FELTON, CA · Santa Cruz County

OLYMPIA MUTUAL WATER COMPANY Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of April 24, 2015. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Santa Cruz County, CA.

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 California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID): CA4400581
System type: Community Water System
Population served: 155
Service connections: 51
Ownership: privately owned
Water source: groundwater (wells)

OLYMPIA MUTUAL WATER COMPANY is one of 3,951 community water systems in California in the 500 or fewer people size category, formerly serving 155 people from groundwater.

EPA's federal records list this system as inactive in 2015; the record below is historical.

As of August 1, 2026, its federal record holds 32 entries between 1981 and 2013, all of which EPA lists as closed. Nothing has been added since 2013.

Of the 32, 5 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 Surface Water Treatment Rules, the Miscellaneous Other Rules, and the Radionuclides and Revised Rad Rule.

Violation history

Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2013 – July 31, 2013
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2012 – September 30, 2012
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2012 – August 31, 2012
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 2012 – May 31, 2012
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2012 – January 31, 2012
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2011 – November 30, 2011
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2011 – August 31, 2011
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 2011 – April 30, 2011
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2011 – March 31, 2011
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 2010 – December 31, 2010
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2010 – October 31, 2010
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
September 1, 2010 – September 30, 2010
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
August 1, 2010 – August 31, 2010
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 2010 – June 30, 2010
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2009 – November 30, 2009
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2009 – September 30, 2009
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 2009 – May 31, 2009
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
November 1, 2008 – November 30, 2008
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2008 – September 30, 2008
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
August 1, 2008 – August 31, 2008
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2007 – October 31, 2007
Resolved
Failure to Filter (SWTR)
Health-based
Surface Water Treatment Rule
September 1, 2007 – April 24, 2015
Resolved
Notification, Public
—
No contaminant on record
September 1, 1984 – September 30, 1984
Archived
Notification, Public
—
No contaminant on record
July 1, 1984 – July 31, 1984
Archived
Notification, Public
—
No contaminant on record
February 1, 1984 – February 29, 1984
Archived
Notification, Public
—
No contaminant on record
January 1, 1984 – January 31, 1984
Archived
Notification, Public
—
No contaminant on record
November 1, 1983 – November 30, 1983
Archived
Notification, Public
—
No contaminant on record
October 1, 1983 – October 31, 1983
Archived
Notification, Public
—
No contaminant on record
December 1, 1982 – December 31, 1982
Archived
Notification, Public
—
No contaminant on record
November 1, 1982 – November 30, 1982
Archived
Notification, Public
—
No contaminant on record
October 1, 1982 – October 31, 1982
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
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
July 1, 2013 – July 31, 2013	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 2012 – September 30, 2012	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2012 – August 31, 2012	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
May 1, 2012 – May 31, 2012	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2012 – January 31, 2012	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2011 – November 30, 2011	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2011 – August 31, 2011	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 2011 – April 30, 2011	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
March 1, 2011 – March 31, 2011	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
December 1, 2010 – December 31, 2010	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
October 1, 2010 – October 31, 2010	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 2010 – September 30, 2010	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
August 1, 2010 – August 31, 2010	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
June 1, 2010 – June 30, 2010	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2009 – November 30, 2009	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 2009 – September 30, 2009	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
May 1, 2009 – May 31, 2009	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2008 – November 30, 2008	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
September 1, 2008 – September 30, 2008	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
August 1, 2008 – August 31, 2008	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
October 1, 2007 – October 31, 2007	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 2007 – April 24, 2015	Failure to Filter (SWTR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 1984 – September 30, 1984	Notification, Public	—	—	Archived
July 1, 1984 – July 31, 1984	Notification, Public	—	—	Archived
February 1, 1984 – February 29, 1984	Notification, Public	—	—	Archived
January 1, 1984 – January 31, 1984	Notification, Public	—	—	Archived
November 1, 1983 – November 30, 1983	Notification, Public	—	—	Archived
October 1, 1983 – October 31, 1983	Notification, Public	—	—	Archived
December 1, 1982 – December 31, 1982	Notification, Public	—	—	Archived
November 1, 1982 – November 30, 1982	Notification, Public	—	—	Archived
October 1, 1982 – October 31, 1982	Notification, Public	—	—	Archived
October 1, 1981 – September 30, 1982	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

April 10, 2016State no longer subject to Rule2 linked violations
March 1, 2016State Compliance achieved148 linked violations
March 1, 2016State no longer subject to Rule101 linked violations
April 10, 2015State Compliance achieved3 linked violations
March 1, 2015State no longer subject to Rule20 linked violations
February 18, 2015State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
December 16, 2013State Administrative/Compliance Order without penalty issued3 linked violations
November 15, 2013State Administrative/Compliance Order without penalty issued3 linked violations
September 16, 2013State Administrative/Compliance Order without penalty issued1 linked violation
August 15, 2013State Public Notification issued3 linked violations
June 15, 2006State Administrative/Compliance Order without penalty issued15 linked violations

Last known contact on file (system is inactive)

_KELLYTHORNE, JACK

831-335-4806

FELTON, CA 95018