WOODLAND, CA · Yolo County

WESTUCKY WATER ASSOC Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of March 4, 2021. 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 Yolo 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): CA5700649
System type: Community Water System
Population served: 33
Service connections: 15
Ownership: privately owned
Water source: groundwater (wells)

WESTUCKY WATER ASSOC is one of 3,951 community water systems in California in the 500 or fewer people size category, formerly serving 33 people from groundwater.

EPA's federal records list this system as inactive in 2021; the record below is historical.

As of August 1, 2026, its federal record holds 7 entries between 1980 and 2016, all of which EPA lists as closed. Nothing has been added since 2016.

Of the 7, 3 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 Miscellaneous Other Rules, and the Radionuclides and Revised Rad Rule.

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2016 – May 21, 2017
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2014 – September 30, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2008 – June 6, 2008
Resolved
Notification, Public
—
No contaminant on record
July 1, 1984 – July 31, 1984
Archived
Notification, Public
—
No contaminant on record
March 1, 1984 – March 31, 1984
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
October 1, 2016 – May 21, 2017	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
September 1, 2014 – September 30, 2014	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 2008 – June 6, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 1984 – July 31, 1984	Notification, Public	—	—	Archived
March 1, 1984 – March 31, 1984	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

January 8, 2020State Compliance achieved2 linked violations
February 5, 2018State Administrative/Compliance Order without penalty issued6 linked violations
May 21, 2017State Compliance achieved6 linked violations
May 1, 2015State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
February 5, 2015State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 14, 2014State Violation/Reminder Notice1 linked violation
November 14, 2014State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 14, 2014State Public Notification received1 linked violation
June 27, 2014State Administrative/Compliance Order without penalty issued1 linked violation
October 1, 2013State Public Notification requested2 linked violations
December 30, 2011State Compliance achieved1 linked violation
December 12, 2011State Public Notification requested3 linked violations
December 8, 2011State Violation/Reminder Notice1 linked violation
July 30, 2010State Compliance achieved3 linked violations
June 17, 2010State Public Notification requested19 linked violations
May 5, 2009State Public Notification requested9 linked violations
September 5, 2008State Compliance achieved2 linked violations
July 25, 2008State Technical Assistance Visit26 linked violations
June 30, 2008State Compliance achieved3 linked violations
May 16, 2008State Technical Assistance Visit3 linked violations
September 1, 2007State Site Visit for enforcement purposes3 linked violations
September 1, 2007State Violation/Reminder Notice1 linked violation
September 1, 2007State Public Notification requested1 linked violation
October 31, 2006State Compliance achieved2 linked violations
November 18, 2003State Public Notification requested3 linked violations
October 28, 2003State Formal Notice of Violation issued1 linked violation
September 23, 2003State Compliance achieved2 linked violations
August 15, 2003State Public Notification requested3 linked violations
October 17, 2002State Public Notification requested5 linked violations

Last known contact on file (system is inactive)

_MADUENO, ROMELIA

530-666-1178

WOODLAND, CA 95695