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

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

DILLON 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.

DILLON, MT · Beaverhead County

DILLON CITY OF Water System

Consumer Confidence Report status

DILLON 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 no open violations for DILLON CITY OF.

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): MT0000201
System type: Community Water System
Population served: 4,300
Service connections: 1,920
Ownership: local government
Water source: groundwater (wells)

DILLON CITY OF serves 4,300 people from groundwater, placing it in the 3,301 to 10,000 people size category.

As of August 1, 2026, its federal record holds 6 entries between 1993 and 2012, all of which EPA lists as closed. Nothing has been added since 2012.

All 6 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 inorganic chemicals.

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2012 – May 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2011 – November 30, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2005 – November 30, 2005
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2002 – September 21, 2005
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
December 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1993 – December 31, 1993
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
May 1, 2012 – May 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2011 – November 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2005 – November 30, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2002 – September 21, 2005	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
December 1, 1995 – December 31, 1995	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Nitrate	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

June 15, 2012State Violation/Reminder Notice1 linked violation
June 15, 2012State Public Notification requested1 linked violation
June 4, 2012State Compliance achieved1 linked violation
December 20, 2011State Public Notification requested1 linked violation
December 20, 2011State Violation/Reminder Notice1 linked violation
December 5, 2011State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
December 31, 2008State Compliance achieved3 linked violations
December 26, 2005State Violation/Reminder Notice2 linked violations
September 21, 2005State Compliance achieved1 linked violation

Common questions

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

ABBEY, KRISTINA

406-683-4245

DILLON, MT 59725