MOBILE CITY 3

BILLINGS, MT · ~40 people served

Check your exact address → BILLINGS overview

100

Excellent

PurityRadar safety score

PWSID

MT0005088

State

Montana

City

BILLINGS

Population served

Primary source

SWP

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 Jul 2025. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2025 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2025 Resolved

Monitoring · Lead & Copper Rule began Dec 2024 Resolved

Monitoring & reporting · Lead & Copper Rule began Sep 2022 Resolved

Recent enforcement actions

State action · SIA Jul 2025
State action · SOX Jul 2025
State action · SIE Jul 2025
State action · SOX Jan 2025
State action · SIA Jan 2025
State action · SIE Jan 2025
State action · SOX Nov 2024
State action · SIA Oct 2022

This profile is built from EPA public records for system MT0005088 — 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.