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Water system · PWSID CT0286011

COLCHESTER COMMONS

COLCHESTER, CT · ~224 people served

Check your exact address → COLCHESTER overview
85
Excellent
PurityRadar safety score

PWSID

CT0286011

State

Connecticut

City

COLCHESTER

Population served

224

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

127

Violations on record

2

Unaddressed

10

Health-based

108

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2025. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Dec 2024 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Oct 2022 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jul 2020 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2019 Resolved
Reporting · Lead & Copper Rule began Mar 2019 Resolved
Other · EPA contaminant 7000 began Jul 2017 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2012 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved

Recent enforcement actions

  • State action · SIF Aug 2025
  • State action · SOX Dec 2024
  • State action · SOX Dec 2024
  • State action · SIA Nov 2024
  • State action · SIE Nov 2024
  • State action · SOX Nov 2022
  • State action · SIA Nov 2022
  • State action · SIF Oct 2022

This profile is built from EPA public records for system CT0286011 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.