Is ROUND BUTTE WATER COMPANY required to publish a Consumer Confidence Report?

Yes. ROUND BUTTE WATER COMPANY 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 ROUND BUTTE WATER COMPANY’s next Consumer Confidence Report due?

ROUND BUTTE WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

RONAN, MT · Lake County

ROUND BUTTE WATER COMPANY Water System

Consumer Confidence Report status

ROUND BUTTE WATER COMPANY 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 ROUND BUTTE WATER COMPANY.

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): MT0000320
System type: Community Water System
Population served: 400
Service connections: 160
Ownership: privately owned
Water source: groundwater (wells)

ROUND BUTTE WATER COMPANY is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 400 people from groundwater.

As of August 1, 2026, its federal record holds 11 entries between 1995 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.

Of the 11, 5 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 the Total Coliform Rules, the Groundwater Rule, and the Consumer Confidence Rule.

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2021 – January 19, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2021 – May 31, 2021
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
April 27, 2021 – May 17, 2021
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2015 – April 30, 2015
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 21, 2014 – September 30, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2014 – August 31, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – July 22, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2006 – February 21, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2005 – June 30, 2005
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
August 1, 1995 – August 31, 1995
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1995 – August 31, 1995
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 30, 2021 – January 19, 2022	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
May 1, 2021 – May 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 27, 2021 – May 17, 2021	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
April 1, 2015 – April 30, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 21, 2014 – September 30, 2014	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
August 1, 2014 – August 31, 2014	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2013 – July 22, 2013	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2006 – February 21, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2005 – June 30, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 1995 – August 31, 1995	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 1995 – August 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 19, 2022State Compliance achieved1 linked violation
January 4, 2022State Violation/Reminder Notice1 linked violation
June 28, 2021State Public Notification received1 linked violation
June 21, 2021State Compliance achieved1 linked violation
June 15, 2021State Public Notification requested1 linked violation
June 15, 2021State Violation/Reminder Notice1 linked violation
June 11, 2021State Public Notification requested1 linked violation
June 11, 2021State Violation/Reminder Notice1 linked violation
May 17, 2021State Compliance achieved1 linked violation
May 16, 2015State Public Notification received1 linked violation
May 11, 2015State Compliance achieved1 linked violation
April 30, 2015State Public Notification requested1 linked violation
April 30, 2015State Violation/Reminder Notice1 linked violation
April 30, 2015State Violation/Reminder Notice1 linked violation
September 30, 2014State Compliance achieved1 linked violation
September 30, 2014State Public Notification received1 linked violation
September 18, 2014State Violation/Reminder Notice1 linked violation
September 18, 2014State Compliance achieved1 linked violation
September 18, 2014State Public Notification requested1 linked violation
September 15, 2014State Public Notification received1 linked violation
August 28, 2014State Public Notification requested1 linked violation
August 28, 2014State Violation/Reminder Notice1 linked violation
August 28, 2014State Violation/Reminder Notice1 linked violation
July 22, 2013State Compliance achieved1 linked violation
July 16, 2013State Violation/Reminder Notice1 linked violation
May 15, 2009State Compliance achieved3 linked violations
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved2 linked violations
May 15, 2009State Compliance achieved1 linked violation
February 21, 2007State Compliance achieved1 linked violation
February 5, 2007State Violation/Reminder Notice1 linked violation
February 22, 2006State Public Notification received1 linked violation
January 5, 2006State Compliance achieved3 linked violations
June 16, 2005State Public Notification requested2 linked violations
June 16, 2005State Violation/Reminder Notice2 linked violations

Common questions

Is ROUND BUTTE WATER COMPANY required to publish a Consumer Confidence Report?: Yes. ROUND BUTTE WATER COMPANY 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 ROUND BUTTE WATER COMPANY’s next Consumer Confidence Report due?: ROUND BUTTE WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does ROUND BUTTE WATER COMPANY have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for ROUND BUTTE WATER COMPANY.
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

HERREID, GERI

406-883-8066

RONAN, MT 59864