TOWN OF AVON

AVON, MA · ~4,777 people served

Check your exact address → AVON overview

Fair

PurityRadar safety score

PWSID

MA4018000

State

Massachusetts

City

AVON

Population served

4,777

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

PFOS

Perfluorooctanesulfonic acid

6 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFOA

Perfluorooctanoic acid

5.1 ppt

limit 4 ppt

Above EPA limit · 1.3×

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Treatment technique · EPA contaminant 0700 health-based began Jun 2016 Resolved

Other · EPA contaminant 7000 began Jul 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Nov 2010 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2007 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2007 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 1996 Resolved

Recent enforcement actions

State action · SFL Jan 2025
State action · SFL Oct 2020
State action · SFO Sep 2018
State action · SOX Aug 2016
State action · SFJ Aug 2016
State action · SFJ Aug 2015
State action · SOX Jul 2015
State action · SIE Nov 2014

This profile is built from EPA public records for system MA4018000 — 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.