HERON COMMUNITY WATER SYSTEM

HERON, MT · ~84 people served

Check your exact address → HERON overview

100

Excellent

PurityRadar safety score

PWSID

MT0000247

State

Montana

City

HERON

Population served

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 Jan 2021. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2020 Resolved

Max contaminant level (MCL) · Total coliform health-based began May 2014 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2012 Resolved

Monitoring & reporting · Arsenic began Jan 2011 Resolved

Monitoring & reporting · Fluoride began Jan 2011 Resolved

Monitoring & reporting · Uranium began Apr 2008 Resolved

Monitoring & reporting · Gross alpha began Apr 2008 Resolved

Monitoring & reporting · Uranium began Jan 2008 Resolved

Monitoring & reporting · Gross alpha began Jan 2008 Resolved

Monitoring & reporting · Uranium began Oct 2007 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2007 Resolved

Monitoring & reporting · Gross alpha began Oct 2007 Resolved

Recent enforcement actions

State action · SOX Jan 2021
State action · SIA Jan 2021
State action · SOX Jun 2014
State action · SIF Jun 2014
State action · SIA May 2014
State action · SIA May 2014
State action · SIE May 2014
State action · SIE Jan 2014

This profile is built from EPA public records for system MT0000247 — 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.