AVISTA UTILITIES NOXON RAPIDS DAM

NOXON, MT · ~43 people served

Check your exact address → NOXON overview

100

Excellent

PurityRadar safety score

PWSID

MT0000300

State

Montana

City

NOXON

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 Sep 2024. Official EPA record →

Monitoring & reporting · EPA contaminant 1094 began Jan 2020 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2010 Resolved

Other · EPA contaminant 7000 began Jul 2005 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2004 Resolved

Monitoring & reporting · Arsenic began Jan 1996 Resolved

Monitoring & reporting · Total coliform began Jul 1994 Resolved

Monitoring & reporting · Total coliform began Feb 1994 Resolved

Recent enforcement actions

State action · SOX Sep 2024
State action · SIA Sep 2024
State action · SIE Sep 2024
State action · SOX Feb 2011
State action · SIA Jan 2011
State action · SOX Aug 2009
State action · SOX Dec 2008
State action · SOX Aug 2006

This profile is built from EPA public records for system MT0000300 — 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.