Tapcensus

Groundwater Rule (GWR) violations in Massachusetts

19 active public water systems in Massachusetts had a Groundwater Rule (GWR) violation in the past three years, 17 of them still unresolved. What Groundwater Rule (GWR) is and why it matters.

Health effects: Protects against enteric viruses, which can contaminate groundwater via cracked well casings, failing septic systems, or animal waste. Viruses persist longer in groundwater than in surface water. Hepatitis A and norovirus are the primary pathogens of concern.

Systems with a Groundwater Rule (GWR) violation

Unresolved first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Scituate Water Division
Scituate · Plymouth County
19,297 6 2
Shirley Water District
Shirley · Middlesex County
4,165 4 2
Bard College at Simons Rock
Great Barrington · Berkshire County
500 1 1
Stow Acres Country Club
Stow · Middlesex County
310 1 1
The Ranch Golf Club
Southwick · Hampden County
200 1 1
Four Mile Village
Boxford · Essex County
133 4 2
Sports Haven Mobile Home Park
Belchertown · Hampshire County
107 3 3
Brookside Village
Wales · Hampden County
80 1 0
Jacobs Ladder Tavern
Becket · Berkshire County
80 1 1
Planet Gymnastics/all Seasons Tennis
Acton · Middlesex County
75 1 1
The Rapids Bar and Grill
Huntington · Hampshire County
75 1 1
Thornewood Inn
Great Barrington · Berkshire County
38 1 1
Villa Sofia
Brimfield · Hampden County
30 1 1
Briarcliff Motel
Great Barrington · Berkshire County
25 1 1
Gedney Farm
New Marlborough · Berkshire County
25 1 1
Liberty Plaza
Hancock · Berkshire County
25 1 1
Woolman Hill
Deerfield · Franklin County
25 1 1
Grafton Water District
Grafton · Worcester County
10,925 2 0
Barre Water Department
Barre · Worcester County
2,610 5 0
About this data

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