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 |
|---|---|---|---|---|
| Oak Lodge Water Services | Milwaukie, OR | 30,000 | 2 | Clean |
| Ossining Water Department | Ossining, NY | 30,000 | 311 | Detected |
| Middletown City | Middletown, NY | 30,000 | 30 | Clean |
| Guilderland Town WD | Guilderland, NY | 30,000 | 57 | Clean |
| Keene Water Dept | Keene, NH | 30,000 | 81 | Clean |
| Chaska | Chaska, MN | 30,000 | 5 | Clean |
| Town of Ocean City | Ocean City, MD | 30,000 | 26 | Clean |
| Chatham Water Department | Chatham, MA | 30,000 | 85 | Clean |
| Schererville Water Department | Schererville, IN | 30,000 | 23 | Clean |
| Crown Point Water Works | Crown Point, IN | 30,000 | 27 | Clean |
| South Stickny SD | Burbank, IL | 30,000 | 73 | Clean |
| Dania Beach, City Of | Dania Beach, FL | 30,000 | 139 | Detected |
| Pueblo West MD | Pueblo West, CO | 30,000 | 118 | Clean |
| Bear Creek WSD | Lakewood, CO | 30,000 | 0 | - |
| West Morgan-East Lawrence W&S Authority | Decatur, AL | 30,000 | 63 | Clean |
| Quil Ceda Village | Tulalip, 10 | 30,000 | 123 | Clean |
| Shawnee Municipal Authority | Shawnee, OK | 29,990 | 344 | Detected |
| Battle Ground Water Dept City Of | Battle Ground, WA | 29,974 | 911 | - |
| Valley Center MWD | Valley Center, CA | 29,938 | 7 | Clean |
| Clackamas River Water | Clackamas, OR | 29,918 | 85 | Clean |
| Norwood Water Dept. (Mwra) | Norwood, MA | 29,909 | 25 | Clean |
| Wheeling Water | Wheeling, WV | 29,899 | 132 | Detected |
| Makawao | Wailuku, HI | 29,868 | 304 | Clean |
| Jonah Water Sud | Hutto, TX | 29,861 | 69 | Detected |
| Calif State Polytechnical Univ - Pomona | Pomona, CA | 29,854 | 33 | - |
| Freehold Twp Water Dept | Freehold, NJ | 29,831 | 48 | Detected |
| Warren County Utility District | McMinnville, TN | 29,827 | 24 | Detected |
| Winchester Municipal Utilities | Winchester, KY | 29,823 | 275 | Clean |
| Upper Smith River Water Supply | Collinsville, VA | 29,721 | 9 | Clean |
| Ej Water Cooperative | Dieterich, IL | 29,720 | 97 | Detected |
| City of Converse | Converse, TX | 29,709 | 15 | Clean |
| Somerset Water Service | Somerset, KY | 29,700 | 210 | Clean |
| Madison Heights | Madison Heights, MI | 29,694 | 24 | Clean |
| City of Forney | Forney, TX | 29,692 | 65 | Detected |
| Pullman Water Department City Of | Pullman, WA | 29,690 | 15 | Clean |
| Clayton, Town Of | Clayton, NC | 29,689 | 121 | Detected |
| Kent City PWS | Kent, OH | 29,662 | 28 | Clean |
| Oak Park | Oak Park, MI | 29,654 | 2 | Detected |
| Cherokee MD | Colorado Springs, CO | 29,610 | 180 | Detected |
| City of Greenville | Greenville, MS | 29,602 | 1,345 | Clean |
| Mattapoisett River Valley W.D. | Mattapoisett, MA | 29,600 | 4 | Clean |
| San Juan Water District | Granite Bay, CA | 29,598 | 2 | Clean |
| Parkland Light & Water Company | Tacoma, WA | 29,595 | 76 | Detected |
| North Kona | Hilo, HI | 29,581 | 8 | Clean |
| City of Hutto | Hutto, TX | 29,580 | 25 | Clean |
| Northampton Water Division | Northampton, MA | 29,571 | 100 | Clean |
| Alexander City Water Department | Alexander City, AL | 29,565 | 51 | Clean |
| Oxford Water Works & Sewer Board | Oxford, AL | 29,556 | 23 | Detected |
| Wellesley Water Division | Wellesley, MA | 29,550 | 15 | Detected |
| City of East Palo Alto | East Palo Alto, CA | 29,519 | 23 | Clean |