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Water system · PWSID CT0570011

AQUARION-GREENWICH

SHELTON, CT · ~53,297 people served

Check your exact address → SHELTON overview
84
Good
PurityRadar safety score

PWSID

CT0570011

State

Connecticut

City

SHELTON

Population served

53,297

Primary source

Surface water

Score history

▼ 16 points — the score moved from 100 to 84 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 84

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 Aug 2025). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

4 ppt

limit 4 ppt

Near EPA limit

PFOS

Perfluorooctanesulfonic acid

4 ppt

limit 4 ppt

Near EPA limit

PFPeA

3.8 ppt

limit —

No federal limit

PFHxA

3.1 ppt

limit —

No federal limit

Violations & enforcement

29

Violations on record

0

Unaddressed

1

Health-based

36

Enforcement actions

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

Monitoring & reporting · EPA contaminant 1009 began Jun 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2019 Resolved
Monitoring & reporting · Bromate began Nov 2018 Resolved
Monitoring & reporting · Bromate began Nov 2018 Resolved
Other · EPA contaminant 7000 began Jul 2018 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2378 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2980 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2968 began Jan 2018 Resolved

Recent enforcement actions

  • State action · SIF Jul 2025
  • State action · SIE Oct 2024
  • State action · SIA Oct 2024
  • State action · SOX Jul 2024
  • State action · SOX Mar 2020
  • State action · SIF Feb 2020
  • State action · SOX Jan 2020
  • State action · SIA Jun 2019

This profile is built from EPA public records for system CT0570011 — 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.