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Water system · PWSID NH1471010

MANCHESTER WATER WORKS

MANCHESTER, NH · ~123,500 people served

Check your exact address → MANCHESTER overview
86
Excellent
PurityRadar safety score

PWSID

NH1471010

State

New Hampshire

City

MANCHESTER

Population served

123,500

Primary source

Surface water

Score history

▼ 14 points — the score moved from 100 to 86 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 86

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

PFOA

Perfluorooctanoic acid

5 ppt

limit 4 ppt

Above EPA limit · 1.3×

Violations & enforcement

2

Violations on record

0

Unaddressed

1

Health-based

6

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2014. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jul 2013 Resolved
Monitoring & reporting · EPA contaminant 0200 began Dec 2006 Resolved

Recent enforcement actions

  • State action · SOX Feb 2014
  • State action · SIF Aug 2013
  • State action · SIA Aug 2013
  • State action · SIE Aug 2013
  • State action · SOX Jun 2007
  • State action · SIA Jan 2007

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 Jul 2022

2.9 · max 2.9 mg/L · 1

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 NH1471010 — 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.