Is PRAIRIE WATER COMPANY required to publish a Consumer Confidence Report?

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

PRAIRIE 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.

GREAT FALLS, MT · Cascade County

PRAIRIE WATER COMPANY Water System

Consumer Confidence Report status

PRAIRIE 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 3 items for PRAIRIE WATER COMPANY that are open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

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): MT0003539
System type: Community Water System
Population served: 1,000
Service connections: 550
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

PRAIRIE WATER COMPANY is one of 123 community water systems in Montana in the 501 to 3,300 people size category, serving 1,000 people from surface water.

As of August 1, 2026, its federal record holds 35 entries between 1997 and 2024, of which 3 remain open; none are health-based.

Of the 35, 24 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 Lead and Copper Rule, the Consumer Confidence Rule, and the Total Coliform Rules.

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2024 – July 1, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2024
Unaddressed
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – July 1, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2023
Unaddressed
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2023 – September 30, 2023
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023
Unaddressed
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2021 – July 1, 2025
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2018 – October 17, 2018
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2015 – February 1, 2016
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2014 – October 23, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – July 24, 2013
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2012 – December 3, 2012
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – December 3, 2012
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2012 – January 26, 2016
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2011 – February 18, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – February 18, 2021
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2010 – September 26, 2011
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2007 – November 27, 2007
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2006 – May 17, 2007
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2006 – November 27, 2007
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2005 – November 27, 2007
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2005 – August 14, 2006
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2005 – May 17, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2005 – February 28, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2004 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2004 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2003 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2003 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2002 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2002 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2001 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2001 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2000 – August 14, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2000 – August 14, 2006
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1997 – July 31, 1997
Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Period	Violation	Contaminant / rule	Health-based	Status
December 30, 2024 – July 1, 2025	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
July 1, 2024 – July 1, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2023	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
September 1, 2023 – September 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Unaddressed
December 30, 2021 – July 1, 2025	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2018 – October 17, 2018	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
December 30, 2015 – February 1, 2016	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2014 – October 23, 2014	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2013 – July 24, 2013	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2012 – December 3, 2012	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2012 – December 3, 2012	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2012 – January 26, 2016	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
October 1, 2011 – February 18, 2021	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2011 – February 18, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2010 – September 26, 2011	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2007 – November 27, 2007	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2006 – May 17, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2006 – November 27, 2007	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2005 – November 27, 2007	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2005 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2005 – May 17, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
February 1, 2005 – February 28, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2004 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2004 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2003 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2003 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2002 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2002 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2001 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2001 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 2000 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2000 – August 14, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 1997 – July 31, 1997	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

July 1, 2025State Compliance achieved1 linked violation
July 1, 2025State Compliance achieved1 linked violation
July 1, 2025State Compliance achieved1 linked violation
February 4, 2025State Violation/Reminder Notice1 linked violation
October 1, 2024State Violation/Reminder Notice1 linked violation
July 23, 2024State Violation/Reminder Notice1 linked violation
October 30, 2023State Compliance achieved1 linked violation
October 24, 2023State Public Notification requested1 linked violation
October 24, 2023State Violation/Reminder Notice1 linked violation
October 13, 2023State Violation/Reminder Notice1 linked violation
July 11, 2023State Violation/Reminder Notice1 linked violation
January 4, 2022State Violation/Reminder Notice1 linked violation
February 18, 2021State Compliance achieved2 linked violations
October 23, 2018State Public Notification requested1 linked violation
October 23, 2018State Violation/Reminder Notice1 linked violation
October 17, 2018State Compliance achieved1 linked violation
February 1, 2016State Compliance achieved1 linked violation
February 1, 2016State Violation/Reminder Notice1 linked violation
January 26, 2016State Compliance achieved1 linked violation
October 23, 2014State Compliance achieved1 linked violation
October 23, 2014State Public Notification requested1 linked violation
October 23, 2014State Violation/Reminder Notice1 linked violation
July 24, 2013State Compliance achieved1 linked violation
July 16, 2013State Violation/Reminder Notice1 linked violation
December 3, 2012State Compliance achieved2 linked violations
November 14, 2012State Violation/Reminder Notice1 linked violation
July 12, 2012State Violation/Reminder Notice1 linked violation
July 12, 2012State Public Notification requested1 linked violation
February 15, 2012State Violation/Reminder Notice1 linked violation
October 28, 2011State Public Notification requested1 linked violation
October 28, 2011State Violation/Reminder Notice1 linked violation
September 26, 2011State Compliance achieved1 linked violation
August 1, 2011State Public Notification requested1 linked violation
August 1, 2011State Violation/Reminder Notice1 linked violation
October 30, 2010State Public Notification requested1 linked violation
October 30, 2010State Violation/Reminder Notice1 linked violation
January 9, 2009State Compliance achieved3 linked violations
March 6, 2008State Public Notification received2 linked violations
November 27, 2007State Compliance achieved3 linked violations
September 4, 2007State Administrative/Compliance Order with penalty issued14 linked violations
May 17, 2007State Compliance achieved2 linked violations
February 13, 2007State Public Notification requested1 linked violation
February 13, 2007State Violation/Reminder Notice2 linked violations
February 13, 2007State Public Notification requested1 linked violation
February 13, 2007State Violation/Reminder Notice1 linked violation
February 12, 2007State Other2 linked violations
August 14, 2006State Compliance achieved12 linked violations
July 25, 2006State Other1 linked violation
August 16, 2005State Violation/Reminder Notice1 linked violation
April 12, 2005State Compliance achieved1 linked violation
March 28, 2005State Public Notification requested1 linked violation
March 28, 2005State Violation/Reminder Notice1 linked violation
January 4, 2005State Violation/Reminder Notice1 linked violation
January 4, 2005State Public Notification requested1 linked violation
April 18, 1992State Compliance achieved1 linked violation

Common questions

Is PRAIRIE WATER COMPANY required to publish a Consumer Confidence Report?: Yes. PRAIRIE 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 PRAIRIE WATER COMPANY’s next Consumer Confidence Report due?: PRAIRIE WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does PRAIRIE WATER COMPANY have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 3 items for PRAIRIE WATER COMPANY that are open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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

BRINK, DOUG

406-727-7881

GREAT FALLS, MT 59404