Home/ Directory/ MT/ HARLOWTON CITY OF

Water system · PWSID MT0000240

HARLOWTON CITY OF

HARLOWTON, MT · ~1,050 people served

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

PWSID

MT0000240

State

Montana

City

HARLOWTON

Population served

1,050

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

28

Violations on record

0

Unaddressed

1

Health-based

73

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2025 Resolved
Other · EPA contaminant 7000 began Oct 2024 Resolved
Other · EPA contaminant 7000 began Jul 2024 Resolved
Monitoring · Lead & Copper Rule began Jun 2024 Resolved
Other · EPA contaminant 7000 began Jul 2023 Resolved
Other · EPA contaminant 7000 began Jul 2017 Resolved
Other · EPA contaminant 7000 began Jul 2009 Resolved
Monitoring & reporting · Thallium began Jan 2009 Resolved
Monitoring & reporting · Thallium began Jan 2009 Resolved
Monitoring & reporting · Thallium began Jan 2009 Resolved
Monitoring & reporting · Arsenic began Jul 2008 Resolved
Other · EPA contaminant 7000 began Jul 2008 Resolved

Recent enforcement actions

  • State action · SOX Jul 2025
  • State action · SOX Jul 2025
  • State action · SIA Jul 2025
  • State action · SIA Oct 2024
  • State action · SOX Oct 2024
  • State action · SIF Jul 2024
  • State action · SIA Jul 2024
  • State action · SIA Jul 2024

This profile is built from EPA public records for system MT0000240 — 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.