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Water system · PWSID NH0773020

COLBY BROOK ESTATES

EPSOM, NH · ~68 people served

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

PWSID

NH0773020

State

New Hampshire

City

EPSOM

Population served

68

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

35

Violations on record

0

Unaddressed

7

Health-based

63

Enforcement actions

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

Max contaminant level (MCL) · Total coliform health-based began Jun 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2013 Resolved
Monitoring & reporting · Total coliform began Jun 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2012 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2012 Resolved
Monitoring & reporting · Arsenic began Jan 2007 Resolved
Monitoring & reporting · Arsenic began Jul 2006 Resolved
Other · EPA contaminant 7000 began Jul 2002 Resolved
Other · EPA contaminant 7000 began Oct 1999 Resolved
Monitoring & reporting · Arsenic began Oct 1997 Resolved

Recent enforcement actions

  • State action · SOX Dec 2014
  • State action · SOX Dec 2014
  • State action · SIF Jul 2014
  • State action · SIE Jun 2014
  • State action · SIA Jun 2014
  • State action · SIF Jan 2014
  • State action · SIE Dec 2013
  • State action · SIA Dec 2013

This profile is built from EPA public records for system NH0773020 — 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.