Public Water Systems
7,701 active public water systems in PA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Mt Union Municipal Auth | Mount Union, PA | 5,801 | 1,512 | Clean |
| Hellertown Borough Authority | Hellertown, PA | 5,800 | 473 | Clean |
| Beaver Boro Muni Auth | Beaver, PA | 5,799 | 617 | Detected |
| Hilltown Twp Water&sewer Auth | Sellersville, PA | 5,770 | 1,138 | Detected |
| PA American Water Co Kane | New Castle, PA | 5,725 | 2 | Clean |
| Lower Saucon Authority | Bethlehem, PA | 5,700 | 47 | Clean |
| Mahanoy Twp Auth | Mahanoy City, PA | 5,584 | 129 | Clean |
| Selinsgrove Muni Auth | Selinsgrove, PA | 5,584 | 364 | Clean |
| PA Am Water Co-Frackville Dist | Milton, PA | 5,583 | 8 | Detected |
| Duquesne Water Dept | Duquesne, PA | 5,565 | 136 | Clean |
| Aqua PA Water Co Honesdale | White Haven, PA | 5,500 | 617 | Clean |
| Greencastle Area Water Auth | Greencastle, PA | 5,500 | 263 | Clean |
| New Holland Borough | New Holland, PA | 5,500 | 221 | Detected |
| Birdsboro Muni Water Auth | Birdsboro, PA | 5,353 | 299 | Clean |
| Tunkhannock Boro Munic Auth | Tunkhannock, PA | 5,349 | 149 | Detected |
| Oxford Borough | Oxford, PA | 5,280 | 349 | Detected |
| Stewartstown Boro Water Auth | Stewartstown, PA | 5,206 | 575 | Detected |
| Schwenksville Borough Auth | Schwenksville, PA | 5,200 | 158 | Detected |
| Rockview Sci | Bellefonte, PA | 5,200 | 584 | Detected |
| Mun Auth of Boro of Bedford | Bedford, PA | 5,127 | 219 | Clean |
| Aqua PA Flying Hills WA Sys | Bryn Mawr, PA | 5,100 | 138 | Detected |
| Sharpsville Boro Water Co | Sharpsville, PA | 5,029 | 412 | Detected |
| Towanda Municipal Authority | Towanda, PA | 5,000 | 663 | Clean |
| Danville Municipal Water Auth | Danville, PA | 4,992 | 282 | Detected |
| Hamburg Muni Water&sewer Auth | Hamburg, PA | 4,990 | 295 | Clean |
| Montoursville Water Company | Montoursville, PA | 4,983 | 141 | Detected |
| Tarentum Boro Water Dept | Tarentum, PA | 4,927 | 152 | Clean |
| Central Indiana Co Water Auth | Homer City, PA | 4,920 | 101 | Clean |
| Upmc Magee Womens Hospital | Pittsburgh, PA | 4,900 | 37 | Detected |
| London Grove Twp Mun Auth | West Grove, PA | 4,770 | 117 | Detected |
| Buckingham Twp Cold Spring | Buckingham, PA | 4,760 | 54 | Detected |
| Upmc Shadyside Hillman Campus | Pittsburgh, PA | 4,750 | 52 | Clean |
| Shrewsbury Borough | Shrewsbury, PA | 4,727 | 754 | Detected |
| Ridgway Borough Water System | Ridgway, PA | 4,700 | 98 | Clean |
| Fawn Frazer Jt Water Auth | Natrona Heights, PA | 4,650 | 72 | Detected |
| PA American Water Kittanning | New Castle, PA | 4,617 | 9 | Clean |
| Freeland Boro Muni Water Auth | Freeland, PA | 4,610 | 324 | Detected |
| North East Borough Water Dept | North East, PA | 4,601 | 407 | Clean |
| Upper Hanover Water Authority | East Greenville, PA | 4,600 | 1,170 | Detected |
| Millersburg Water Auth | Millersburg, PA | 4,600 | 221 | Detected |
| North Sewickley Mun Water Auth | Beaver Falls, PA | 4,578 | 112 | Detected |
| Bear Creek Mountain Resort | Macungie, PA | 4,500 | 81 | - |
| Northern Cambria Muni Water | Northern Cambria, PA | 4,500 | 370 | Clean |
| Upmc Montefiore | Pittsburgh, PA | 4,500 | 36 | Clean |
| Pike Twp Municipal Authority | Curwensville, PA | 4,500 | 551 | Clean |
| Fairview Twp Water District 1 | Fairview, PA | 4,500 | 90 | Clean |
| New Wilmington Boro Water Dept | New Wilmington, PA | 4,500 | 20 | Clean |
| Seneca & Cranberry Mall Dist | Seneca, PA | 4,500 | 106 | Clean |
| Milford Twp Water Authority | Spinnerstown, PA | 4,497 | 161 | Detected |
| New Freedom Boro Water Auth | New Freedom, PA | 4,464 | 143 | Detected |