Home/ Directory/ CT/ CTWC - NAUGATUCK REG-COLLINSVILLE SYS

Water system · PWSID CT0230011

CTWC - NAUGATUCK REG-COLLINSVILLE SYS

CLINTON, CT · ~6,324 people served

Check your exact address → CLINTON overview

Good

PurityRadar safety score

PWSID

CT0230011

State

Connecticut

City

CLINTON

Population served

6,324

Primary source

Surface water

Score history

▼ 26 points — the score moved from 100 to 74 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 74

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

PFOS

Perfluorooctanesulfonic acid

5.2 ppt

limit 4 ppt

Above EPA limit · 1.3×

PFOA

Perfluorooctanoic acid

4.4 ppt

limit 4 ppt

Above EPA limit · 1.1×

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2013. Official EPA record →

Monitoring & reporting · Total coliform began Jun 2012 Resolved

Monitoring & reporting · Total coliform began Sep 2008 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2968 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2969 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2979 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2980 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jan 2008 Resolved

Monitoring & reporting · EPA contaminant 2983 began Jan 2008 Resolved

Recent enforcement actions

State action · SIA Jan 2013
State action · SOX Jan 2013
State action · SOX Dec 2008
State action · SIA Nov 2008
State action · SOX May 2008
State action · SIA May 2008
State action · SOX Dec 2007
State action · SIA Nov 2007

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

2 stations · latest Oct 2021

0.33 · max 0.508 ppm · 2

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 CT0230011 — 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.