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Water system · PWSID MA3330019

HAYSTACK ESTATES

TYNGSBOROUGH, MA · ~60 people served

Check your exact address → TYNGSBOROUGH overview
82
Good
PurityRadar safety score

PWSID

MA3330019

State

Massachusetts

City

TYNGSBOROUGH

Population served

60

Primary source

Groundwater

Score history

▼ 18 points — the score moved from 100 to 82 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 82

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

PFOA

Perfluorooctanoic acid

5.6 ppt

limit 4 ppt

Above EPA limit · 1.4×

Lithium

74,000 ppt

limit —

No federal limit

PFPeA

3.8 ppt

limit —

No federal limit

PFBS

3.3 ppt

limit —

No federal limit

PFHxA

3.3 ppt

limit —

No federal limit

Violations & enforcement

13

Violations on record

0

Unaddressed

1

Health-based

27

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2021. Official EPA record →

Other · EPA contaminant 7000 began Jul 2021 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Monitoring & reporting · Gross alpha began Jan 2014 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Max contaminant level (MCL) · Combined radium-226/228 health-based began Oct 2010 Resolved
Monitoring & reporting · Combined radium-226/228 began Jul 2009 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2005 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved
Other · EPA contaminant 7000 began Jul 2002 Resolved
Monitoring & reporting · Combined radium-226/228 began Oct 2000 Resolved
Monitoring & reporting · Nitrate began Jul 1994 Resolved
Monitoring & reporting · Nitrite began Jul 1994 Resolved

Recent enforcement actions

  • State action · SFL Aug 2021
  • State action · SOX Aug 2021
  • State action · SFJ Aug 2016
  • State action · SOX Aug 2016
  • State action · SOX May 2014
  • State action · SFJ May 2014
  • State action · SOX Sep 2013
  • State action · SFJ Aug 2013

This profile is built from EPA public records for system MA3330019 — 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.