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
Eisenhower Elemen Middle HS
Warren County
835 3 0
Mountainview High School
Susquehanna County
822 2 0
Paradise Stream Resor
Monroe County
774 9 3
Penns Creek Municipal Auth
Snyder County
725 10 0
Oak Ridge Authority
Centre County
700 5 1
Clintonville Boro Wtp
Venango County
557 5 0
Purchase Line South Elem Sch
Indiana County
499 1 0
Brookside Village MHP
Columbia County
475 9 0
ST Petersburg Municipal Water
Clarion County
465 7 0
Flying J Travel Plaza
Susquehanna County
450 3 0
Genesee Twp Water Authority
Potter County
450 11 1
Lake Noxen Elementary School
Luzerne County
450 4 1
Lycoming Valley JR High School
Lycoming County
450 2 1
Purchase Line High Sch
Indiana County
450 2 0
Regency Woods MHP
Cumberland County
450 2 1
Kennerdell North Water System
Venango County
412 4 0
Heatherbrooke Estates
Lycoming County
410 4 0
Dudley Carbon Coalmont JM Auth
Huntingdon County
403 8 1
Hamlin Water Company
Wayne County
400 6 0
Village Ctr at Lords Valley
Pike County
400 4 1
Millfair Heights Water System
Erie County
390 4 0
Cooperstown Water Company
Venango County
360 8 0
Damascus Area School
Wayne County
350 1 0
Laurel Run Estates
Luzerne County
340 4 1
Coaldale Six Mile Run Water
Bedford County
320 9 1
Woodland Hills
Wayne County
320 6 0
Village at Camelback
Monroe County
309 4 1
Ctma Sagamore
Armstrong County
300 5 0
Knox Township Munic Authority
Jefferson County
300 8 0
Montgomery School
Chester County
300 4 1
Paradise Point
Wayne County
300 5 0
Victaulic Lawrenceville
Tioga County
300 3 0
Addison Area Water Auth
Somerset County
284 7 0
Country Pines MHP
Luzerne County
280 8 3
Dry Run Water Assn
Franklin County
278 4 1
Western Cumberland Water Sys
Adams County
275 1 0
Halifax Village
Dauphin County
272 9 0
Pine Grove Estates
Wayne County
263 7 0
Allegheny East Conf
Berks County
260 5 0
Awc Valley Forge Crossing MHP
Montgomery County
250 4 0
Cogan Valley Mobile Home Park
Lycoming County
250 10 1
Hawk Valley Village
Lancaster County
250 3 0
Leprino Foods
Bradford County
250 5 0
Malvern Courts MHP
Chester County
250 3 0
Meadows Mobile Home Park
Westmoreland County
250 6 3
Ranch House Restaurant
Perry County
250 2 1
Loysville Youth Dev Ctr
Perry County
249 6 0
Sunshine Hills Water CO
Perry County
248 3 0
Plumstead Christian Upper Schl
Bucks County
230 1 0
Shirleysburg Muni Auth
Huntingdon County
225 2 1
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.