SAN DIEGO, CA · San Diego County

BUTTERFIELD RANCH Water System

Current status

1 open health-based violation on record as of July 4, 2026, alongside 1 other open item(s). See the violation history below for contaminant and status details.

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): CA3701184
System type: Community Water System
Population served: 353
Service connections: 308
Ownership: privately owned
Water source: groundwater (wells)

Violation history

LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2023 – September 24, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2023 – March 31, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2023 – February 28, 2023
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
June 1, 2022 – September 26, 2022
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2008 – February 29, 2008
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
December 1, 2007 – July 7, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2007 – January 31, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2005 – April 30, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2005 – March 31, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2005 – February 28, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
June 24, 1988 – June 23, 1989
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
October 11, 1984 – October 10, 1985
Archived
Notification, Public
—
No contaminant on record
September 1, 1984 – September 30, 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
Monitoring, Check/Repeat/Confirmation
—
Fluoride
June 1, 1980 – May 31, 1982
Archived

Unaddressed no corrective action on record yetResolved 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 17, 2024	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Unaddressed
October 1, 2023 – September 24, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
March 1, 2023 – March 31, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
February 1, 2023 – February 28, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
June 1, 2022 – September 26, 2022	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
February 1, 2008 – February 29, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 2007 – July 7, 2014	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2007 – January 31, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2005 – April 30, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2005 – March 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
February 1, 2005 – February 28, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 2004 – December 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 24, 1988 – June 23, 1989	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
October 11, 1984 – October 10, 1985	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived
September 1, 1984 – September 30, 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
June 1, 1980 – May 31, 1982	Monitoring, Check/Repeat/Confirmation	Fluoride	—	Archived

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

January 16, 2024State Compliance achieved5 linked violations
December 27, 2023State Administrative/Compliance Order without penalty issued1 linked violation
June 21, 2023State Administrative/Compliance Order without penalty issued4 linked violations
September 26, 2022State Compliance achieved7 linked violations
July 7, 2014State Compliance achieved2 linked violations
October 27, 2011State Compliance achieved4 linked violations
September 20, 2011State Administrative/Compliance Order without penalty issued1 linked violation
December 3, 2008State Compliance achieved1 linked violation
September 3, 2008State Administrative/Compliance Order without penalty issued1 linked violation
March 18, 2008State Administrative/Compliance Order without penalty issued1 linked violation
December 11, 2007State Administrative/Compliance Order without penalty issued1 linked violation
February 28, 2007State Compliance achieved4 linked violations
December 20, 2005State Compliance achieved1 linked violation
August 15, 2005State Administrative/Compliance Order without penalty issued2 linked violations
July 27, 2005State Administrative/Compliance Order without penalty issued1 linked violation
May 16, 2005State Administrative/Compliance Order without penalty issued1 linked violation
March 18, 2005State Administrative/Compliance Order without penalty issued1 linked violation
January 31, 2005State Compliance achieved1 linked violation

Contact

PHILBIN, MATT

619-694-9253

SAN DIEGO, CA 92109