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Water system · PWSID CT0970011

AQUARION-NEWTOWN REGIONAL

SHELTON, CT · ~6,054 people served

Check your exact address → SHELTON overview
65
Fair
PurityRadar safety score

PWSID

CT0970011

State

Connecticut

City

SHELTON

Population served

6,054

Primary source

Groundwater

Score history

▼ 35 points — the score moved from 100 to 65 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 65

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 Oct 2023). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

5.5 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFOS

Perfluorooctanesulfonic acid

5.5 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFHxS

Perfluorohexanesulfonic acid

4.9 ppt

limit 10 ppt

Below EPA limit

PFPeA

6.7 ppt

limit —

No federal limit

PFBS

6.1 ppt

limit —

No federal limit

PFBA

5.8 ppt

limit —

No federal limit

PFHxA

5.8 ppt

limit —

No federal limit

PFHpA

4.9 ppt

limit —

No federal limit

Violations & enforcement

25

Violations on record

1

Unaddressed

1

Health-based

15

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2019. Official EPA record →

Other · EPA contaminant 7000 began Jul 2006 Unaddressed
Other · EPA contaminant 7000 began Jul 2018 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2004 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2004 Resolved
Monitoring & reporting · EPA contaminant 2985 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2987 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2982 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2991 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2984 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2992 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2996 began Jan 2003 Resolved
Monitoring & reporting · EPA contaminant 2990 began Jan 2003 Resolved

Recent enforcement actions

  • State action · SIA Jan 2019
  • State action · SOX Jul 2018
  • State action · SIF Jan 2007
  • State action · SIA Oct 2006
  • State action · SOX Aug 2006
  • State action · SOX Dec 2005
  • State action · SIE May 2005
  • State action · SIA May 2005

This profile is built from EPA public records for system CT0970011 — 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.