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 |
|---|---|---|---|---|
|
Oakwood Lake Village MHP Wyoming County |
273 | 6 | 2 | |
|
Halifax Village Dauphin County |
272 | 9 | 0 | |
|
Hoffman Homes for Youths INC Adams County |
270 | 2 | 0 | |
|
Aqua PA Franklin Chester County |
265 | 2 | 0 | |
|
Nis Hollow Estates Carbon County |
265 | 2 | 0 | |
|
Pine Grove Estates Wayne County |
263 | 7 | 0 | |
|
Allegheny East Conf Berks County |
260 | 5 | 0 | |
|
Glen Campbell Water Works Indiana County |
260 | 3 | 1 | |
|
Lehigh Twp Muni Auth Northampton County |
260 | 1 | 0 | |
|
Meadville Housing Northgate Crawford County |
256 | 1 | 0 | |
|
Awc Valley Forge Crossing MHP Montgomery County |
250 | 4 | 0 | |
|
Buttonwood Farm & CG Juniata County |
250 | 2 | 0 | |
|
Conewago Twp Elem Sch Dauphin County |
250 | 1 | 0 | |
|
Coventry Terrace Chester County |
250 | 3 | 0 | |
|
Malvern Courts MHP Chester County |
250 | 3 | 0 | |
|
Meadows Mobile Home Park Westmoreland County |
250 | 6 | 3 | |
|
New Morgan Boro Util Auth Berks County |
250 | 3 | 1 | |
|
Paramount Senior Living Adams County |
250 | 2 | 0 | |
|
Spring Valley Fayette County |
250 | 5 | 0 | |
|
W Freedom Water Assn Clarion County |
250 | 5 | 0 | |
|
Loysville Youth Dev Ctr Perry County |
249 | 6 | 0 | |
|
Sunshine Hills Water CO Perry County |
248 | 3 | 0 | |
|
Pine Grove Mobile Home Park Mercer County |
244 | 3 | 0 | |
|
Autumn Grove Care Center Butler County |
240 | 1 | 0 | |
|
Blue Knob ST Park Bedford County |
240 | 3 | 1 | |
|
Willow Haven North MHP Northampton County |
240 | 2 | 0 | |
|
Eagle View MHP Adams County |
230 | 4 | 0 | |
|
Brookmont Health Care Center Monroe County |
229 | 1 | 0 | |
|
James Dorwart Apts York County |
226 | 2 | 0 | |
|
Adams Twp Municipal Authority Snyder County |
225 | 1 | 0 | |
|
Country Place MHP Clearfield County |
225 | 4 | 0 | |
|
Independence Park Beaver County |
225 | 5 | 0 | |
|
Pocono Ranch Lands Sect 4 Pike County |
225 | 4 | 2 | |
|
West Sheffield Water Assn Warren County |
225 | 1 | 0 | |
|
Crestview Village MHP Dauphin County |
223 | 9 | 0 | |
|
Duncan Twp Municipal Authority Tioga County |
220 | 6 | 0 | |
|
Somerset Twp Mun Auth Listie Somerset County |
218 | 5 | 0 | |
|
Cypress Park Carbon County |
210 | 2 | 1 | |
|
Sugarcreek Water CO Venango County |
205 | 2 | 0 | |
|
Blue Mountain Academy Berks County |
200 | 2 | 0 | |
|
Bryn Gweled Homesteads Bucks County |
200 | 2 | 0 | |
|
Camp Sherwin Erie County |
200 | 2 | 1 | |
|
Canal Mobile Home Park Wayne County |
200 | 3 | 0 | |
|
Cobbs Lake Preserve Wayne County |
200 | 5 | 1 | |
|
Coral Ridge Estates MHP Butler County |
200 | 3 | 0 | |
|
Forest Brook MHP Beaver County |
200 | 7 | 0 | |
|
Lebanon Country Club Lebanon County |
200 | 3 | 1 | |
|
Newberry Est York County |
200 | 1 | 0 | |
|
Quality Custom Kitchens Lancaster County |
200 | 1 | 0 | |
|
Rainsburg Borough Water Bedford County |
200 | 1 | 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.