Surface Water Treatment Rule (SWTR) violations in Pennsylvania
153 active public water systems in Pennsylvania had a Surface Water Treatment Rule (SWTR) violation in the past three years, 31 of them in the latest quarter of EPA's data. What Surface Water Treatment Rule (SWTR) is and why it matters.
Systems with a Surface Water Treatment Rule (SWTR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Findlay Twp Municipal Auth Allegheny County |
11,460 | 6 | 0 | |
|
LV Hospital Cedar Crest Lehigh County |
8,425 | 2 | 2 | |
|
Conemaugh Twp Muni Auth Somerset County |
7,800 | 11 | 0 | |
|
Portage Boro Muni Auth Cambria County |
6,500 | 9 | 0 | |
|
MT Union Municipal Auth Huntingdon County |
5,801 | 5 | 1 | |
|
Union City Municipal Authority Erie County |
4,295 | 6 | 0 | |
|
Raccoon Creek State Park Beaver County |
4,000 | 6 | 1 | |
|
Borough of Cornwall Lebanon County |
3,343 | 3 | 0 | |
|
Ligonier Twp Muni Auth Westmoreland County |
3,293 | 8 | 0 | |
|
State Corr Inst Benner Twp Centre County |
2,850 | 2 | 0 | |
|
Western Clinton CO Mun Auth Clinton County |
2,610 | 9 | 1 | |
|
Bentleyville Muni Auth Washington County |
2,600 | 4 | 1 | |
|
Irvona Municipal Authority Clearfield County |
1,980 | 4 | 0 | |
|
Sandy Township Clearfield County |
1,828 | 4 | 0 | |
|
MT Morris Water & Sewage Auth Greene County |
1,500 | 5 | 0 | |
|
Sykesville Borough Jefferson County |
1,500 | 5 | 1 | |
|
Freedom Twp Water & Sewer Blair County |
1,400 | 3 | 0 | |
|
Galeton Borough Authority Potter County |
1,200 | 5 | 1 | |
|
Polk Center Venango County |
1,058 | 13 | 0 | |
|
Southwest Warren CO Mun Auth Warren County |
1,040 | 4 | 1 | |
|
Donegal Township Washington County |
820 | 7 | 1 | |
|
Wood Broad Top Wells Jmun Auth Huntingdon County |
800 | 4 | 1 | |
|
Austin Borough Water Potter County |
700 | 5 | 2 | |
|
Jenner Twp Muni Auth Somerset County |
576 | 4 | 1 | |
|
Pinecrest Village MHP Lycoming County |
195 | 12 | 3 | |
|
Laurel Mountain Borough Westmoreland County |
110 | 3 | 0 | |
|
Gillett MHC Bradford County |
100 | 10 | 1 | |
|
Manufacturers Golf & CC Montgomery County |
100 | 2 | 1 | |
|
Penns Cave Centre County |
75 | 5 | 0 | |
|
Shawnee ST Park Bedford County |
50 | 3 | 0 | |
|
Cent Clinton CO Water Fil Auth Clinton County |
25 | 3 | 0 | |
|
Erie City Water Authority Erie County |
220,001 | 3 | 0 | |
|
Mawc Sweeney Plant Westmoreland County |
143,000 | 2 | 0 | |
|
Mawc Yough Plant Fayette County |
133,000 | 2 | 0 | |
|
City of Lancaster Lancaster County |
120,000 | 2 | 0 | |
|
Lca Allentown Division Lehigh County |
118,000 | 3 | 0 | |
|
City of Bethlehem Northampton County |
117,259 | 1 | 0 | |
|
State College Boro Water Auth Centre County |
72,000 | 5 | 0 | |
|
Greater Johnstown WA Riverside Cambria County |
49,500 | 7 | 0 | |
|
West Cnty Muni Auth-McKeesport Allegheny County |
32,644 | 3 | 0 | |
|
Pittsburgh Intl Airport Allegheny County |
26,915 | 5 | 0 | |
|
Carlisle Water Trmt Plt Cumberland County |
26,000 | 3 | 0 | |
|
Ambler Boro Water Dept Montgomery County |
20,000 | 2 | 0 | |
|
Ambridge Water Auth Beaver County |
19,500 | 6 | 0 | |
|
Bradford City Water Authority McKean County |
18,500 | 6 | 1 | |
|
Phoenixville Water Dept Chester County |
16,599 | 8 | 0 | |
|
Robinson Twp Muni Auth Allegheny County |
16,354 | 4 | 0 | |
|
Highridge Water Auth Westmoreland County |
16,000 | 5 | 0 | |
|
Red Lion Municipal Authority York County |
15,882 | 4 | 0 | |
|
Warwick Twp Water & Sewer Auth Bucks County |
14,699 | 3 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Surface Water Treatment Rule (SWTR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Surface Water Treatment Rule (SWTR) 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.