Tapcensus

2,4,5-TP (Silvex) violations in Pennsylvania

248 active public water systems in Pennsylvania had a 2,4,5-TP (Silvex) violation in the past three years, 7 of them in the latest quarter of EPA's data. What 2,4,5-TP (Silvex) is and why it matters.

Health effects: Chronic exposure to Silvex is associated with liver damage. EPA classifies it as a possible human carcinogen (Group C). The dioxin contamination historically associated with its production added to concern about its carcinogenicity, though the MCL applies to Silvex itself. Long-term exposure above the MCL is the primary concern.

Systems with a 2,4,5-TP (Silvex) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Blue Ridge School Complex
Susquehanna County
1,450 2 0
Lilly Borough Water Authority
Cambria County
1,388 5 0
Bainbridge Water Authority
Lancaster County
1,200 1 0
McDonalds Brodheadsville
Monroe County
1,200 3 1
Western Wayne High School
Wayne County
1,184 1 0
Bloomfield Boro Water Auth
Perry County
1,170 2 0
Penns Valley Area High School
Centre County
1,170 2 0
North Pocono Middle School
Lackawanna County
1,149 3 2
Wawa Store #159
Monroe County
1,001 1 0
Cambria Twp Water Auth
Cambria County
1,000 5 1
Pmsd Sullivan Trail Jun High
Monroe County
1,000 1 0
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
Mountain View Elem School
Susquehanna County
900 1 0
Lehman Jackson Elementary
Luzerne County
875 6 1
Elk Lake Elementary School
Susquehanna County
850 3 1
Rice Elementary School
Luzerne County
838 3 1
Mountainview High School
Susquehanna County
822 2 0
Elk Lake High School
Susquehanna County
800 1 0
Pmsd Tobyhanna Elemetary Cntr
Monroe County
800 2 1
Village Square Plaza
Perry County
800 2 0
Nicholson Boro Auth
Wyoming County
789 6 1
Paradise Stream Resor
Monroe County
774 9 3
Moscow Elementary Center
Lackawanna County
753 1 0
Lake Lehman High School
Luzerne County
750 6 1
Richland Meadows MHP
Bucks County
750 2 1
Highland S & W Auth Lloydell
Cambria County
723 3 0
Hereford Est MHP
Berks County
710 2 0
Oak Ridge Authority
Centre County
700 5 1
Lawrenceville Boro Water Dept
Tioga County
691 9 1
Eei Meadows Complex
Luzerne County
628 2 0
Port Matilda Waterworks
Centre County
615 3 0
North Pocono Intermediate Schl
Lackawanna County
600 1 0
Clintonville Boro Wtp
Venango County
557 5 0
Bills Plaza
Lackawanna County
501 6 2
Cross Creek Resort
Venango County
500 3 0
Lake Adventure Community Assn
Pike County
499 3 1
Lake Wallenpaupack Sandy Shore
Wayne County
499 3 1
ST Petersburg Municipal Water
Clarion County
465 7 0
Lake Noxen Elementary School
Luzerne County
450 4 1
Regency Woods MHP
Cumberland County
450 2 1
Longwood Gardens
Chester County
440 5 0
Miles Twp Water Auth East
Centre County
425 4 1
Kennerdell North Water System
Venango County
412 4 0
Heatherbrooke Estates
Lycoming County
410 4 0
Waterford Waterworks
Westmoreland County
389 8 0
Cooperstown Water Company
Venango County
360 8 0
About this data

A system is counted once if any of its violations in the past three years involved 2,4,5-TP (Silvex), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not 2,4,5-TP (Silvex) 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.