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Water system · PWSID MA2174000

MAYNARD DPW, WATER DIVISION

78
Good
PurityRadar safety score

PWSID

MA2174000

State

Massachusetts

City

MAYNARD

Population served

10,401

Primary source

Groundwater

Score history

▼ 22 points — the score moved from 100 to 78 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 78

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

PFOA

Perfluorooctanoic acid

4.8 ppt

limit 4 ppt

Above EPA limit · 1.2×

PFOS

Perfluorooctanesulfonic acid

4.2 ppt

limit 4 ppt

Above EPA limit · 1.0×

PFHxA

3.7 ppt

limit —

No federal limit

PFPeA

3.7 ppt

limit —

No federal limit

PFBS

3.1 ppt

limit —

No federal limit

Violations & enforcement

61

Violations on record

0

Unaddressed

7

Health-based

46

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Sep 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Apr 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Sep 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2015 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Dec 2014 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2007 Resolved

Recent enforcement actions

  • State action · SFL Aug 2025
  • State action · SOX Aug 2025
  • State action · SFJ Jul 2025
  • State action · SIE Sep 2022
  • State action · SOX Oct 2018
  • State action · SFJ Jul 2018
  • State action · SOX Jul 2018
  • State action · SFL Jul 2018

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 Aug 2024

1.06 · max 2.13 mg/L · 19

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 MA2174000 — 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.