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 |
|---|---|---|---|---|
| Lahaina | Wailuku, HI | 20,065 | 243 | Clean |
| Bullock Pen Water District | Crittenden, KY | 20,048 | 127 | Detected |
| Bella Vista City Water System | Sierra Vista, AZ | 20,045 | 1,564 | Detected |
| Aqua Ohio - Tiffin | Marion, OH | 20,035 | 42 | Clean |
| Grayson County Water District | Leitchfield, KY | 20,033 | 186 | Clean |
| Hudson Water Supply | Hudson, MA | 20,032 | 285 | Detected |
| Germantown Water Utility | Germantown, WI | 20,027 | 329 | Clean |
| Wis Rapids Water Works & Lighting Comm | Wisconsin Rapids, WI | 20,000 | 29 | Clean |
| Bvu Authority | Bristol, VA | 20,000 | 24 | Clean |
| Weber State University - Ogden Campus | Pleasant View, UT | 20,000 | 14 | Clean |
| Bluffdale Water System | Bluffdale, UT | 20,000 | 115 | Clean |
| Ambler Boro Water Dept | Ambler, PA | 20,000 | 2,896 | Detected |
| Hermiston, City Of | Hermiston, OR | 20,000 | 168 | Detected |
| Franklin Square WD | Franklin Square, NY | 20,000 | 127 | Clean |
| Barnegat Twp Water Sewer | Barnegat, NJ | 20,000 | 204 | Clean |
| Seaside Heights Water DE | Seaside Heights, NJ | 20,000 | 32 | Clean |
| Beach Haven Water Dept | Beach Haven, NJ | 20,000 | 23 | Clean |
| Belmar Water Dept | Belmar, NJ | 20,000 | 96 | Detected |
| Salisbury Water Division | Salisbury, MA | 20,000 | 47 | Detected |
| Lewiston Orchards Irrigation Dist | Lewiston, ID | 20,000 | 180 | Clean |
| Okeechobee Utility Authority | Okeechobee, FL | 20,000 | 110 | Detected |
| Wheat Ridge Water District | Wheat Ridge, CO | 20,000 | 4 | - |
| Security Water District | Colorado Springs, CO | 20,000 | 246 | Detected |
| Pima Utilities | Phoenix, AZ | 20,000 | 259 | Clean |
| Rapides Parish Waterworks District 3 | Tioga, LA | 19,983 | 32 | Clean |
| Oneonta (Ub of the City Of) | Oneonta, AL | 19,971 | 34 | Clean |
| Dyersburg Water Dept | Dyersburg, TN | 19,970 | 32 | Clean |
| Ozark Utilities Board | Ozark, AL | 19,965 | 93 | Clean |
| Oregon City | Oregon, OH | 19,950 | 18 | Detected |
| Evergreen Park | Evergreen Park, IL | 19,943 | 10 | Clean |
| City of Crowley | Crowley, TX | 19,935 | 25 | Detected |
| Clackamas River Water - Clairmont | Clackamas, OR | 19,928 | 23 | Clean |
| Seminole County Northeast | Winter Park, FL | 19,925 | 55 | Clean |
| Jacksonville | Jacksonville, IL | 19,903 | 33 | Detected |
| Mokena | Mokena, IL | 19,887 | 51 | Clean |
| Sherwood, City Of | Sherwood, OR | 19,885 | 40 | Detected |
| New Castle Utilities | New Castle, IN | 19,880 | 32 | Clean |
| Norwood City PWS | Norwood, OH | 19,870 | 26 | Clean |
| Gladeville Utility District | Gladeville, TN | 19,813 | 50 | Clean |
| Boone, Town Of | Boone, NC | 19,811 | 73 | Detected |
| Commerce Township | Commerce Township, MI | 19,811 | 0 | Clean |
| Humboldt C.s.d. | Cutten, CA | 19,807 | 7 | Clean |
| Miamisburg City PWS | Miamisburg, OH | 19,790 | 8 | Clean |
| Central Point, City Of | Central Point, OR | 19,785 | 13 | Clean |
| Lake Zurich | Lake Zurich, IL | 19,759 | 260 | Detected |
| Northwestern W and SD - Toledo Svc | Bowling Green, OH | 19,758 | 31 | Clean |
| Waynesville, Town Of | Waynesville, NC | 19,758 | 33 | Clean |
| Woodstock | Woodstock, GA | 19,742 | 27 | Detected |
| Allendale Township | Allendale, MI | 19,725 | 2 | Clean |
| Sapulpa | Sapulpa, OK | 19,702 | 423 | Clean |