PWSID
MT0004059
State
Montana
City
COLUMBUS
Population served
25
Primary source
Groundwater
Score history
No change since tracking began Jun 18, 2026.
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
61
Violations on record
0
Unaddressed
1
Health-based
82
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Aug 2024. Official EPA record →
Recent enforcement actions
- State action · SOX Aug 2024
- State action · SIA Jul 2024
- State action · SOX Jul 2023
- State action · SIF Jul 2023
- State action · SIE Jul 2023
- State action · SIA Jul 2023
- State action · SOX Apr 2023
- State action · SOX Apr 2023
This profile is built from EPA public records for system MT0004059 — 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.