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 |
|---|---|---|---|---|
| Cerrillos | Ponce, PR | 5,500 | 135 | Clean |
| New Holland Borough | New Holland, PA | 5,500 | 221 | Detected |
| Greencastle Area Water Auth | Greencastle, PA | 5,500 | 263 | Clean |
| Aqua PA Water Co Honesdale | White Haven, PA | 5,500 | 617 | Clean |
| Deer Creek Rural Water Corp | Edmond, OK | 5,500 | 134 | Clean |
| Ulster Water District | Lake Katrine, NY | 5,500 | 67 | Clean |
| Tupper Lake V | Tupper Lake, NY | 5,500 | 479 | Clean |
| Jal Water Supply System | Jal, NM | 5,500 | 206 | - |
| Franklin Bd of Public Works | Franklin, NJ | 5,500 | 81 | Clean |
| Resorts Atlantic City | Atlantic City, NJ | 5,500 | 59 | Clean |
| North Conway Water Pct | North Conway, NH | 5,500 | 126 | Clean |
| Edenton, Town Of | Edenton, NC | 5,500 | 224 | Clean |
| Jasper County PWSD 1 | Carl Junction, MO | 5,500 | 18 | Clean |
| Gm Proving Grounds Well 5, 7, 8, 9 | Milford, MI | 5,500 | 11 | Clean |
| Lansing Township | Lansing, MI | 5,500 | 10 | Clean |
| Cheboygan, City Of | Cheboygan, MI | 5,500 | 31 | Clean |
| Lavale Sanitary Commission | Lavale, MD | 5,500 | 54 | Clean |
| New Chicago Water Works | Hobart, IN | 5,500 | 31 | Clean |
| Watseka | Watseka, IL | 5,500 | 91 | Clean |
| Eastern Illinois University | Charleston, IL | 5,500 | 46 | Clean |
| Millview County Water District | Ukiah, CA | 5,500 | 6 | Clean |
| Maywood Mutual Water Co. #1 | Huntington Park, CA | 5,500 | 8 | Detected |
| Rosebud Rural Water System | Rosebud, 08 | 5,500 | 132 | Clean |
| Saint Regis Mohawk Tribe | Akwesasne, 02 | 5,500 | 46 | Clean |
| Cinco Southwest MUD 2 | Houston, TX | 5,496 | 0 | Detected |
| Hiawassee | Hiawassee, GA | 5,496 | 12 | Clean |
| East Central Baldwin County Water & Fpa | Robertsdale, AL | 5,496 | 566 | Clean |
| McKenzie Water Dept | McKenzie, TN | 5,495 | 35 | Clean |
| Williamstown Municipal Water Dept | Dry Ridge, KY | 5,495 | 180 | Clean |
| Tryon, Town Of | Tryon, NC | 5,494 | 229 | Clean |
| Montesano City Of | Montesano, WA | 5,492 | 25 | Clean |
| North Bainbridge Water Co | Poulsbo, WA | 5,490 | 701 | Clean |
| City of Cameron | Cameron, TX | 5,489 | 368 | Detected |
| Macon PWS | Macon, MO | 5,489 | 61 | Detected |
| Worland Utilities Commission | Worland, WY | 5,487 | 19 | Clean |
| Harris County MUD 502 | Houston, TX | 5,487 | 8 | - |
| Harris County MUD 163 | Houston, TX | 5,487 | 12 | Detected |
| Harris County MUD 5 | Houston, TX | 5,487 | 9 | Clean |
| Algona Municipal Utilities | Algona, IA | 5,487 | 67 | Clean |
| Spring Valley Water Authority | Tuscumbia, AL | 5,487 | 30 | Detected |
| Ho Chunk Casino | Black River Falls, WI | 5,486 | 0 | Clean |
| Dare Co-Cape Hatteras Water | Kill Devil Hills, NC | 5,486 | 18 | Clean |
| St. Clair, City Of | St. Clair, MI | 5,485 | 25 | Clean |
| Northeast Mount Vernon Water Company | Mt Vernon, IL | 5,483 | 23 | Detected |
| Cedro Arriba | Naranjito, PR | 5,482 | 623 | Clean |
| Kingsford | Kingsford, MI | 5,480 | 33 | Detected |
| Ahoskie, Town Of | Ahoskie, NC | 5,479 | 146 | Clean |
| Chelsea | Chelsea, MI | 5,474 | 24 | Clean |
| Massanutten Village | Harrisonburg, VA | 5,472 | 35 | Clean |
| Montgomery County MUD 8 | Houston, TX | 5,472 | 20 | Clean |