Is HIDDEN VALLEY OWNER LLC required to publish a Consumer Confidence Report?

Yes. HIDDEN VALLEY OWNER LLC 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 HIDDEN VALLEY OWNER LLC’s next Consumer Confidence Report due?

HIDDEN VALLEY OWNER LLC’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.

SAN DIEGO, MT · Gallatin County

HIDDEN VALLEY OWNER LLC Water System

Consumer Confidence Report status

HIDDEN VALLEY OWNER LLC 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 HIDDEN VALLEY OWNER LLC.

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): MT0000035
System type: Community Water System
Population served: 200
Service connections: 84
Ownership: privately owned
Water source: groundwater (wells)

HIDDEN VALLEY OWNER LLC is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 200 people from groundwater.

As of August 1, 2026, its federal record holds 10 entries between 1994 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 10, 8 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, inorganic chemicals, and the Lead and Copper Rule.

Violation history

Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2023 – December 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2017 – September 30, 2017
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
September 8, 2015 – November 20, 2015
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2015 – August 31, 2015
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2011 – February 14, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 2009 – January 31, 2009
Resolved
Public Education
Health-based
Lead and Copper Rule
November 4, 2005 – March 30, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2005 – September 30, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2005 – August 31, 2005
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1994 – December 31, 1994
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2023 – December 31, 2023	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
July 1, 2017 – September 30, 2017	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
September 8, 2015 – November 20, 2015	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
August 1, 2015 – August 31, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2011 – February 14, 2012	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2009 – January 31, 2009	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
November 4, 2005 – March 30, 2008	Public Education	Lead and Copper Rule	Health-based	Resolved
September 1, 2005 – September 30, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2005 – August 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Nitrate	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

February 5, 2024State Compliance achieved1 linked violation
January 24, 2024State Public Notification requested1 linked violation
January 24, 2024State Violation/Reminder Notice1 linked violation
December 29, 2017State Compliance achieved1 linked violation
October 26, 2017State Violation/Reminder Notice1 linked violation
October 26, 2017State Public Notification requested1 linked violation
November 20, 2015State Compliance achieved1 linked violation
September 28, 2015State Compliance achieved1 linked violation
September 18, 2015State Public Notification requested1 linked violation
September 18, 2015State Violation/Reminder Notice1 linked violation
September 4, 2015State Public Notification requested1 linked violation
September 4, 2015State Violation/Reminder Notice1 linked violation
September 4, 2015State Violation/Reminder Notice1 linked violation
February 14, 2012State Compliance achieved1 linked violation
February 15, 2011State Violation/Reminder Notice1 linked violation
September 25, 2009State Compliance achieved4 linked violations
February 12, 2009State Public Notification requested2 linked violations
February 12, 2009State Violation/Reminder Notice1 linked violation
January 6, 2009State Compliance achieved3 linked violations
September 9, 2008State Compliance achieved3 linked violations
August 5, 2008State Public Notification requested1 linked violation
August 5, 2008State Violation/Reminder Notice2 linked violations
August 3, 2008State Violation/Reminder Notice1 linked violation
July 31, 2008State Compliance achieved2 linked violations
March 30, 2008State Compliance achieved1 linked violation
November 1, 2007State Violation/Reminder Notice3 linked violations
February 28, 2006State Compliance achieved1 linked violation
December 13, 2005State Compliance achieved1 linked violation
December 2, 2005State Public Notification requested1 linked violation
December 2, 2005State Violation/Reminder Notice1 linked violation
September 29, 2005State Violation/Reminder Notice1 linked violation
September 29, 2005State Public Notification requested1 linked violation
April 30, 2001State Compliance achieved1 linked violation

Common questions

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

MARTINI, STEVEN

619-243-8451

SAN DIEGO, CA 92101