LITTLETON WATER AND LIGHT

LITTLETON, NH · ~6,500 people served

Check your exact address → LITTLETON overview

100

Excellent

PurityRadar safety score

PWSID

NH1381010

State

New Hampshire

City

LITTLETON

Population served

6,500

Primary source

Surface water

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 Nov 2011. Official EPA record →

Monitoring & reporting · Total coliform began Sep 2011 Resolved

Other · EPA contaminant 7000 began Jul 2009 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2006 Resolved

Max contaminant level (MCL) · Total coliform health-based began Oct 2002 Resolved

Treatment technique · EPA contaminant 0200 health-based began Sep 1998 Resolved

Treatment technique · EPA contaminant 0200 health-based began Aug 1998 Resolved

Treatment technique · EPA contaminant 0200 health-based began Mar 1998 Resolved

Treatment technique · EPA contaminant 0200 health-based began Feb 1998 Resolved

Treatment technique · EPA contaminant 0200 health-based began Nov 1997 Resolved

Treatment technique · EPA contaminant 0200 health-based began Oct 1997 Resolved

Treatment technique · EPA contaminant 0200 health-based began Aug 1997 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jul 1997 Resolved

Recent enforcement actions

State action · SIF Nov 2011
State action · SOX Oct 2011
State action · SIA Oct 2011
State action · SIE Oct 2011
State action · SOX Jul 2009
State action · SIA Jul 2009
State action · SOX Jul 2007
State action · SIF May 2006

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Lead

1 station · latest Jul 2022

0.0012 · max 0.0012 mg/L · 1

Nitrate

1 station · latest Jul 2022

0.16 · max 0.16 mg/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system NH1381010 — 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.