LA CASA GRANDE WATER AND SEWER DISTRICT

EAST HELENA, MT · ~404 people served

Check your exact address → EAST HELENA overview

100

Excellent

PurityRadar safety score

PWSID

MT0001924

State

Montana

City

EAST HELENA

Population served

404

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 Nov 2024. Official EPA record →

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

Monitoring & reporting · Lead & Copper Rule began Oct 2024 Resolved

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

Other · EPA contaminant 7000 began Jul 2014 Resolved

Other · EPA contaminant 7000 began Jul 2011 Resolved

Other · EPA contaminant 7000 began Jul 2008 Resolved

Other · EPA contaminant 7000 began Jul 2007 Resolved

Other · EPA contaminant 7000 began Feb 2007 Resolved

Monitoring & reporting · Total coliform began Oct 2005 Resolved

Monitoring & reporting · Thallium began Jan 2005 Resolved

Max contaminant level (MCL) · Total coliform health-based began Oct 2003 Resolved

Monitoring & reporting · Nitrate began Jan 1997 Resolved

Recent enforcement actions

State action · SIA Nov 2024
State action · SIE Nov 2024
State action · SOX Sep 2024
State action · SOX Aug 2021
State action · SIE Oct 2020
State action · SIA Oct 2020
State action · SOX Jul 2014
State action · SIA Jul 2014

This profile is built from EPA public records for system MT0001924 — 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.