Is SHELBY CITY OF required to publish a Consumer Confidence Report?

Yes. SHELBY CITY OF 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 SHELBY CITY OF’s next Consumer Confidence Report due?

SHELBY CITY OF’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.

SHELBY, MT · Toole County

SHELBY CITY OF Water System

Consumer Confidence Report status

SHELBY CITY OF 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 1 item for SHELBY CITY OF that is 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): MT0000328
System type: Community Water System
Population served: 3,970
Service connections: 1,233
Ownership: local government
Water source: groundwater (wells)

SHELBY CITY OF serves 3,970 people from groundwater, placing it in the 3,301 to 10,000 people size category.

As of August 1, 2026, its federal record holds 19 entries between 1994 and 2024, of which 1 remains open; none are health-based.

Of the 19, 12 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 Lead and Copper Rule, and the Consumer Confidence Rule.

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2024
Unaddressed
Monitoring, Source Water (GWR)
—
E. COLI
July 22, 2020 – August 24, 2020
Resolved
Monitoring, Regular
—
Asbestos
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
October 9, 2019 – December 16, 2019
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2017 – February 5, 2018
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
June 1, 2015 – June 30, 2015
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2014 – January 30, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – July 22, 2014
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – September 3, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2012 – September 30, 2012
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – August 10, 2011
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2004 – December 31, 2004
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2002 – July 31, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2002 – June 30, 2002
Resolved
Monitoring, Regular
—
Asbestos
January 1, 2002 – December 31, 2010
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 1997 – April 30, 1997
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
March 1, 1996 – March 31, 1996
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
June 1, 1994 – June 30, 1994
Resolved

Unaddressed no corrective action on record yetResolved 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
October 1, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
July 22, 2020 – August 24, 2020	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Asbestos	—	Resolved
October 9, 2019 – December 16, 2019	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
December 30, 2017 – February 5, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
June 1, 2015 – June 30, 2015	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
December 30, 2014 – January 30, 2015	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2014 – July 22, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2013 – September 3, 2013	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
September 1, 2012 – September 30, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2011 – August 10, 2011	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2002 – July 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2002 – June 30, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2002 – December 31, 2010	Monitoring, Regular	Asbestos	—	Archived
April 1, 1997 – April 30, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
March 1, 1996 – March 31, 1996	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 1994 – June 30, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

May 13, 2026State Compliance achieved1 linked violation
January 23, 2023State Public Notification requested2 linked violations
August 21, 2020State Public Notification requested1 linked violation
August 21, 2020State Violation/Reminder Notice1 linked violation
December 16, 2019State Compliance achieved2 linked violations
December 11, 2019State Public Notification requested2 linked violations
December 11, 2019State Violation/Reminder Notice1 linked violation
January 31, 2018State Violation/Reminder Notice2 linked violations
October 1, 2015State Public Notification received2 linked violations
July 15, 2015State Public Notification requested1 linked violation
January 30, 2015State Compliance achieved3 linked violations
July 22, 2014State Compliance achieved2 linked violations
September 3, 2013State Public Notification received1 linked violation
September 3, 2013State Compliance achieved2 linked violations
July 16, 2013State Violation/Reminder Notice1 linked violation
October 1, 2012State Compliance achieved2 linked violations
September 13, 2012State Public Notification requested2 linked violations
August 10, 2011State Compliance achieved2 linked violations
August 1, 2011State Violation/Reminder Notice2 linked violations
May 15, 2009State Compliance achieved3 linked violations
February 24, 2005State Public Notification requested10 linked violations
September 7, 2002State Public Notification requested1 linked violation
September 7, 2002State Violation/Reminder Notice3 linked violations
July 3, 2002State Compliance achieved2 linked violations
July 1, 2002State Public Notification requested2 linked violations
June 22, 2002State Public Notification requested1 linked violation
June 22, 2002State Violation/Reminder Notice1 linked violation
June 22, 2002State Violation/Reminder Notice1 linked violation

Common questions

Is SHELBY CITY OF required to publish a Consumer Confidence Report?: Yes. SHELBY CITY OF 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 SHELBY CITY OF’s next Consumer Confidence Report due?: SHELBY CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does SHELBY CITY OF have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for SHELBY CITY OF that is 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

MCDERMOTT, GARY

406-434-5222

SHELBY, MT 59474