2,4-D violations in Pennsylvania
206 active public water systems in Pennsylvania had a 2,4-D violation in the past three years, 8 of them in the latest quarter of EPA's data. What 2,4-D is and why it matters.
Systems with a 2,4-D violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Little Acres Learning Campus Lackawanna County |
86 | 5 | 2 | |
|
Beaver Run Water Association Carbon County |
50 | 8 | 1 | |
|
Country Glen Townhomes Monroe County |
50 | 10 | 3 | |
|
Seeds to Saplings Pike County |
50 | 7 | 0 | |
|
Congregation Ohr Menachem Monroe County |
30 | 9 | 2 | |
|
Oak Grove Apartments Monroe County |
30 | 4 | 0 | |
|
Overpeck MHP Wyoming County |
25 | 9 | 4 | |
|
Tower Springs LLC Schuylkill County |
25 | 9 | 1 | |
|
Pittsburgh Water & Sewer Auth Allegheny County |
520,000 | 3 | 0 | |
|
Greater Johnstown WA Riverside Cambria County |
49,500 | 7 | 0 | |
|
Aqua PA West Chester Chester County |
48,600 | 1 | 0 | |
|
Horsham Water&sewer Authority Montgomery County |
26,000 | 5 | 0 | |
|
Highland S & W Auth Beaverdam Cambria County |
22,617 | 8 | 0 | |
|
Morrisville Munic Authority Bucks County |
13,342 | 3 | 2 | |
|
Aqua PA Hatboro Montgomery County |
12,901 | 1 | 0 | |
|
Icmsa Crooked Creek Indiana County |
9,638 | 5 | 0 | |
|
Dtma Main System Bucks County |
8,655 | 2 | 0 | |
|
Hemlock Farms (main) Pike County |
8,321 | 8 | 0 | |
|
PA American Audubon Montgomery County |
8,200 | 8 | 0 | |
|
Wernersville Muni Water Auth Berks County |
7,920 | 3 | 1 | |
|
Conemaugh Twp Muni Auth Somerset County |
7,800 | 11 | 0 | |
|
Minersville Municipal Water AU Schuylkill County |
7,275 | 5 | 0 | |
|
Portage Boro Muni Auth Cambria County |
6,500 | 9 | 0 | |
|
Danville Municipal Water Auth Montour County |
4,992 | 6 | 0 | |
|
Upper Hanover Water Authority Montgomery County |
4,600 | 4 | 1 | |
|
Bear Creek Mountain Resort Berks County |
4,500 | 1 | 0 | |
|
Northern Cambria Muni Water Cambria County |
4,500 | 5 | 0 | |
|
Union City Municipal Authority Erie County |
4,295 | 6 | 0 | |
|
Mountain Water Assn Fayette County |
3,856 | 6 | 1 | |
|
Cooper Twp Municipal Auth Clearfield County |
3,700 | 3 | 0 | |
|
Tower City Borough Authority Schuylkill County |
3,150 | 3 | 0 | |
|
Muni Auth of Boro of Matamoras Pike County |
2,900 | 9 | 2 | |
|
Bangor Area School Complex Northampton County |
2,700 | 3 | 0 | |
|
Western Clinton CO Mun Auth Clinton County |
2,610 | 9 | 1 | |
|
Greenfield Twp Muni Auth Blair County |
2,500 | 2 | 0 | |
|
Bally Muni Water Works Berks County |
2,146 | 1 | 0 | |
|
Duncannon Muni Water Perry County |
2,000 | 2 | 0 | |
|
McConnellsburg Boro Muni Auth Fulton County |
2,000 | 9 | 0 | |
|
Mont Alto Municipal Authority Franklin County |
1,705 | 3 | 0 | |
|
Blossburg Municipal Authority Tioga County |
1,650 | 3 | 0 | |
|
Brady Twp Water Association Clearfield County |
1,570 | 4 | 0 | |
|
Lilly Borough Water Authority Cambria County |
1,388 | 5 | 0 | |
|
Penns Valley Area High School Centre County |
1,170 | 2 | 0 | |
|
Cambria Twp Water Auth Cambria County |
1,000 | 5 | 1 | |
|
Selinsgrove Center Snyder County |
1,000 | 7 | 1 | |
|
Millville Municipal Authority Columbia County |
969 | 12 | 1 | |
|
Tulpehocken Area Mid High SC Berks County |
930 | 3 | 0 | |
|
Sterling Sewer and Water CO Wayne County |
903 | 5 | 1 | |
|
Millheim Borough Water Company Centre County |
902 | 13 | 1 | |
|
Paradise Stream Resor Monroe County |
774 | 9 | 3 |
About this data
A system is counted once if any of its violations in the past three years involved 2,4-D, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not 2,4-D 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.