Home/ Directory/ CT/ AVON WATER CO

Water system · PWSID CT0040011

AVON WATER CO

CLINTON, CT · ~11,590 people served

Check your exact address → CLINTON overview
40
Action needed
PurityRadar safety score

PWSID

CT0040011

State

Connecticut

City

CLINTON

Population served

11,590

Primary source

Groundwater

Score history

▼ 60 points — the score moved from 100 to 40 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 40

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

PFOS

Perfluorooctanesulfonic acid

8 ppt

limit 4 ppt

Above EPA limit · 2.0×

PFOA

Perfluorooctanoic acid

7 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFHxA

4 ppt

limit —

No federal limit

PFBS

3 ppt

limit —

No federal limit

Violations & enforcement

181

Violations on record

1

Unaddressed

1

Health-based

50

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2018. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2016 Unaddressed
Monitoring & reporting · EPA contaminant 2032 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2034 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2036 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2020 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2031 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2037 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2010 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2005 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2035 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 2018 Resolved
Monitoring & reporting · EPA contaminant 2039 began Jan 2018 Resolved

Recent enforcement actions

  • State action · SIF Jun 2018
  • State action · SIA Jun 2018
  • State action · SIA Jun 2018
  • State action · SIF Jun 2018
  • State action · SOX May 2018
  • State action · SOX May 2018
  • State action · SIA Oct 2017
  • State action · SIE Oct 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

1 station · latest Oct 2022

0.394 · max 0.493 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 CT0040011 — 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.