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Water system · PWSID NH2542190

CAMELOT III

DERRY, NH · ~33 people served

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

PWSID

NH2542190

State

New Hampshire

City

DERRY

Population served

33

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

14

Violations on record

0

Unaddressed

12

Health-based

55

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2021. Official EPA record →

Treatment technique · Lead & Copper Rule health-based began Oct 2020 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2016 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2016 Resolved
Other · EPA contaminant 7500 began Nov 2015 Resolved
Other · EPA contaminant 7500 began Oct 2015 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2015 Resolved
Treatment technique · EPA contaminant 0700 health-based began Aug 2015 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2015 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jun 2015 Resolved

Recent enforcement actions

  • State action · SOX Apr 2021
  • State action · SIF Oct 2020
  • State action · SIA Oct 2020
  • State action · SIE Oct 2020
  • State action · SOX Feb 2019
  • State action · SOX Jan 2019
  • State action · SIF Aug 2018
  • State action · SIA Aug 2018

This profile is built from EPA public records for system NH2542190 — 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.