AUBURN WATER DISTRICT

LISBON, ME · ~17,245 people served

Check your exact address → LISBON overview

100

Excellent

PurityRadar safety score

PWSID

ME0090070

State

Maine

City

LISBON

Population served

17,245

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 Mar 2018. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Sep 2017 Resolved

Monitoring & reporting · Total coliform began Oct 2013 Resolved

Treatment technique · EPA contaminant 0300 health-based began Aug 2007 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jul 2006 Resolved

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2003 Resolved

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Apr 2003 Resolved

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2003 Resolved

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2002 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2001 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1998 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 1997 Resolved

Recent enforcement actions

State action · SOX Mar 2018
State action · SFJ Mar 2018
State action · SO6 Nov 2015
State action · SOX Mar 2015
State action · SIF Aug 2014
State action · SIE Dec 2013
State action · SFJ Dec 2013
State action · SO6 Sep 2011

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

Nitrate

2 stations · latest Jul 2023

0.665 · max 1.3 mg/L · 2

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 ME0090070 — 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.