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Water system · PWSID NH1851010

WILLIAMSBURG

NASHUA, NH · ~928 people served

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

PWSID

NH1851010

State

New Hampshire

City

NASHUA

Population served

928

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

23

Violations on record

0

Unaddressed

0

Health-based

4

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2011. Official EPA record →

Monitoring & reporting · EPA contaminant 0999 began Jul 2010 Resolved
Monitoring & reporting · Nitrate began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2378 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2968 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2979 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2980 began Jan 1993 Resolved

Recent enforcement actions

  • State action · SOX Mar 2011
  • State action · SIA Oct 2010
  • State action · SOX Jul 1996
  • State action · SIA May 1996

This profile is built from EPA public records for system NH1851010 — 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.