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 |
|---|---|---|---|---|
|
Cranberry Village MHP Butler County |
400 | 1 | 0 | |
|
Dushore Water Authority Sullivan County |
400 | 2 | 1 | |
|
PA Dutch Campground Berks County |
400 | 3 | 1 | |
|
Walmar Manor MHP York County |
400 | 7 | 0 | |
|
Whispering Hollow-South MHP Northampton County |
400 | 3 | 0 | |
|
Jones Twp Municipal Authority Elk County |
396 | 6 | 0 | |
|
Millfair Heights Water System Erie County |
390 | 4 | 0 | |
|
Umh Valley Stream Luzerne County |
384 | 4 | 0 | |
|
Deer Lake Citizens Assoc Schuylkill County |
380 | 3 | 0 | |
|
Riverview Estates Lehigh County |
375 | 3 | 0 | |
|
Sugar Creek Care Center Venango County |
356 | 1 | 0 | |
|
ST Marys Villa Nursing Home Lackawanna County |
353 | 2 | 1 | |
|
Broadtop City Water Auth Huntingdon County |
350 | 3 | 1 | |
|
Mount Rock Manor Franklin County |
350 | 2 | 0 | |
|
New Oxford Manor MHP Adams County |
350 | 5 | 0 | |
|
Oak Knoll Est MHP Dauphin County |
350 | 1 | 0 | |
|
Northridge at Camelback Monroe County |
330 | 4 | 2 | |
|
Bloss Township Waterworks Tioga County |
325 | 3 | 0 | |
|
Burnside Boro Water System Clearfield County |
325 | 3 | 0 | |
|
Classic Mini Mart and Bar Lancaster County |
325 | 1 | 0 | |
|
North Penn Liberty High School Tioga County |
325 | 2 | 0 | |
|
Village of Four Seasons Susquehanna County |
325 | 5 | 1 | |
|
Woodland Hills Wayne County |
320 | 6 | 0 | |
|
Evergreen Village MHP Northampton County |
316 | 3 | 0 | |
|
Ridgewood Manor MHP Lancaster County |
314 | 3 | 0 | |
|
Pillow Boro Auth Dauphin County |
312 | 4 | 0 | |
|
Tri Valley Eldo Lake Division Monroe County |
310 | 3 | 1 | |
|
Lancaster Est Lancaster County |
304 | 3 | 0 | |
|
Pine Manor MHP Dauphin County |
302 | 1 | 0 | |
|
Brandon Maintenance Venango County |
300 | 2 | 0 | |
|
Camp Nawakwa Adams County |
300 | 1 | 0 | |
|
Chesterbrook Academy Lancaster County |
300 | 1 | 0 | |
|
Halfmoon Water Association Centre County |
300 | 2 | 0 | |
|
Knox Township Munic Authority Jefferson County |
300 | 8 | 0 | |
|
Penn Twp Water Dist Centre County |
300 | 1 | 0 | |
|
Pocono Manor Inn Monroe County |
300 | 2 | 1 | |
|
Skytop Lodge INC Monroe County |
300 | 1 | 0 | |
|
Solebury School Bucks County |
300 | 1 | 0 | |
|
Somerset Estates MHP Somerset County |
300 | 2 | 0 | |
|
Tamarack & Spread Eagle MHP Lancaster County |
300 | 4 | 0 | |
|
Twin Lakes Utilities INC Pike County |
300 | 1 | 0 | |
|
Woodbury Water Authority Bedford County |
295 | 2 | 1 | |
|
Hershey Estates & Storage Lebanon County |
293 | 1 | 0 | |
|
Unionville Muni Waterworks Centre County |
290 | 2 | 0 | |
|
Highland Twp Municipal Auth Elk County |
286 | 3 | 2 | |
|
Twin Maples MHP Lebanon County |
280 | 2 | 1 | |
|
Dry Run Water Assn Franklin County |
278 | 4 | 1 | |
|
Lakeview Mobile Home Park Lancaster County |
275 | 2 | 0 | |
|
Mercersburg Sportsman Assn Franklin County |
275 | 2 | 0 | |
|
Tall Timbers Village M H P Lackawanna County |
275 | 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.