184 active public water systems serve 133,549 people in Berkshire County. 143 are compliant, 41 had at least one EPA violation in the past three years, 0 are designated serious violators, and 7 carry a health flag.
Active systems18441 community systems
People served134Kby public water systems
Systems with violations4122% of active systems, past 3 years
Serious violators07 systems carry a health flag
Needs attention
Camp OverflowMA1225009 · Otis · Transient non-community system · Serves 1602 rules violated in the past three years. Unresolved: Ground Water Rule and Stage 1 Disinfectants and Disinfection Byproducts Rule.
Thornewood InnMA1113027 · Great Barrington · Transient non-community system · Serves 381 rule violated in the past three years. Unresolved: Ground Water Rule.
1896 House RestaurantMA1341024 · Williamstown · Transient non-community system · Serves 343 rules violated in the past three years. Unresolved: Revised Total Coliform Rule, Surface Water Treatment Rule, and Public Notice Rule and Revised PN Rule.
Briarcliff MotelMA1113015 · Great Barrington · Transient non-community system · Serves 251 rule violated in the past three years. Unresolved: Ground Water Rule.
Gedney FarmMA1203014 · New Marlborough · Transient non-community system · Serves 251 rule violated in the past three years. Unresolved: Ground Water Rule.
Liberty PlazaMA1121013 · Hancock · Transient non-community system · Serves 251 rule violated in the past three years. Unresolved: Ground Water Rule.
Maplewood 1850 HouseMA1225046 · Otis · Transient non-community system · Serves 251 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.
Compliant
Compliant
No violations reported to EPA in the past three years.
At least one violation on record with EPA in the past three years. Many are monitoring or reporting lapses rather than contamination; the system page lists which rules were involved and whether each is still open.
EPA's designation, also called an enforcement priority, for a system with unresolved serious, multiple, or continuing violations. EPA expects the system and its state to act quickly to resolve them.
At least one open health-based violation: an exceedance of a maximum contaminant level or residual disinfectant level, or a treatment technique violation. Monitoring and reporting lapses do not raise this flag.