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Water system · PWSID MT0000428

HYSHAM TOWN OF

HYSHAM, MT · ~262 people served

Check your exact address → HYSHAM overview
100
Excellent
PurityRadar safety score

PWSID

MT0000428

State

Montana

City

HYSHAM

Population served

262

Primary source

Surface water

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

115

Violations on record

0

Unaddressed

2

Health-based

78

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2023. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2023 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2023 Resolved
Treatment technique · EPA contaminant 0200 health-based began Aug 2022 Resolved
Other · EPA contaminant 7000 began Jul 2022 Resolved
Treatment technique · EPA contaminant 0200 health-based began Apr 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2021 Resolved
Other · EPA contaminant 7000 began Jul 2021 Resolved
Monitoring & reporting · Arsenic began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 2020 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jan 2020 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 2020 Resolved
Monitoring & reporting · EPA contaminant 2979 began Jan 2020 Resolved

Recent enforcement actions

  • State action · SOX Oct 2023
  • State action · SIE Oct 2023
  • State action · SIA Oct 2023
  • State action · SOX Feb 2023
  • State action · SOX Feb 2023
  • State action · SOX Feb 2023
  • State action · SOX Feb 2023
  • State action · SOX Feb 2023

This profile is built from EPA public records for system MT0000428 — 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.