DOUBLE DIAMOND SUBDIVISION ARBOR HILLS

BILLINGS, MT · ~50 people served

Check your exact address → BILLINGS overview

100

Excellent

PurityRadar safety score

PWSID

MT0004845

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 2023. Official EPA record →

Other · EPA contaminant 7000 began Jul 2023 Resolved

Other · EPA contaminant 7000 began Jul 2018 Resolved

Monitoring & reporting · Lead & Copper Rule began Apr 2015 Resolved

Monitoring & reporting · Lead & Copper Rule began Sep 2014 Resolved

Monitoring & reporting · Total coliform began May 2014 Resolved

Monitoring & reporting · Total coliform began Dec 2013 Resolved

Monitoring & reporting · Total coliform began Nov 2013 Resolved

Recent enforcement actions

State action · SIA Jul 2023
State action · SOX Jul 2023
State action · SOX Aug 2018
State action · SIA Jul 2018
State action · SOX May 2015
State action · SOX May 2015
State action · SIA Apr 2015
State action · SIA Oct 2014

This profile is built from EPA public records for system MT0004845 — 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.