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 |
|---|---|---|---|---|
|
Westgate Water System Wyoming County |
150 | 3 | 1 | |
|
Audubon Park York County |
145 | 3 | 1 | |
|
Mahoning Valley Convalescent H Carbon County |
145 | 1 | 0 | |
|
Calamus Estates Lancaster County |
140 | 4 | 0 | |
|
Giorgi Farm 1 Transient Wells Berks County |
140 | 3 | 0 | |
|
Haines Woodward Municipal Auth Centre County |
140 | 4 | 1 | |
|
Poc Mtn Lake Est Sect 1e Pike County |
140 | 2 | 0 | |
|
Providence Place of Hazleton Luzerne County |
140 | 3 | 0 | |
|
Deann Village MHP Dauphin County |
135 | 10 | 0 | |
|
Brandywine Congregation York County |
130 | 2 | 1 | |
|
Oak Grove Park MHP Montgomery County |
130 | 3 | 0 | |
|
Somers Lane MHP Tioga County |
130 | 5 | 1 | |
|
Springhill Mobile Home Park Carbon County |
130 | 2 | 0 | |
|
Woodside Mobile Home Park Lehigh County |
130 | 2 | 0 | |
|
Pocono Mobile Home Estates Monroe County |
129 | 7 | 3 | |
|
Highland Campgrounds Wyoming County |
125 | 2 | 1 | |
|
Plateau Village MHP Lancaster County |
125 | 1 | 0 | |
|
Stoneyhill MHP Lancaster County |
124 | 3 | 0 | |
|
Aqua PA Water CO Pine Beach Wayne County |
122 | 2 | 0 | |
|
Rockledge One and Two Wayne County |
121 | 4 | 1 | |
|
Greentop Mobile Home Park Bucks County |
120 | 1 | 0 | |
|
Perryville Water Association Clarion County |
120 | 3 | 0 | |
|
Premise Maid Candies Lehigh County |
120 | 1 | 0 | |
|
ST Pauls United Methodist CH Berks County |
120 | 2 | 0 | |
|
Twin Pines Health Care Center Chester County |
120 | 4 | 0 | |
|
Victoria Manor Est Lancaster County |
120 | 2 | 1 | |
|
Village at Safe Harbor Lancaster County |
120 | 3 | 0 | |
|
Volant Borough Water Dept Lawrence County |
120 | 1 | 0 | |
|
Barton Court Monroe County |
118 | 3 | 0 | |
|
Fritzingertown SR Liv Comm #2 Luzerne County |
118 | 3 | 0 | |
|
The Gardens at Orangeville Columbia County |
118 | 2 | 0 | |
|
Mountain View Terrace York County |
117 | 1 | 0 | |
|
White Sand Springs Pike County |
115 | 2 | 0 | |
|
Leola Industrial Center Lancaster County |
110 | 2 | 0 | |
|
Majestic Heights Erie County |
110 | 2 | 0 | |
|
Milford Senior Care Pike County |
110 | 9 | 1 | |
|
Stone Valley Comm Charter Schl Huntingdon County |
110 | 2 | 1 | |
|
Aqua PA ST Johns Estates Luzerne County |
106 | 2 | 1 | |
|
Adamstown Rod & Gun Club Lancaster County |
100 | 1 | 0 | |
|
American Modern Homes Bradford County |
100 | 4 | 0 | |
|
Aspen Ridge Poa Wayne County |
100 | 3 | 0 | |
|
Bellefonte KOA Campground Centre County |
100 | 2 | 1 | |
|
Country Palace Jefferson County |
100 | 3 | 0 | |
|
Cross Station Mobile Home Comm Erie County |
100 | 6 | 0 | |
|
Darway Healthcare & Rehab Sullivan County |
100 | 7 | 1 | |
|
Days Inn Breezewood Bedford County |
100 | 3 | 0 | |
|
Fawn Valley South & North Monroe County |
100 | 3 | 1 | |
|
Graziellas Pizza & Subs Cumberland County |
100 | 1 | 0 | |
|
Harrisville United Meth Church Butler County |
100 | 3 | 1 | |
|
Health Ctr at Moselem Springs Berks County |
100 | 3 | 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.