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Water system · PWSID CT1410051

MARIANAPOLIS PREP SCHOOL - ST JOHNS

THOMPSON, CT · ~128 people served

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

PWSID

CT1410051

State

Connecticut

City

THOMPSON

Population served

128

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

118

Violations on record

2

Unaddressed

11

Health-based

174

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2020. Official EPA record →

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Other · EPA contaminant 7000 began Aug 2019 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Monitoring · Lead & Copper Rule began Oct 2018 Resolved
Other · EPA contaminant 7000 began Aug 2018 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved
Other · EPA contaminant 7000 began Aug 2012 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Other · EPA contaminant 7000 began Jul 2010 Resolved
Other · EPA contaminant 7000 began Aug 2008 Resolved

Recent enforcement actions

  • State action · SOX Jan 2020
  • State action · SIA Jan 2020
  • State action · SOX Mar 2019
  • State action · SIF Mar 2019
  • State action · SIE Feb 2019
  • State action · SIA Feb 2019
  • State action · SIA Jan 2019
  • State action · SOX Jun 2018

This profile is built from EPA public records for system CT1410051 — 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.