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Water system · PWSID CT1350011

AQUARION-STAMFORD

SHELTON, CT · ~119,214 people served

Check your exact address → SHELTON overview
90
Excellent
PurityRadar safety score

PWSID

CT1350011

State

Connecticut

City

SHELTON

Population served

119,214

Primary source

Surface water

Score history

▼ 10 points — the score moved from 100 to 90 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 90

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

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Dec 2025). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

4.3 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFPeA

3.1 ppt

limit —

No federal limit

PFHxA

3 ppt

limit —

No federal limit

Violations & enforcement

34

Violations on record

0

Unaddressed

0

Health-based

20

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2022. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2021 Resolved
Other · EPA contaminant 7000 began Jul 2018 Resolved
Monitoring & reporting · EPA contaminant 2010 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2020 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2043 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2044 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2047 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2046 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2050 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2051 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2065 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 2016 Resolved

Recent enforcement actions

  • State action · SOX Jan 2022
  • State action · SIF Feb 2020
  • State action · SIF Feb 2020
  • State action · SOX Jul 2019
  • State action · SOX Jul 2019
  • State action · SIA Jun 2019
  • State action · SIE Jun 2019
  • State action · SIA Jun 2019

This profile is built from EPA public records for system CT1350011 — 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.