255 active public water systems serve 63,893 people in Windham County. 116 are compliant, 139 had at least one EPA violation in the past three years, 4 are designated serious violators, and 67 carry a health flag.
Active systems25553 community systems
People served64Kby public water systems
Systems with violations13955% of active systems, past 3 years
Serious violators467 systems carry a health flag
Needs attention
Hampton Elementary SchoolCT0631223 · Hampton · Non-Transient non-community system · Serves 2203 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR), Lead and Copper Rule Revisions (LCRR), and Revised Total Coliform Rule (RTCR).
Pinecrest CondominiumsCT1698041 · Woodstock · Community water system · Serves 1103 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Country ManorCT1120041 · Pomfret · Community water system · Serves 663 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR), Public Notification Rule, and TTHM (Total Trihalomethanes).
Seely Brown VillageCT1121131 · Pomfret · Community water system · Serves 483 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Killingly High School & Agricultural CtrCT0691243 · Killingly · Non-Transient non-community system · Serves 1,4002 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Woodstock AcademyCT1691112 · Woodstock · Non-Transient non-community system · Serves 1,1253 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR) and Public Notification Rule.
Woodstock Elementary SchoolCT1690262 · Woodstock · Non-Transient non-community system · Serves 6361 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Woodstock Academy South CampusCT1691171 · Woodstock · Community water system · Serves 6201 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Woodstock Middle SchoolCT1699023 · Woodstock · Non-Transient non-community system · Serves 5111 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
Parish Hill High SchoolCT0241243 · Chaplin · Non-Transient non-community system · Serves 4871 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions (LCRR).
57 more systems with a serious violator or health flag designation are in the lists below.
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 Connecticut 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.