Is CONSOLIDATED CHARLO LAKE CO W AND S DIST required to publish a Consumer Confidence Report?

Yes. CONSOLIDATED CHARLO LAKE CO W AND S DIST 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 CONSOLIDATED CHARLO LAKE CO W AND S DIST’s next Consumer Confidence Report due?

CONSOLIDATED CHARLO LAKE CO W AND S DIST’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.

CHARLO, MT · Lake County

CONSOLIDATED CHARLO LAKE CO W AND S DIST Water System

Consumer Confidence Report status

CONSOLIDATED CHARLO LAKE CO W AND S DIST 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 CONSOLIDATED CHARLO LAKE CO W AND S DIST.

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): MT0000172
System type: Community Water System
Population served: 450
Service connections: 172
Ownership: local government
Water source: groundwater (wells)

CONSOLIDATED CHARLO LAKE CO W AND S DIST is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 450 people from groundwater.

As of August 1, 2026, its federal record holds 40 entries between 1994 and 2025, all of which EPA lists as closed.

Of the 40, 37 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 volatile organic chemicals, the Total Coliform Rules, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – July 17, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2021 – August 2, 2021
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2021 – December 31, 2023
Archived
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2021 – December 31, 2023
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – August 11, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2020 – June 30, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2017 – February 28, 2017
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2015 – October 31, 2015
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2015 – March 31, 2015
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2014 – September 30, 2014
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2014 – February 7, 2014
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2014 – August 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2014 – August 31, 2016
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2009 – April 30, 2009
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Benzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Styrene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Toluene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Benzene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2006 – December 31, 2006
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2004 – September 28, 2004
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1994 – April 30, 1994
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025 – July 17, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2021 – August 2, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2021 – December 31, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
January 1, 2021 – December 31, 2023	Monitoring and Reporting (DBP)	TTHM	—	Archived
July 1, 2020 – August 11, 2020	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2020 – June 30, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
February 1, 2017 – February 28, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2015 – October 31, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2014 – September 30, 2014	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2014 – February 7, 2014	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2014 – August 31, 2016	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2014 – August 31, 2016	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2009 – April 30, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Benzene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Styrene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Toluene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Benzene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Xylenes, Total	—	Resolved
October 1, 2004 – September 28, 2004	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 1994 – April 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

July 17, 2025State Compliance achieved1 linked violation
July 17, 2025State Violation/Reminder Notice1 linked violation
October 18, 2023State Public Notification requested2 linked violations
October 18, 2023State Violation/Reminder Notice2 linked violations
August 2, 2021State Compliance achieved1 linked violation
July 19, 2021State Violation/Reminder Notice1 linked violation
August 11, 2020State Compliance achieved1 linked violation
July 27, 2020State Compliance achieved1 linked violation
July 21, 2020State Public Notification requested1 linked violation
July 21, 2020State Violation/Reminder Notice1 linked violation
July 20, 2020State Violation/Reminder Notice1 linked violation
August 10, 2017State Compliance achieved2 linked violations
March 30, 2017State Compliance achieved1 linked violation
March 15, 2017State Public Notification requested1 linked violation
March 15, 2017State Violation/Reminder Notice1 linked violation
October 20, 2016State Violation/Reminder Notice2 linked violations
October 20, 2016State Public Notification requested2 linked violations
November 23, 2015State Compliance achieved1 linked violation
November 16, 2015State Violation/Reminder Notice1 linked violation
November 16, 2015State Public Notification requested1 linked violation
July 8, 2015State Compliance achieved1 linked violation
May 8, 2015State Public Notification requested1 linked violation
May 8, 2015State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 11, 2015State Compliance achieved1 linked violation
October 17, 2014State Public Notification requested1 linked violation
October 17, 2014State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 17, 2014State Violation/Reminder Notice1 linked violation
February 7, 2014State Compliance achieved1 linked violation
January 23, 2014State Violation/Reminder Notice1 linked violation
February 19, 2013State Compliance achieved1 linked violation
October 25, 2012State Violation/Reminder Notice1 linked violation
October 25, 2012State Public Notification requested1 linked violation
October 15, 2010State Compliance achieved1 linked violation
December 7, 2009State Compliance achieved1 linked violation
November 14, 2009State Violation/Reminder Notice1 linked violation
November 14, 2009State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 14, 2009State Public Notification requested1 linked violation
May 15, 2009State Public Notification requested1 linked violation
May 15, 2009State Violation/Reminder Notice1 linked violation
March 19, 2009State Compliance achieved21 linked violations
February 10, 2009State Violation/Reminder Notice21 linked violations
February 10, 2009State Public Notification requested21 linked violations
December 31, 2008State Compliance achieved2 linked violations
March 13, 2007State Compliance achieved21 linked violations
January 14, 2007State Violation/Reminder Notice21 linked violations
January 14, 2007State Public Notification requested21 linked violations
January 4, 2005State Violation/Reminder Notice1 linked violation
January 4, 2005State Public Notification requested1 linked violation
September 28, 2004State Compliance achieved1 linked violation
September 1, 1992State Violation/Reminder Notice3 linked violations

Common questions

Is CONSOLIDATED CHARLO LAKE CO W AND S DIST required to publish a Consumer Confidence Report?: Yes. CONSOLIDATED CHARLO LAKE CO W AND S DIST 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 CONSOLIDATED CHARLO LAKE CO W AND S DIST’s next Consumer Confidence Report due?: CONSOLIDATED CHARLO LAKE CO W AND S DIST’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CONSOLIDATED CHARLO LAKE CO W AND S DIST have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for CONSOLIDATED CHARLO LAKE CO W AND S DIST.
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

BAUER, JAMIE

406-644-8776

CHARLO, MT 59824