Drinking Water Compliance OS

HELENA, MT · Lewis and Clark County

BARNETT WATER USERS SYSTEM Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Montana’s official records. Always confirm current status with Montana before making decisions based on this information.

System facts

System ID (PWSID)
MT0003183
System type
Community Water System
Population served
70
Service connections
29
Ownership
privately owned
Water source
groundwater (wells)

Violation history

  • Lead Consumer Notice

    Lead and Copper Rule

    December 30, 2024 – March 10, 2025

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    BHC-GAMMA

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Dalapon

    January 1, 2023 – December 31, 2025

    Archived
  • Lead Consumer Notice

    Lead and Copper Rule

    December 30, 2015 – February 1, 2016

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Arsenic

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2011 – December 31, 2013

    Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Contact

SENNETT, MIKE R

406-461-5718

HELENA, MT 59602