Tapcensus

Dichloromethane (Methylene Chloride) violations in Massachusetts

12 active public water systems in Massachusetts had a Dichloromethane (Methylene Chloride) violation in the past three years. What Dichloromethane (Methylene Chloride) is and why it matters.

Health effects: Chronic exposure to dichloromethane is associated with liver and kidney damage and neurological effects. EPA classifies it as a probable human carcinogen (Group B2); it is metabolized in the body to carbon monoxide and has been linked to cardiovascular stress. Workers in industrial settings and communities near manufacturing sites face the greatest risk.

Systems with a Dichloromethane (Methylene Chloride) violation

Unresolved first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Shrewsbury Water Department
Shrewsbury · Worcester County 		38,325 1 0
Brewster Water Department
Brewster · Barnstable County 		35,000 2 0
Wannacomet Water Company
Nantucket · Nantucket County 		27,703 7 2
Acton Water Supply District
Acton · Middlesex County 		21,285 2 0
Camp Ramsbottom
Rehoboth · Bristol County 		1,000 2 0
Kings Grant Water CO INC
North Attleborough · Bristol County 		434 5 2
Pleasant Water
Wellfleet · Barnstable County 		200 1 0
Andrews Farm Water Co.,inc.
Boxford · Essex County 		150 10 6
The Village Store Bldg.
Boxford · Essex County 		150 1 0
First Congregational Church
Plympton · Plymouth County 		55 5 1
Business Park West Condominium Trust
Tyngsborough · Middlesex County 		30 2 0
Herring Cove Condominiums Trust
Plymouth · Plymouth County 		25 3 2
About this data

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