Public Water Partners

HELENA, MT · Lewis and Clark County

BARNETT WATER USERS SYSTEM Water System

Consumer Confidence Report status

BARNETT WATER USERS SYSTEM must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for BARNETT WATER USERS SYSTEM.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)

BARNETT WATER USERS SYSTEM is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 70 people from groundwater.

As of August 1, 2026, its federal record holds 7 entries between 2011 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

All 7 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, inorganic chemicals, and volatile organic chemicals.

Violation history

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 2023 – December 31, 2025

    Resolved

  • Monitoring, Regular

    —

    Benzo(a)pyrene

    January 1, 2023 – December 31, 2025

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 2023 – December 31, 2025

    Resolved

  • Monitoring, Regular

    —

    Cadmium

    January 1, 2023 – December 31, 2025

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 2023 – December 31, 2025

    Resolved

  • Monitoring, Regular

    —

    Beryllium, Total

    January 1, 2014 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Arsenic

    January 1, 2011 – December 31, 2013

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is BARNETT WATER USERS SYSTEM required to publish a Consumer Confidence Report?

Yes. BARNETT WATER USERS SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is BARNETT WATER USERS SYSTEM’s next Consumer Confidence Report due?

BARNETT WATER USERS SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does BARNETT WATER USERS SYSTEM have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for BARNETT WATER USERS SYSTEM.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

SENNETT, MIKE R

406-461-5718

HELENA, MT 59602