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 |
|---|---|---|---|---|
|
Regency Woods MHP Cumberland County |
450 | 2 | 1 | |
|
Fredonia Boro Mercer County |
443 | 3 | 1 | |
|
Big Spring Terrace MHP Cumberland County |
439 | 4 | 0 | |
|
Camp Starlight Wayne County |
425 | 3 | 1 | |
|
Blue Rocks Campground Berks County |
400 | 2 | 0 | |
|
Hamlin Water Company Wayne County |
400 | 6 | 0 | |
|
Heritage Village MHP Northampton County |
400 | 3 | 1 | |
|
Plumsteadville Shopping Center Bucks County |
400 | 4 | 1 | |
|
Ralston Area Joint Authority Lycoming County |
400 | 7 | 2 | |
|
Carlisle Church of Lds Cumberland County |
391 | 1 | 1 | |
|
Waterford Waterworks Westmoreland County |
389 | 8 | 0 | |
|
Hickory Hill Country Village Erie County |
375 | 9 | 0 | |
|
Cooperstown Water Company Venango County |
360 | 8 | 0 | |
|
Leraysville Water Company Bradford County |
360 | 4 | 0 | |
|
Henderson Township Mun Auth Jefferson County |
354 | 5 | 1 | |
|
Diamond Ridge Camp Bucks County |
350 | 3 | 0 | |
|
Green Twp Mun Auth-Commodore Indiana County |
350 | 2 | 1 | |
|
Wonderview Water CO Columbia County |
350 | 1 | 1 | |
|
Dave & Janes Adams County |
325 | 2 | 1 | |
|
Rew Water Association McKean County |
325 | 3 | 2 | |
|
Sandy Hill Estates Butler County |
325 | 6 | 1 | |
|
Blain Water CO Perry County |
321 | 2 | 0 | |
|
Holly Acres MHP Erie County |
315 | 3 | 1 | |
|
Missys Market Potter County |
300 | 3 | 1 | |
|
New Meadow Run Fayette County |
300 | 5 | 0 | |
|
Pennsylvania College of Tech Lycoming County |
300 | 4 | 1 | |
|
White Deer Golf Course Lycoming County |
300 | 2 | 1 | |
|
Green Twp Mun Auth Barr Slope Indiana County |
285 | 2 | 0 | |
|
Clarendon Acres Water CO Wyoming County |
280 | 7 | 2 | |
|
Country Pines MHP Luzerne County |
280 | 8 | 3 | |
|
Belfast Twp Muni Auth Fulton County |
276 | 3 | 0 | |
|
Southampton Twp Bldg & Park Cumberland County |
270 | 1 | 0 | |
|
Giorgio Fresh Berks County |
260 | 2 | 0 | |
|
North Dickinson Elem Sch Cumberland County |
253 | 3 | 1 | |
|
Benton Foundry INC Columbia County |
250 | 1 | 1 | |
|
Conneaut Lake Park Water Crawford County |
250 | 1 | 1 | |
|
Laurel Lake Camp & Retreat Ctr Indiana County |
250 | 3 | 2 | |
|
Osterburg Water CO Bedford County |
250 | 2 | 0 | |
|
Salem Lutheran Church Snyder County |
250 | 1 | 0 | |
|
Rixford Waterworks Association McKean County |
234 | 2 | 0 | |
|
Marion Twp Wtp Butler County |
225 | 4 | 0 | |
|
Dean Twp Water System Cambria County |
216 | 4 | 0 | |
|
Creekview MHP Chester County |
200 | 8 | 0 | |
|
Julia Ribaudo Extended Care Wayne County |
200 | 2 | 1 | |
|
Rajah Shrine Complex Berks County |
200 | 1 | 0 | |
|
Sunrise Trailer CT Lebanon County |
200 | 2 | 0 | |
|
Tioga Mobile Home Community Tioga County |
200 | 5 | 2 | |
|
Whites Haven Campground Jefferson County |
200 | 3 | 0 | |
|
Pinecrest Village MHP Lycoming County |
195 | 12 | 3 | |
|
Buckingham Vly Rehab & Nursing Bucks County |
190 | 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.