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Water system · PWSID NH0613060

CENTENNIAL ESTATES

DERRY, NH · ~140 people served

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

PWSID

NH0613060

State

New Hampshire

City

DERRY

Population served

140

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

75

Violations on record

0

Unaddressed

3

Health-based

69

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2024. Official EPA record →

Max contaminant level (MCL) · Nitrate health-based began Jul 2023 Resolved
Other · EPA contaminant 7500 began Oct 2012 Resolved
Other · EPA contaminant 7500 began Oct 2012 Resolved
Monitoring & reporting · EPA contaminant 3014 began Aug 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2012 Resolved
Monitoring & reporting · Total coliform began Jul 2012 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Other · EPA contaminant 7500 began Jun 2012 Resolved
Monitoring & reporting · Total coliform began Apr 2012 Resolved
Monitoring & reporting · Total coliform began Oct 2011 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2037 began Jan 2009 Resolved

Recent enforcement actions

  • State action · SOX Feb 2024
  • State action · SIF Aug 2023
  • State action · SIA Aug 2023
  • State action · SIE Aug 2023
  • State action · SOX Mar 2013
  • State action · SOX Jan 2013
  • State action · SIF Jan 2013
  • State action · SOX Jan 2013

This profile is built from EPA public records for system NH0613060 — 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.