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 |
|---|---|---|---|---|
| Bryan City | Bryan, OH | 8,729 | 11 | Clean |
| City of Live Oak | Live Oak, TX | 8,724 | 6 | Clean |
| Union Hill Water Association Inc | Redmond, WA | 8,720 | 312 | Clean |
| Hartsville City of (Sc1610003) | Hartsville, SC | 8,711 | 8 | Clean |
| Scappoose, City Of | Scappoose, OR | 8,710 | 92 | Clean |
| Beach Park | Beach Park, IL | 8,710 | 8 | Clean |
| Arizona Water Co - Bisbee | Phoenix, AZ | 8,707 | 32 | Detected |
| Clarendon Hills | Clarendon Hills, IL | 8,702 | 14 | Clean |
| Thief River Falls | Thief River Falls, MN | 8,701 | 109 | Detected |
| Grand Ledge, City Of | Grand Ledge, MI | 8,701 | 24 | Clean |
| York City of (Sc4610001) | York, SC | 8,700 | 107 | Detected |
| Dacusville-Cedar Rock Wt Co (Sc3920008) | Pickens, SC | 8,700 | 4 | Clean |
| Srns LLC a-Area (Sc0230501) | Aiken, SC | 8,700 | 10 | Clean |
| Municipal Water Auth Adams Twp | Mars, PA | 8,700 | 115 | Clean |
| Doylestown Boro Water Dept | Doylestown, PA | 8,700 | 210 | Detected |
| Oyster Bay WD | Oyster Bay, NY | 8,700 | 12 | Detected |
| Manalapan Twp - Knob Hill | Manalapan, NJ | 8,700 | 12 | Detected |
| U.S. Naval Academy | Annapolis, MD | 8,700 | 19 | Clean |
| Delta City Of | Delta, CO | 8,700 | 9 | Detected |
| Tract 349 Mutual Water Co. | Cudahy, CA | 8,700 | 14 | Detected |
| City of Lago Vista | Lago Vista, TX | 8,698 | 41 | Detected |
| Anthony W&SD | Anthony, NM | 8,691 | 270 | Clean |
| Quantico McB-Camp Barrett | McIncr, McB Quantico, VA | 8,689 | 19 | Detected |
| Green Valley Dwid | Sahuarita, AZ | 8,687 | 170 | Clean |
| Harris County MUD 132 | Houston, TX | 8,682 | 1 | Clean |
| MO American Tri State | Joplin, MO | 8,680 | 21 | Clean |
| Buena Vista Township | Saginaw, MI | 8,676 | 27 | Detected |
| Arley, Town Of | Arley, AL | 8,673 | 14 | Clean |
| Pewaukee City Water and Sewer Utility | Pewaukee, WI | 8,671 | 467 | Detected |
| Marbury Water System, Inc. | Marbury, AL | 8,670 | 20 | Detected |
| Town of Orange Park | Orange Park, FL | 8,668 | 64 | Clean |
| Kingsbridge MUD | Houston, TX | 8,663 | 375 | Detected |
| Caldwell County Water--West | Lenoir, NC | 8,662 | 37 | Clean |
| Gretna, City Of | Gretna, NE | 8,661 | 58 | Clean |
| Hoosier Hills Regional Water District | Milan, IN | 8,660 | 28 | Clean |
| Town of Livingston Water System | Livingston, LA | 8,658 | 53 | Clean |
| Indiana American Water - Charlestown | Greenwood, IN | 8,658 | 84 | Detected |
| Ldc Laguna Rt 66 Casino | Laguna, 06 | 8,658 | 99 | Clean |
| Arizona Water Co - Miami Claypool | Phoenix, AZ | 8,656 | 206 | Detected |
| Dtma Main System | Doylestown, PA | 8,655 | 203 | Detected |
| Aqua NJ - Lawrence | Hamilton, NJ | 8,655 | 346 | Detected |
| City of Brownfield | Brownfield, TX | 8,652 | 41 | Clean |
| Southwestern Bartholomew Water Corp. | Columbus, IN | 8,652 | 36 | Detected |
| West Frankfort | West Frankfort, IL | 8,650 | 62 | Clean |
| Chanute, City Of | Chanute, KS | 8,642 | 67 | Clean |
| Winfield Water Works & Sewer Board | Winfield, AL | 8,631 | 41 | Clean |
| Green Pond Water System | Green Pond, AL | 8,631 | 135 | Clean |
| West Overton Utility District | Rickman, TN | 8,628 | 39 | Clean |
| Naval Base Ventura County, Port Hueneme | Point Mugu, CA | 8,625 | 14 | - |
| Monona Waterworks | Monona, WI | 8,624 | 30 | Detected |