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Water system · PWSID MT0004249

CLARKS LOOKOUT

DILLON, MT · ~62 people served

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

PWSID

MT0004249

State

Montana

City

DILLON

Population served

62

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

66

Violations on record

0

Unaddressed

26

Health-based

161

Enforcement actions

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

Other · EPA contaminant 7000 began Oct 2025 Resolved
Other · EPA contaminant 7000 began Oct 2024 Resolved
Other · EPA contaminant 7000 began Jul 2024 Resolved
Other · EPA contaminant 7000 began Oct 2023 Resolved
Other · EPA contaminant 7000 began Jul 2021 Resolved
Other · EPA contaminant 7000 began Oct 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2019 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2018 Resolved

Recent enforcement actions

  • State action · SOX Oct 2025
  • State action · SIA Oct 2025
  • State action · SOX Oct 2024
  • State action · SOX Oct 2024
  • State action · SIA Oct 2024
  • State action · SIA Jul 2024
  • State action · SOX Oct 2023
  • State action · SIA Oct 2023

This profile is built from EPA public records for system MT0004249 — 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.