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Water system · PWSID MA2019000

AYER DPW WATER DIVISION

AYER, MA · ~8,479 people served

Check your exact address → AYER overview
100
Excellent
PurityRadar safety score

PWSID

MA2019000

State

Massachusetts

City

AYER

Population served

8,479

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

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

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 Feb 2024). Levels in parts per trillion (ppt).

PFPeA

13 ppt

limit —

No federal limit

PFBA

10 ppt

limit —

No federal limit

PFHxA

5.2 ppt

limit —

No federal limit

Violations & enforcement

16

Violations on record

0

Unaddressed

2

Health-based

38

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Jul 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2021 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2021 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Apr 2013 Resolved
Monitoring & reporting · Arsenic began Jan 2010 Resolved
Monitoring & reporting · Arsenic began Apr 2009 Resolved
Monitoring & reporting · Arsenic began Oct 2007 Resolved
Other · EPA contaminant 7000 began Jul 2006 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2005 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved

Recent enforcement actions

  • State action · SFL Feb 2024
  • State action · SOX Feb 2024
  • State action · SOX Nov 2022
  • State action · SIE Aug 2022
  • State action · SIE Aug 2022
  • State action · SFL Dec 2021
  • State action · SFL Sep 2019
  • State action · SOX Sep 2019

This profile is built from EPA public records for system MA2019000 — 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.