CASCADE TOWN OF

CASCADE, MT · ~650 people served

Check your exact address → CASCADE overview

100

Excellent

PurityRadar safety score

PWSID

MT0000171

State

Montana

City

CASCADE

Population served

650

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 Aug 2016. Official EPA record →

Monitoring & reporting · Haloacetic acids (HAA5) began Sep 2014 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Sep 2014 Resolved

Monitoring & reporting · Thallium began Jan 2005 Resolved

Monitoring & reporting · Thallium began Jan 2001 Resolved

Monitoring & reporting · Total coliform began Aug 1995 Resolved

Monitoring & reporting · Total coliform began Jul 1995 Resolved

Monitoring & reporting · Total coliform began Mar 1992 Resolved

Recent enforcement actions

State action · SOX Aug 2016
State action · SIE Oct 2015
State action · SIA Oct 2015
State action · SOX Dec 2008
State action · SOX Feb 2006
State action · SIE Feb 2006
State action · SIA Feb 2006
State action · SOX Dec 2002

This profile is built from EPA public records for system MT0000171 — 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.