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 |
|---|---|---|---|---|
| Litchfield | Nashua, NH | 7,000 | 2 | Detected |
| Franklin Water Works | Franklin, NH | 7,000 | 367 | Clean |
| City of Richland | Richland, MS | 7,000 | 1,017 | Clean |
| City of Green Cove Springs WTP | Green Cove Springs, FL | 7,000 | 73 | Clean |
| Arrowhead Regional Medical Center | Colton, CA | 7,000 | 4 | - |
| Peter Pitchess Honor Rancho Detn. Ctr | Castaic, CA | 7,000 | 9 | Detected |
| Cherry Auction | Fresno, CA | 7,000 | 10 | - |
| Dillon City of (Sc1710001) | Dillon, SC | 6,998 | 4 | Clean |
| Oscoda Township | Oscoda, MI | 6,997 | 0 | Clean |
| Golden State WC - Cowan Heights | Anaheim, CA | 6,997 | 1 | Detected |
| West Shelby Water District | Simpsonville, KY | 6,994 | 66 | Detected |
| Harris County MUD 96 | Houston, TX | 6,993 | 2 | Clean |
| City of Kaufman | Kaufman, TX | 6,990 | 26 | Detected |
| Sagemeadow Utility District | Houston, TX | 6,987 | 21 | Detected |
| South Giles Utility District | Minor Hill, TN | 6,985 | 182 | - |
| Martins Ferry Public Water System | Martins Ferry, OH | 6,980 | 27 | Detected |
| Heber Public Utility District | Heber, CA | 6,979 | 51 | Clean |
| St. Louis, City Of | St. Louis, MI | 6,976 | 18 | Clean |
| Reid Road MUD 1 | Houston, TX | 6,969 | 1 | Clean |
| Pine Trails Utility | Austin, TX | 6,969 | 16 | Detected |
| City of Monahans | Monahans, TX | 6,953 | 22 | Clean |
| Hampstead Area Water | Atkinson, NH | 6,953 | 174 | Detected |
| Idabel PWA | Idabel, OK | 6,952 | 653 | Clean |
| North Cherokee WSC | Jacksonville, TX | 6,951 | 309 | Detected |
| Macon County Water Authority | Tuskegee, AL | 6,951 | 201 | Detected |
| Aqua Ohio - Huber Ridge PWS | Westerville, OH | 6,950 | 24 | Clean |
| Hephzibah | Hephzibah, GA | 6,941 | 119 | Clean |
| Southeast Regional Water Facility | Darien, IL | 6,940 | 2 | Clean |
| Manitou Springs City Of | Manitou Springs, CO | 6,938 | 121 | Clean |
| Kronenwetter Water & Sewer Utility | Kronenwetter, WI | 6,931 | 16 | Clean |
| Hyde Park Regional | Poughkeepsie, NY | 6,928 | 76 | Clean |
| Granite Falls City Of | Granite Falls, WA | 6,926 | 6 | Clean |
| Brazoria County MUD 6 | Houston, TX | 6,926 | 0 | Clean |
| Mendota | Mendota, IL | 6,926 | 171 | Clean |
| Farmington Water Association | Corinth, MS | 6,925 | 470 | Clean |
| Nevada Water Supply | Nevada, IA | 6,925 | 212 | Clean |
| Sabine Parish Water District 1 | Many, LA | 6,924 | 300 | Clean |
| West Harris County MUD 2 Chase | Houston, TX | 6,921 | 6 | Clean |
| City of Philadelphia | Philadelphia, MS | 6,921 | 248 | Clean |
| Concordia Waterworks District 1 | Ferriday, LA | 6,921 | 24 | Clean |
| Vanceburg Electric Plant Board | Vanceburg, KY | 6,921 | 146 | Clean |
| Porter Master Improvement Area | Youngstown, NY | 6,920 | 1 | Clean |
| Fort Bragg, City Of | Fort Bragg, CA | 6,919 | 12 | Clean |
| Black Bayou Water Assn. | Greenville, MS | 6,917 | 623 | Clean |
| Center Grove-Winchester Springs | Estill Springs, TN | 6,916 | 113 | Clean |
| Northwest Harris County MUD 15 | Houston, TX | 6,915 | 8 | Clean |
| Houston River Waterworks District 11 | Sulphur, LA | 6,915 | 33 | Clean |
| Princeville | Princeville, HI | 6,911 | 13 | Clean |
| City of Decatur Water Plant | Decatur, TX | 6,910 | 97 | Detected |
| Harris County MUD 189 | Houston, TX | 6,906 | 77 | Clean |