Tapcensus

2,3,7,8-TCDD (Dioxin) violations in Pennsylvania

233 active public water systems in Pennsylvania had a 2,3,7,8-TCDD (Dioxin) violation in the past three years, 13 of them in the latest quarter of EPA's data. What 2,3,7,8-TCDD (Dioxin) is and why it matters.

Health effects: TCDD is classified as a known human carcinogen (Group A) by EPA. Even at extremely low concentrations it is associated with increased cancer risk, particularly soft tissue sarcoma and lymphoma. It also causes chloracne, liver damage, immune suppression, and reproductive and developmental toxicity. The MCL is set at a vanishingly low level reflecting its extreme potency.

Systems with a 2,3,7,8-TCDD (Dioxin) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Hughesville Borough Water Auth
Lycoming County
2,800 7 0
ST Joseph Institute
Centre County
109 4 1
Hitching Post Assoc
Pike County
90 11 3
Little Acres Learning Campus
Lackawanna County
86 5 2
Salem Heights Estate
Wayne County
62 13 4
Beaver Run Water Association
Carbon County
50 8 1
Country Glen Townhomes
Monroe County
50 10 3
The Valley MHC
Warren County
37 6 0
Congregation Ohr Menachem
Monroe County
30 9 2
Dauphin CO Conservation Dist
Dauphin County
30 5 0
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
Capital Region Water
Dauphin County
66,540 1 0
Lower Bucks CO Joint Mun Auth
Bucks County
63,007 1 0
Aqua PA West Chester
Chester County
48,600 1 0
Hca Hazleton Division
Luzerne County
45,000 3 1
PA Amer Water CO Ellwood Cty
Lawrence County
17,200 1 0
Morrisville Munic Authority
Bucks County
13,342 3 2
Aqua PA Hatboro
Montgomery County
12,901 1 0
Summit Township Water Authorit
Erie County
12,500 2 0
PA American Audubon
Montgomery County
8,200 8 0
Mun Auth of Boro of Bedford
Bedford County
5,127 4 0
Bear Creek Mountain Resort
Berks County
4,500 1 0
Tobyhanna Army Depot
Monroe County
3,800 4 0
Conyngham Sugarloaf Joint MA
Luzerne County
3,230 3 0
Redbank Valley Mun Auth
Clarion County
3,150 4 1
Tower City Borough Authority
Schuylkill County
3,150 3 0
Gallitzin Boro Water Auth
Cambria County
3,130 8 0
Bangor Area School Complex
Northampton County
2,700 3 0
Greenfield Twp Muni Auth
Blair County
2,500 2 0
Wallenpaupack Lake Estates
Wayne County
2,200 4 2
Fairfield Muni Auth
Adams County
2,150 2 0
Bally Muni Water Works
Berks County
2,146 1 0
General McLane Schools
Erie County
2,000 2 0
McConnellsburg Boro Muni Auth
Fulton County
2,000 9 0
Quakertown Farmers Market
Bucks County
2,000 2 0
Harrisburg Intl Airport
Dauphin County
1,500 4 0
Worthington West Franklin Jma
Armstrong County
1,500 5 0
Lilly Borough Water Authority
Cambria County
1,388 5 0
Troy Water Deptartment
Bradford County
1,362 2 1
Shinglehouse Boro Water Dept
Potter County
1,250 6 0
McDonalds Brodheadsville
Monroe County
1,200 3 1
The Escape
Pike County
1,100 6 0
Polk Center
Venango County
1,058 13 0
Selinsgrove Center
Snyder County
1,000 7 1
Kreamer Mun Auth
Snyder County
980 2 0
Millville Municipal Authority
Columbia County
969 12 1
Mountain View Elem School
Susquehanna County
900 1 0
About this data

A system is counted once if any of its violations in the past three years involved 2,3,7,8-TCDD (Dioxin), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not 2,3,7,8-TCDD (Dioxin) 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.