Interim Enhanced Surface Water Treatment Rule violations in Pennsylvania
92 active public water systems in Pennsylvania had a Interim Enhanced Surface Water Treatment Rule violation in the past three years, 17 of them in the latest quarter of EPA's data. What Interim Enhanced Surface Water Treatment Rule is and why it matters.
Systems with a Interim Enhanced Surface Water Treatment Rule violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ligonier Twp Muni Auth Westmoreland County |
3,293 | 8 | 0 | |
|
Gallitzin Boro Water Auth Cambria County |
3,130 | 8 | 0 | |
|
Bcwsa New Hope Bucks County |
3,017 | 2 | 0 | |
|
Mansfield University Tioga County |
3,000 | 5 | 0 | |
|
Reynoldsville Water Auth Jefferson County |
2,908 | 4 | 0 | |
|
Meyersdale Muni Auth Somerset County |
2,566 | 5 | 0 | |
|
Milford Water Authority Pike County |
2,420 | 3 | 0 | |
|
Johnsonburg Municipal Auth Elk County |
2,413 | 6 | 1 | |
|
Reynolds Water Company Mercer County |
2,370 | 4 | 1 | |
|
Mercersburg Muni Water Auth Franklin County |
2,350 | 7 | 1 | |
|
Newville Boro Water Auth Cumberland County |
2,070 | 4 | 0 | |
|
Muncy State Correctional Inst Lycoming County |
2,050 | 4 | 0 | |
|
McConnellsburg Boro Muni Auth Fulton County |
2,000 | 9 | 0 | |
|
Irvona Municipal Authority Clearfield County |
1,980 | 4 | 0 | |
|
Saxton Muni Water Auth Bedford County |
1,675 | 7 | 1 | |
|
Jay Twp Water Authority Elk County |
1,131 | 8 | 0 | |
|
Point Marion Boro Fayette County |
1,110 | 3 | 1 | |
|
Gifford Pinchot ST Park York County |
1,000 | 5 | 1 | |
|
Selinsgrove Center Snyder County |
1,000 | 7 | 1 | |
|
Millville Municipal Authority Columbia County |
969 | 12 | 1 | |
|
Hyndman Boro Water Dept Bedford County |
910 | 4 | 0 | |
|
Millheim Borough Water Company Centre County |
902 | 13 | 1 | |
|
McClure Municipal Authority Snyder County |
845 | 3 | 0 | |
|
Spring Twp Municipal Authority Snyder County |
805 | 3 | 0 | |
|
Freeburg Municipal Authority Snyder County |
685 | 5 | 1 | |
|
Gregg Township Water Authority Centre County |
670 | 10 | 1 | |
|
Crawford Township Authority Clinton County |
600 | 4 | 0 | |
|
Icmsa Rossiter Indiana County |
500 | 4 | 0 | |
|
Ulster Municipal Authority Bradford County |
500 | 3 | 1 | |
|
Rote Mutual Water Association Clinton County |
481 | 2 | 0 | |
|
Allensville Muni Auth Mifflin County |
480 | 3 | 0 | |
|
ST Petersburg Municipal Water Clarion County |
465 | 7 | 0 | |
|
Woodhaven Mobile Home Park Erie County |
350 | 12 | 4 | |
|
Nelson Township Authority Tioga County |
300 | 7 | 1 | |
|
Driftwood Borough Cameron County |
258 | 3 | 1 | |
|
Mary D Community Association Schuylkill County |
250 | 7 | 0 | |
|
Holiday Inn Express Franklin County |
200 | 3 | 1 | |
|
Greater Johnstown WA Saltlick Cambria County |
170 | 9 | 0 | |
|
Four Seasons Resort Washington County |
100 | 2 | 0 | |
|
Penns Cave Centre County |
75 | 5 | 0 | |
|
Safe Harbor Power Corp Lancaster County |
50 | 5 | 0 | |
|
Shawville Power LLC Clearfield County |
28 | 3 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Interim Enhanced Surface Water Treatment Rule, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Interim Enhanced Surface Water Treatment Rule 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.