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Water system · PWSID CT0473011

CTWC - NORTHERN REG-WESTERN SYSTEM

CLINTON, CT · ~101,313 people served

Check your exact address → CLINTON overview

Fair

PurityRadar safety score

PWSID

CT0473011

State

Connecticut

City

CLINTON

Population served

101,313

Primary source

Surface water

Score history

▼ 53 points — the score moved from 100 to 47 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 47

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

PFOA

Perfluorooctanoic acid

8 ppt

limit 4 ppt

Above EPA limit · 2.0×

PFOS

Perfluorooctanesulfonic acid

6 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFHxS

Perfluorohexanesulfonic acid

3 ppt

limit 10 ppt

Below EPA limit

Lithium

19,800 ppt

limit —

No federal limit

PFBA

5 ppt

limit —

No federal limit

PFBS

3 ppt

limit —

No federal limit

PFHxA

3 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

202

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2024. Official EPA record →

Other · EPA contaminant 7500 began Jun 2018 Unaddressed

Other · EPA contaminant 7500 began Dec 2024 Resolved

Monitoring & reporting · EPA contaminant 3014 began Jul 2014 Resolved

Monitoring & reporting · Total coliform began Jul 2014 Resolved

Monitoring & reporting · EPA contaminant 2378 began Jan 2014 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jan 2014 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 2014 Resolved

Monitoring & reporting · Gross alpha began Jan 2014 Resolved

Monitoring & reporting · EPA contaminant 2968 began Jan 2014 Resolved

Monitoring & reporting · Combined radium-226/228 began Jan 2014 Resolved

Monitoring & reporting · Uranium began Jan 2014 Resolved

Monitoring & reporting · EPA contaminant 2969 began Jan 2014 Resolved

Recent enforcement actions

State action · SIF Dec 2024
State action · SOX Dec 2024
State action · SIE Dec 2024
State action · SIA Aug 2019
State action · SIA Jun 2017
State action · SIE Jun 2017
State action · SOX Apr 2017
State action · SOX Mar 2017

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

8 stations · latest Sep 2023

2.84 · max 5.26 mg/l as N · 186

Copper

3 stations · latest Oct 2023

1.3 · max 40.9 ug/l · 70

Manganese

3 stations · latest Oct 2023

63.7 · max 223 ug/l · 69

Lead

3 stations · latest Oct 2023

0.222 · max 13.5 ug/l · 60

Fluoride

2 stations · latest Oct 2023

0.04 · max 0.05 mg/l · 59

Uranium

2 stations · latest Oct 2023

0.169 · max 0.636 ug/l · 59

Arsenic

1 station · latest May 2021

0.6 · max 3 ug/l · 11

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CT0473011 — 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.