Tapcensus

Simazine violations in Massachusetts

12 active public water systems in Massachusetts had a Simazine violation in the past three years, 1 of them in the latest quarter of EPA's data. What Simazine is and why it matters.

Health effects: Chronic exposure to simazine is associated with potential cancer risk; EPA classifies it as a possible human carcinogen (Group C) based on animal studies. Blood and nervous system effects have also been observed in animal studies. Long-term exposure at levels above the MCL is the primary concern for public water system violations.

Systems with a Simazine violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Townhouses @ Copper Lantern
Carver · Plymouth County
176 2 1
Inima USA / Aquaria LLC
Dighton · Bristol County
105,643 1 0
Centerville Osterville Marstons Mills WD
Barnstable · Barnstable County
50,000 2 0
Wannacomet Water Company
Nantucket · Nantucket County
27,703 7 2
Orleans Water Department
Orleans · Barnstable County
17,460 1 0
Sharon Water Dept
Sharon · Norfolk County
16,846 1 0
Halifax Water Department
Halifax · Plymouth County
7,575 4 0
Siasconset Water Department
Nantucket · Nantucket County
3,000 3 1
Andrews Farm Water Co.,inc.
Boxford · Essex County
150 10 6
Chilmark School
Chilmark · Dukes County
90 2 1
First Congregational Church
Plympton · Plymouth County
55 5 1
Ashby Legion/grange/church
Ashby · Middlesex County
25 2 0
About this data

A system is counted once if any of its violations in the past three years involved Simazine, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Simazine 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 Massachusetts 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. Retrieved from ECHO on Oct 11, 2026.