All water systems in Pennsylvania
7,658 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Industry Boro Muni Auth Beaver County |
1,865 | 3 | 0 | |
|
Cheswick Boro Water Dept Allegheny County |
1,861 | 2 | 0 | |
|
Hatfield Quality Meats INC Montgomery County |
1,850 | 0 | 0 | |
|
Cornplanter Township Venango County |
1,835 | 1 | 0 | |
|
Sandy Township Clearfield County |
1,828 | 4 | 0 | |
|
Patton Boro Water Dept Cambria County |
1,805 | 3 | 0 | |
|
Adamstown Borough Lancaster County |
1,800 | 1 | 0 | |
|
Aqua PA Water CO Hawley Wayne County |
1,800 | 0 | 0 | |
|
Beech Creek Borough Authority Clinton County |
1,800 | 0 | 0 | |
|
Bern Twp Muni Auth Berks County |
1,800 | 1 | 0 | |
|
Grove Worldwide US LLC Franklin County |
1,800 | 4 | 2 | |
|
Twp of Upper Makefield Bucks County |
1,800 | 6 | 0 | |
|
Weis Markets East Berlin Adams County |
1,800 | 2 | 1 | |
|
Williamsburg Munic Auth Blair County |
1,800 | 1 | 0 | |
|
Camp Kresge on Beaver Lake Luzerne County |
1,785 | 3 | 1 | |
|
Ridgway Twp Water Auth Elk County |
1,763 | 2 | 0 | |
|
Wysox Twp Municipal Authority Bradford County |
1,763 | 3 | 0 | |
|
Pawc Blue MT Lake Monroe County |
1,753 | 0 | 0 | |
|
East Berlin Area Joint Auth Adams County |
1,750 | 4 | 1 | |
|
Ojrsd Owen J Roberts MS and HS Chester County |
1,750 | 1 | 0 | |
|
Wawa Store 158 Lancaster County |
1,750 | 0 | 0 | |
|
North Warren Muni Authority Warren County |
1,749 | 5 | 0 | |
|
Reade Twp Muni Auth Cambria County |
1,746 | 3 | 0 | |
|
Cbsd Central Bucks East HS Bucks County |
1,725 | 3 | 0 | |
|
Waterside Loysburg Water Suppl Bedford County |
1,724 | 4 | 0 | |
|
Braddock Boro Water Auth Allegheny County |
1,708 | 1 | 0 | |
|
Mont Alto Municipal Authority Franklin County |
1,705 | 3 | 0 | |
|
Plumstead Twp Patriots Ridge Bucks County |
1,704 | 1 | 0 | |
|
Camp Morasha Wayne County |
1,700 | 2 | 0 | |
|
Clymer Boro Muni Auth Indiana County |
1,700 | 2 | 0 | |
|
Covington Karthaus Girard a a Clearfield County |
1,700 | 2 | 0 | |
|
Richland Boro Water Supply Lebanon County |
1,700 | 0 | 0 | |
|
Shamokin Dam Borough Snyder County |
1,700 | 3 | 0 | |
|
US Army Garrison Cumberland County |
1,700 | 4 | 0 | |
|
Waterford Municipal Authority Erie County |
1,700 | 4 | 1 | |
|
Gilpin Twp Muni Auth Armstrong County |
1,680 | 1 | 0 | |
|
Saxton Muni Water Auth Bedford County |
1,675 | 7 | 1 | |
|
Blacklick Valley Muni Auth Cambria County |
1,650 | 4 | 1 | |
|
Blossburg Municipal Authority Tioga County |
1,650 | 3 | 0 | |
|
Constellation Nuclear Pwr Plnt Montgomery County |
1,650 | 1 | 0 | |
|
Southern Columbia Area School Columbia County |
1,650 | 1 | 0 | |
|
PA Amer Water CO Lake Heritage Adams County |
1,648 | 0 | 0 | |
|
Catawissa Municipal Water Auth Columbia County |
1,644 | 0 | 0 | |
|
Elverson Water Company Chester County |
1,641 | 3 | 0 | |
|
Leacock Twp Mun Auth Lancaster County |
1,640 | 2 | 0 | |
|
Pvsd High School Monroe County |
1,640 | 2 | 2 | |
|
Marsh Creek State Park Chester County |
1,630 | 4 | 2 | |
|
Bedford Twp Muni Auth Bedford County |
1,626 | 1 | 0 | |
|
Jennerstown Muni Auth Somerset County |
1,625 | 1 | 0 | |
|
Aqua PA Honeybrook Chester County |
1,600 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Pennsylvania records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.