SAN DIEGO, MT · Gallatin County

HIDDEN VALLEY OWNER LLC Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)

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 Public Notification requested1 linked violation
October 26, 2017State Violation/Reminder Notice1 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 Violation/Reminder Notice1 linked violation
September 4, 2015State Public Notification requested1 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 Violation/Reminder Notice1 linked violation
February 12, 2009State Public Notification requested2 linked violations
January 6, 2009State Compliance achieved3 linked violations
September 9, 2008State Compliance achieved3 linked violations
August 5, 2008State Violation/Reminder Notice2 linked violations
August 5, 2008State Public Notification requested1 linked violation
August 3, 2008State Violation/Reminder Notice1 linked violation
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

Contact

MARTINI, STEVEN

619-243-8451

SAN DIEGO, CA 92101