LOS GATOS, CA · Santa Cruz County

LAS CUMBRES MUTUAL WATER CO 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 California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID): CA4400631
System type: Community Water System
Population served: 402
Service connections: 125
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Source Water (LT2)
—
E. COLI
June 1, 2018 – June 30, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
May 1, 2018 – May 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
April 1, 2018 – April 30, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
March 1, 2018 – March 31, 2018
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
November 1, 2016 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2016 – November 30, 2016
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2016 – October 31, 2016
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
August 1, 2016 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2016 – July 31, 2016
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 2016 – June 30, 2016
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
June 1, 2016 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 2016 – April 30, 2016
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2016 – March 31, 2016
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
January 1, 2016 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2016 – January 31, 2016
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 2015 – December 31, 2015
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2015 – November 30, 2015
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2015 – October 31, 2015
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2015 – August 31, 2015
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
July 1, 2015 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2015 – July 31, 2015
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
June 1, 2015 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 2015 – June 30, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2015 – June 30, 2015
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
May 1, 2015 – February 7, 2018
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
March 1, 2015 – February 7, 2018
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
February 1, 2015 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2015 – January 31, 2015
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
December 1, 2014 – February 7, 2018
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
November 1, 2014 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2014 – September 30, 2014
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2014 – August 31, 2014
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
July 1, 2014 – February 7, 2018
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
June 1, 2014 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 2014 – May 31, 2014
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
April 1, 2014 – February 7, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 2014 – April 30, 2014
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2014 – February 28, 2014
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2013 – September 30, 2013
Resolved
Notification, Public
—
No contaminant on record
September 1, 1984 – September 30, 1984
Archived
Notification, Public
—
No contaminant on record
August 1, 1984 – August 31, 1984
Archived
Notification, Public
—
No contaminant on record
July 1, 1984 – July 31, 1984
Archived
Notification, Public
—
No contaminant on record
December 1, 1982 – December 31, 1982
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
Archived

Resolved 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
June 1, 2018 – June 30, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
May 1, 2018 – May 31, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
March 1, 2018 – March 31, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
November 1, 2016 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2016 – November 30, 2016	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
October 1, 2016 – October 31, 2016	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2016 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2016 – July 31, 2016	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 2016 – June 30, 2016	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 2016 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 2016 – April 30, 2016	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
March 1, 2016 – March 31, 2016	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2016 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2016 – January 31, 2016	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
December 1, 2015 – December 31, 2015	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2015 – November 30, 2015	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
October 1, 2015 – October 31, 2015	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2015 – August 31, 2015	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2015 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2015 – July 31, 2015	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 2015 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 2015 – June 30, 2015	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 2015 – June 30, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 2015 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
March 1, 2015 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 2015 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2015 – January 31, 2015	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
December 1, 2014 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2014 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 2014 – September 30, 2014	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2014 – August 31, 2014	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2014 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 2014 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
May 1, 2014 – May 31, 2014	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 2014 – February 7, 2018	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 2014 – April 30, 2014	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 2014 – February 28, 2014	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 2013 – September 30, 2013	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 1984 – September 30, 1984	Notification, Public	—	—	Archived
August 1, 1984 – August 31, 1984	Notification, Public	—	—	Archived
July 1, 1984 – July 31, 1984	Notification, Public	—	—	Archived
December 1, 1982 – December 31, 1982	Notification, Public	—	—	Archived
October 1, 1981 – September 30, 1982	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 30, 1980 – October 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

July 23, 2015State Violation/Reminder Notice5 linked violations
November 14, 2014State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 16, 2013State Administrative/Compliance Order without penalty issued2 linked violations
July 1, 2013State Public Notification issued5 linked violations
July 1, 2013State Administrative/Compliance Order without penalty issued7 linked violations
August 8, 2007State Violation/Reminder Notice3 linked violations
August 8, 2007State Public Notification requested2 linked violations
September 30, 2006State Compliance achieved4 linked violations
September 18, 2006State Public Notification requested1 linked violation
September 18, 2006State Violation/Reminder Notice1 linked violation
December 30, 2003State Administrative/Compliance Order without penalty issued26 linked violations

Contact

YEE, JUDY

408-395-4095

LOS GATOS, CA 95033