Community SD | Jurupa Valley, CA | 36,827 | 103 | Detected |
| Gulf Shores, the Ub of the City Of | Gulf Shores, AL | 36,798 | 8 | Clean |
| Paseo del Este MUD 1 | Austin, TX | 36,773 | 15 | Detected |
| Glasgow Water Company | Glasgow, KY | 36,766 | 327 | Clean |
| Northampton Bucks Co Mun Auth | Richboro, PA | 36,750 | 2,055 | Detected |
| Truckee-Donner PUD, Main | Truckee, CA | 36,730 | 6 | Detected |
| Inman Campobello W/D (4220002) | Inman, SC | 36,685 | 6 | Clean |
| Beloit City Of | Beloit, WI | 36,677 | 37 | Detected |
| Hoke Co Regional Water System | Raeford, NC | 36,640 | 1,523 | Detected |
| Guayama Urbano | Guayama, PR | 36,606 | 561 | Clean |
| Pine Valley Border Patrol Station | San Diego, CA | 36,604 | 3 | - |
| City of la Porte | La Porte, TX | 36,569 | 4 | Detected |
| Andover Water Dept | Andover, MA | 36,569 | 7 | Detected |
| Estero Municipal Improvement District | Foster City, CA | 36,556 | 7 | Clean |
| Del Rio Utilities Commission | Del Rio, TX | 36,506 | 115 | Clean |
| Bullhead City Mohave | Bullhead City, AZ | 36,330 | 2,669 | Detected |
| Laurens County W&S Comm (Sc3020001) | Laurens, SC | 36,314 | 21 | Detected |
| City of Punta Gorda | Punta Gorda, FL | 36,302 | 26 | Detected |
| Trussville Utilities | Trussville, AL | 36,300 | 7 | Clean |
| Juncos - Ceiba Sur | Juncos, PR | 36,277 | 2,179 | Detected |
| Roseville | Roseville, MN | 36,254 | 0 | Detected |
| Vineland Water & Sewer Utility | Vineland, NJ | 36,250 | 679 | Detected |
| Fair Oaks Water District | Fair Oaks, CA | 36,226 | 0 | Clean |
| Firgrove Mutual Inc | Puyallup, WA | 36,168 | 30 | Detected |
| Norwich Public Utilities | Norwich, CT | 36,163 | 97 | Detected |
| Panama City Water System | Panama City, FL | 36,139 | 19 | Clean |
| Easley Combined Util (Sc3910002) | Easley, SC | 36,098 | 27 | Clean |
| Kentwood | Kentwood, MI | 36,072 | 9 | Clean |
| Las Piedras Humacao | Humacao, PR | 36,032 | 259 | Detected |
| Nob Hill Water Association | Yakima, WA | 36,026 | 29 | Clean |
| Aguanga Market Water System | Aguanga, CA | 36,012 | 3 | - |
| Pottstown Borough Water Auth | Pottstown, PA | 36,000 | 172 | Detected |
| Yorktown Consold. Water Dist.#1 | Yorktown Heights, NY | 36,000 | 60 | Detected |
| Monroe Twp Utility Department | Monroe Township, NJ | 36,000 | 538 | Detected |
| Valparaiso Department of Water Works | Valparaiso, IN | 36,000 | 18 | Clean |
| Walker County Water Authority | Flintstone, GA | 36,000 | 8 | Detected |