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Water system · PWSID NH0413020

CONNECTICUT RIVER MHP

WALPOLE, NH · ~50 people served

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

PWSID

NH0413020

State

New Hampshire

City

WALPOLE

Population served

50

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

53

Violations on record

0

Unaddressed

11

Health-based

101

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2014 Resolved
Other · EPA contaminant 7500 began Mar 2014 Resolved
Treatment technique · EPA contaminant 0700 health-based began Feb 2014 Resolved
Treatment technique · EPA contaminant 0700 health-based began Feb 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2009 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2008 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2007 Resolved
Treatment technique · Lead & Copper Rule health-based began Apr 2007 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2006 Resolved
Other · EPA contaminant 7000 began Jul 2006 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2006 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2004 Resolved

Recent enforcement actions

  • State action · SOX Dec 2014
  • State action · SIF Dec 2014
  • State action · SOX Dec 2014
  • State action · SOX Sep 2014
  • State action · SFL Jul 2014
  • State action · SFL Jul 2014
  • State action · SFL Jul 2014
  • State action · SIA Jul 2014

This profile is built from EPA public records for system NH0413020 — 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.