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Water system · PWSID MT0000199

DENTON TOWN OF

100
Excellent
PurityRadar safety score

PWSID

MT0000199

State

Montana

City

DENTON

Population served

255

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

26

Violations on record

0

Unaddressed

9

Health-based

84

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2022. Official EPA record →

Other · EPA contaminant 7000 began Jul 2022 Resolved
Other · EPA contaminant 7000 began Jul 2021 Resolved
Monitoring · Lead & Copper Rule began Jun 2021 Resolved
Monitoring & reporting · Thallium began Oct 2018 Resolved
Monitoring · Lead & Copper Rule began Jun 2017 Resolved
Max contaminant level (MCL) · Thallium health-based began Jan 2016 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jun 2014 Addressed
Monitoring & reporting · Lead & Copper Rule began Jan 2014 Resolved
Other · EPA contaminant 7000 began Oct 2013 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Max contaminant level (MCL) · Thallium health-based began Jul 2012 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved

Recent enforcement actions

  • State action · SOX Aug 2022
  • State action · SIA Jul 2022
  • State action · SOX Jul 2021
  • State action · SOX Jul 2021
  • State action · SIA Jul 2021
  • State action · SIE Jul 2021
  • State action · SIA Jul 2021
  • State action · SIA Jan 2019

This profile is built from EPA public records for system MT0000199 — 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.