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 |
|---|---|---|---|---|
| Cass County PWSD 5 | Pleasant Hill, MO | 2,875 | 44 | - |
| Plymouth South High School | North Plymouth, MA | 2,875 | 124 | - |
| Worthington Fire District | Berlin, CT | 2,875 | 57 | - |
| Fort Bend County MUD 47 | Houston, TX | 2,874 | 2 | - |
| Almirante Sur | Vega Baja, PR | 2,873 | 153 | - |
| West Grove Borough | West Grove, PA | 2,873 | 429 | - |
| Maine Water Company Oakland Division | Poland, ME | 2,873 | 15 | - |
| N Central Amite Water Assn | Liberty, MS | 2,872 | 274 | - |
| Pleasant Ridge | Royal Oak, MI | 2,872 | 16 | - |
| Shirley WSC | Sulphur Springs, TX | 2,871 | 6 | - |
| City of Hamilton | Hamilton, TX | 2,871 | 66 | - |
| City of Elkhart | Elkhart, TX | 2,871 | 96 | - |
| Mount Hope Water Assoc | Tallsmanville, WV | 2,870 | 34 | - |
| Alto Lakes Water and Sanitation District | Alto, NM | 2,870 | 149 | Clean |
| City of Floydada | Floydada, TX | 2,868 | 28 | - |
| Hayneville (Town Of) | Hayneville, AL | 2,868 | 74 | - |
| Turner, City Of | Turner, OR | 2,866 | 25 | - |
| Lebanon Junction Water Works | Lebanon Junction, KY | 2,866 | 50 | - |
| City of Abernathy | Abernathy, TX | 2,865 | 47 | - |
| Santa Fe Opera Ground | Santa Fe, NM | 2,865 | 80 | - |
| Cloudcroft Water System | Cloudcroft, NM | 2,865 | 78 | - |
| City of Fairfield | Fairfield, TX | 2,864 | 43 | Clean |
| Gibson Co Mun Water Dist #5 | Trenton, TN | 2,864 | 23 | - |
| Knob Noster PWS | Knob Noster, MO | 2,863 | 37 | - |
| Fronton | Ciales, PR | 2,862 | 383 | - |
| Cheyenne Arapaho Concho | Concho, 06 | 2,862 | 18 | - |
| Tipton PWS | Tipton, MO | 2,861 | 48 | Clean |
| Mount Morris | Mt. Morris, IL | 2,861 | 200 | - |
| Gramercy Waterworks | Gramercy, LA | 2,860 | 233 | Detected |
| Sibley Public Water Supply | Sibley, IA | 2,860 | 25 | - |
| Harris County MUD 434 | Houston, TX | 2,859 | 0 | - |
| Central Claiborne Water System | Homer, LA | 2,859 | 46 | - |
| Trumbull Co. - Mineral Ridge PWS | Vienna, OH | 2,858 | 5 | - |
| Filer Water Works | Filer, ID | 2,858 | 276 | - |
| Western State Hospital | Port Orchard, WA | 2,857 | 65 | - |
| Desert Aire Owner Assn | Desert Aire, WA | 2,856 | 518 | - |
| Somerset Waterworks | Somerset, WI | 2,854 | 44 | - |
| NJ American Water - Belvidere | Cherry Hill, NJ | 2,854 | 20 | - |
| Four Oaks, Town Of | Four Oaks, NC | 2,854 | 159 | - |
| Jim Thorpe Borough Water East | Jim Thorpe, PA | 2,853 | 184 | - |
| Tonopah Public Utilities | Tonopah, NV | 2,853 | 32 | - |
| Heyworth | Heyworth, IL | 2,853 | 5 | - |
| Mission Brook SD | Northbrook, IL | 2,852 | 51 | - |
| PA Amer Water Co Fallbrook | Wilkes Barre, PA | 2,851 | 22 | - |
| Hays County Wcid 1 | Austin, TX | 2,850 | 5 | - |
| Deanville WSC | Deanville, TX | 2,850 | 345 | - |
| Nesquehoning Boro Water Auth | Nesquehoning, PA | 2,850 | 395 | - |
| Lindsay PWA | Lindsay, OK | 2,850 | 56 | - |
| Riverdale Boro Water Dep | Riverdale, NJ | 2,850 | 146 | - |
| Charlestown Water Works | Charlestown, NH | 2,850 | 37 | - |