392 active public water systems serve 209,369 people in New London County. 188 are compliant, 204 had at least one EPA violation in the past three years, 6 are designated serious violators, and 79 carry a health flag.
Active systems39288 community systems
People served209Kby public water systems
Systems with violations20452% of active systems, past 3 years
Serious violators679 systems carry a health flag
Needs attention
St. Bernard SchoolCT0860282 · Montville · Non-Transient non-community system · Serves 9503 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Colchester EstatesCT0280041 · Colchester · Community water system · Serves 2766 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions and Consumer Confidence Rule.
Round Hill LLC Well# 1&2CT0731021 · Lisbon · Community water system · Serves 729 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions, Public Notice Rule and Revised PN Rule, and Consumer Confidence Rule.
Mile Creek ApartmentsCT1050131 · Old Lyme · Community water system · Serves 603 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Freedom Village Elderly HousingCT0866301 · Montville · Community water system · Serves 433 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
Salem Town Center LLCCT1219093 · Salem · Non-Transient non-community system · Serves 304 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Lead and Copper Rule Revisions.
Leonard J.tyl Middle School&high SchoolCT0869073 · Montville · Non-Transient non-community system · Serves 1,4661 rule violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Strawberry ParkCT1140471 · Preston · Non-Transient non-community system · Serves 1,0473 rules violated in the past three years. Unresolved: Ground Water Rule, Lead and Copper Rule Revisions, and Public Notice Rule and Revised PN Rule.
Scwa, Oakdale Heights DivisionCT0860031 · Montville · Community water system · Serves 8762 rules violated in the past three years. Unresolved: Lead and Copper Rule.
Indian Field Coop Campground Assn., Inc.CT1219113 · Salem · Non-Transient non-community system · Serves 6852 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.
69 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.