Tapcensus

Polychlorinated Biphenyls (PCBs) violations in Wisconsin

2 active public water systems in Wisconsin had a Polychlorinated Biphenyls (PCBs) violation in the past three years. What Polychlorinated Biphenyls (PCBs) is and why it matters.

Health effects: PCBs are classified by EPA as probable human carcinogens (Group B2). Long-term exposure is associated with liver damage, immune suppression, thyroid disruption, and reproductive and developmental effects. They bioaccumulate in fatty tissue. Developing fetuses and infants are most vulnerable to neurological and endocrine effects.

Systems with a Polychlorinated Biphenyls (PCBs) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Hillside
County 		63 3 0
Sand Hill
County 		38 2 0
About this data

A system is counted once if any of its violations in the past three years involved Polychlorinated Biphenyls (PCBs), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Polychlorinated Biphenyls (PCBs) 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 Wisconsin 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.