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 |
|---|---|---|---|---|
| Lincoln Avenue Water Co. | Altadena, CA | 16,088 | 3 | - |
| Tuppers Plains/Chester Water District | Long Bottom, OH | 16,087 | 96 | Clean |
| Cunningham Utility District | Clarksville, TN | 16,068 | 22 | Clean |
| Richmond Hill | Richmond Hill, GA | 16,068 | 54 | Clean |
| King County Water District #49 | Burien, WA | 16,065 | 9 | Clean |
| Corbin Utilities Commission | Corbin, KY | 16,065 | 271 | Detected |
| East Laurel Water District | London, KY | 16,062 | 27 | Detected |
| Bellingham Dpw Water Sewer Division | Bellingham, MA | 16,061 | 78 | Detected |
| North Reading Water Dept. | North Reading, MA | 16,054 | 61 | Detected |
| Hereford Municipal Water System | Hereford, TX | 16,048 | 84 | Clean |
| Loudon Utilities Board | Loudon, TN | 16,047 | 26 | Clean |
| Bcwws 3A | Pompano Beach, FL | 16,046 | 34 | Detected |
| Chickasha Municipal Authority | Chickasha, OK | 16,036 | 265 | Clean |
| Hibbing | Hibbing, MN | 16,028 | 31 | Clean |
| West Monroe Water System | West Monroe, LA | 16,005 | 203 | Clean |
| Weston Municipal Utilities | Weston, WI | 16,000 | 159 | Detected |
| River Falls Waterworks | River Falls, WI | 16,000 | 9 | Clean |
| Highridge Water Auth | Blairsville, PA | 16,000 | 249 | Detected |
| Upper Southampton Mun Auth | Southampton, PA | 16,000 | 856 | Detected |
| Ravenna City PWS | Ravenna, OH | 16,000 | 12 | Detected |
| Legoland New York | Goshen, NY | 16,000 | 2 | - |
| Clay Wds | Clay, NY | 16,000 | 35 | Clean |
| Dayton Valley Water System | Dayton, NV | 16,000 | 4 | Clean |
| South River W Dept | South River, NJ | 16,000 | 100 | Detected |
| Unh/Durham Water Sys | Durham, NH | 16,000 | 9 | Clean |
| Grain Valley PWS | Grain Valley, MO | 16,000 | 30 | Clean |
| Flowing Wells Irrigation District | Tucson, AZ | 16,000 | 936 | Detected |
| Morongo | Banning, 09 | 16,000 | 65 | Clean |
| Carpinteria Valley Water District | Carpinteria, CA | 15,996 | 10 | Clean |
| Coal Creek Utility District | Newcastle, WA | 15,989 | 12 | Clean |
| Talty Sud | Forney, TX | 15,987 | 9 | Detected |
| Waycross | Waycross, GA | 15,987 | 32 | Clean |
| Hot Springs Village Waterworks | Hot Springs Village, AR | 15,985 | 0 | Clean |
| Jackson Co. Water Company-WTP | Jackson, OH | 15,984 | 34 | Clean |
| Oneonta City | Oneonta, NY | 15,954 | 14 | Clean |
| Menomonie Waterworks | Menomonie, WI | 15,950 | 468 | Clean |
| Grandville | Grandville, MI | 15,948 | 10 | Clean |
| City of la Palma | La Palma, CA | 15,948 | 8 | Clean |
| Ruidoso Water System | Ruidoso, NM | 15,947 | 671 | Detected |
| Indiana American Water - Crawfordsville | Greenwood, IN | 15,930 | 0 | Detected |
| Florence Water Company | Florence, AZ | 15,900 | 272 | Detected |
| Pluris-South Gate Utilities | Lakeland, FL | 15,897 | 18 | Detected |
| North Weld County WD | Lucerne, CO | 15,890 | 3 | Clean |
| Red Lion Municipal Authority | Red Lion, PA | 15,882 | 325 | Clean |
| Denville Twp Water Dept | Denville, NJ | 15,881 | 456 | Detected |
| Huron Twp | New Boston, MI | 15,879 | 1 | Clean |
| Sabana Hoyos | Arecibo, PR | 15,876 | 100 | Clean |
| Claremore | Claremore, OK | 15,873 | 342 | Clean |
| Aurora City - Cleveland PWS | Aurora, OH | 15,852 | 16 | Clean |
| Snoqualmie Water | Snoqualime, WA | 15,848 | 39 | Clean |