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Water system · PWSID MT0004739

ELK CREEK COLONY

AUGUSTA, MT · ~84 people served

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

PWSID

MT0004739

State

Montana

City

AUGUSTA

Population served

84

Primary source

Groundwater

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

160

Violations on record

1

Unaddressed

8

Health-based

115

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2024 Unaddressed
Other · EPA contaminant 7000 began Jul 2021 Resolved
Other · EPA contaminant 7000 began Jul 2020 Resolved
Max contaminant level (MCL) · Thallium health-based began Apr 2020 Resolved
Max contaminant level (MCL) · Thallium health-based began Jan 2020 Resolved
Max contaminant level (MCL) · Thallium health-based began Oct 2019 Resolved
Max contaminant level (MCL) · Thallium health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Thallium health-based began Apr 2019 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 3014 began Nov 2018 Resolved
Max contaminant level (MCL) · Thallium health-based began Jul 2018 Resolved
Max contaminant level (MCL) · Thallium health-based began Apr 2018 Resolved

Recent enforcement actions

  • State action · SIA Nov 2024
  • State action · SIE Nov 2024
  • State action · SOX Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Jul 2023

This profile is built from EPA public records for system MT0004739 — 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.