Groundwater Rule (GWR) violations in Pennsylvania
968 active public water systems in Pennsylvania had a Groundwater Rule (GWR) violation in the past three years, 256 of them in the latest quarter of EPA's data. What Groundwater Rule (GWR) is and why it matters.
Systems with a Groundwater Rule (GWR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Port Matilda Waterworks Centre County |
615 | 3 | 0 | |
|
Tioga Boro Municipal Authority Tioga County |
615 | 2 | 1 | |
|
Dayton Muni Water Dept Armstrong County |
600 | 4 | 0 | |
|
Hidden Valley Camping Resort Union County |
600 | 4 | 0 | |
|
Clarks Summit State Hospital Lackawanna County |
576 | 7 | 1 | |
|
Glencrest Mobile Home Park Lehigh County |
570 | 3 | 0 | |
|
Mapleton Muni Water Auth Huntingdon County |
570 | 6 | 1 | |
|
Creekside Subdivision Lancaster County |
556 | 1 | 0 | |
|
Indian Run Village MHP Chester County |
550 | 3 | 1 | |
|
Quincy Twp Water System Franklin County |
530 | 2 | 0 | |
|
Blue MT Ski Area Carbon County |
501 | 1 | 0 | |
|
Aqua PA Superior Center Point Montgomery County |
500 | 2 | 1 | |
|
Country Junction Carbon County |
500 | 4 | 0 | |
|
Lyons Boro Berks County |
500 | 1 | 0 | |
|
New Enterprise Water Assn Bedford County |
500 | 3 | 0 | |
|
Oneida Campground Susquehanna County |
500 | 3 | 1 | |
|
Pike County Correctional Facil Pike County |
500 | 6 | 0 | |
|
Rouseville Mun Waterworks Venango County |
500 | 5 | 0 | |
|
Rutters Farm Store 78 Franklin County |
500 | 2 | 0 | |
|
Lake Wallenpaupack Sandy Shore Wayne County |
499 | 3 | 1 | |
|
Mountain Water Authority Schuylkill County |
495 | 2 | 0 | |
|
Somerset Twp MA Reading Mines Somerset County |
494 | 3 | 0 | |
|
Edenville Water Assn INC Franklin County |
491 | 1 | 0 | |
|
Forrest Brooke MHP Mercer County |
491 | 1 | 0 | |
|
Echo Valley Estates Luzerne County |
490 | 4 | 1 | |
|
Fryburg Water Company Clarion County |
490 | 2 | 0 | |
|
Palm City Park Lebanon County |
490 | 9 | 1 | |
|
MT Gretna Auth Lebanon County |
485 | 3 | 0 | |
|
Valley View MHP Luzerne County |
480 | 2 | 0 | |
|
Brookside Village MHP Columbia County |
475 | 9 | 0 | |
|
Nottingham Manor M H Court Chester County |
473 | 3 | 0 | |
|
Crestwood Community Lancaster County |
470 | 1 | 0 | |
|
Highland S&w Auth Northern End Cambria County |
463 | 4 | 0 | |
|
Blue Heron Homeowners Assoc Carbon County |
450 | 8 | 0 | |
|
Grier School Huntingdon County |
450 | 2 | 0 | |
|
Lincolnwood MHP Berks County |
450 | 1 | 0 | |
|
Quincy Village System Franklin County |
450 | 1 | 0 | |
|
Spring Run Estates Wtp Chester County |
450 | 2 | 0 | |
|
West Hickory Water Company Forest County |
450 | 2 | 0 | |
|
Franklin Twp Muni Auth Adams County |
441 | 2 | 0 | |
|
Longwood Gardens Chester County |
440 | 5 | 0 | |
|
Heritage Hills MHP Lawrence County |
425 | 2 | 0 | |
|
Maxatawny Twp Muni Auth Berks County |
425 | 2 | 0 | |
|
Pine Valley Mobile Home Court Union County |
425 | 4 | 0 | |
|
Red Rock Job Corps Center Sullivan County |
425 | 4 | 0 | |
|
Walnut Grove MHC Adams County |
425 | 1 | 0 | |
|
Gretna Springs Lebanon County |
405 | 4 | 0 | |
|
Dudley Carbon Coalmont JM Auth Huntingdon County |
403 | 8 | 1 | |
|
Christian Retreat Ctr Juniata County |
400 | 3 | 1 | |
|
Country Acres MHP Lebanon County |
400 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Groundwater Rule (GWR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Groundwater Rule (GWR) alone.
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.