ANTELOPE COUNTY WATER AND SEWER

ANTELOPE, MT · ~59 people served

Check your exact address → ANTELOPE overview

100

Excellent

PurityRadar safety score

PWSID

MT0003203

State

Montana

City

ANTELOPE

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

105

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2026. Official EPA record →

Monitoring · Lead & Copper Rule began Dec 2025 Resolved

Monitoring · Lead & Copper Rule began Dec 2024 Resolved

Monitoring · Lead & Copper Rule began Jun 2023 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2023 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2023 Resolved

Monitoring · Lead & Copper Rule began Dec 2021 Resolved

Other · EPA contaminant 7000 began Jul 2021 Resolved

Other · EPA contaminant 7000 began Jul 2020 Resolved

Monitoring · Lead & Copper Rule began Jan 2020 Resolved

Monitoring · Lead & Copper Rule began Sep 2019 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2019 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2019 Resolved

Recent enforcement actions

State action · SOX Jan 2026
State action · SIE Jan 2026
State action · SIA Jan 2026
State action · SIE Jan 2025
State action · SOX Jan 2025
State action · SIA Jan 2025
State action · SOX Jan 2025
State action · SIE Oct 2023

This profile is built from EPA public records for system MT0003203 — 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.