CARROLL WATER WORKS

TWIN MOUNTAIN, NH · ~875 people served

Check your exact address → TWIN MOUNTAIN overview

100

Excellent

PurityRadar safety score

PWSID

NH0381010

State

New Hampshire

City

TWIN MOUNTAIN

Population served

875

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 1994. Official EPA record →

Treatment technique · EPA contaminant 0200 health-based began Jan 1992 Resolved

Recent enforcement actions

State action · SOX Dec 1994
State action · SFL Jun 1993
State action · SIE Sep 1991
State action · SIA Sep 1991
State action · SID Jun 1991
State action · SIA Nov 1989
State action · SIE Nov 1989
State action · SIE Sep 1988

This profile is built from EPA public records for system NH0381010 — 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.