DEVON WATER INC

SHELBY, MT · ~75 people served

Check your exact address → SHELBY overview

100

Excellent

PurityRadar safety score

PWSID

MT0000200

State

Montana

City

SHELBY

Population served

Primary source

GWP

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

267

Violations on record

Unaddressed

Health-based

178

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2025. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed

Other · EPA contaminant 7000 began Jul 2024 Unaddressed

Monitoring & reporting · Lead & Copper Rule began Oct 2023 Resolved

Other · EPA contaminant 7000 began Jul 2023 Resolved

Other · EPA contaminant 7000 began Jul 2022 Resolved

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

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

Monitoring & reporting · Lead & Copper Rule began Jul 2021 Resolved

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

Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2020 Resolved

Other · EPA contaminant 7000 began Jul 2020 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2020 Resolved

Recent enforcement actions

State action · SIE Oct 2025
State action · SIA Oct 2025
State action · SIA Jul 2024
State action · SOX Feb 2024
State action · SIA Nov 2023
State action · SOX Jul 2023
State action · SIA Jul 2023
State action · SOX Sep 2022

This profile is built from EPA public records for system MT0000200 — 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.