SAN MARCOS, CA · San Diego County

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

System facts

System ID (PWSID): CA3700291
System type: Community Water System
Population served: 96
Service connections: 55
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Fluoride
July 1, 2024 – September 30, 2024
Archived
Monitoring, Regular
—
Fluoride
April 1, 2024 – June 30, 2024
Archived
Monitoring, Regular
—
Fluoride
February 1, 2024 – February 29, 2024
Archived
Monitoring, Regular
—
Fluoride
October 1, 2023 – December 31, 2023
Archived
Monitoring, Regular
—
Fluoride
October 1, 2023 – December 31, 2023
Archived
Monitoring, Regular
—
Fluoride
July 1, 2023 – September 30, 2023
Archived
Monitoring, Regular
—
Fluoride
July 1, 2023 – September 30, 2023
Archived
Monitoring, Regular
—
Fluoride
April 1, 2023 – June 30, 2023
Archived
Monitoring, Regular
—
Fluoride
January 1, 2023 – January 31, 2023
Archived
Monitoring, Regular
—
Nitrate
January 1, 2023 – January 31, 2023
Archived
Monitoring, Regular
—
Fluoride
January 1, 2023 – March 31, 2023
Archived
Monitoring, Regular
—
Fluoride
January 1, 2023 – March 31, 2023
Archived
Monitoring, Regular
—
Fluoride
October 1, 2022 – December 31, 2022
Archived
Monitoring, Regular
—
Fluoride
July 1, 2022 – September 30, 2022
Archived
Monitoring, Regular
—
Fluoride
April 1, 2022 – June 30, 2022
Archived
Monitoring, Regular
—
Fluoride
January 1, 2022 – March 31, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
October 1, 2016 – December 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
January 1, 2015 – March 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
March 1, 2014 – March 31, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
November 1, 2013 – November 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
September 1, 2013 – September 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
June 1, 2013 – June 30, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2008 – November 30, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2008 – September 30, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2007 – October 31, 2007
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
December 4, 1989 – December 3, 1990
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

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

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2024 – September 30, 2024	Monitoring, Regular	Fluoride	—	Archived
April 1, 2024 – June 30, 2024	Monitoring, Regular	Fluoride	—	Archived
February 1, 2024 – February 29, 2024	Monitoring, Regular	Fluoride	—	Archived
October 1, 2023 – December 31, 2023	Monitoring, Regular	Fluoride	—	Archived
October 1, 2023 – December 31, 2023	Monitoring, Regular	Fluoride	—	Archived
July 1, 2023 – September 30, 2023	Monitoring, Regular	Fluoride	—	Archived
July 1, 2023 – September 30, 2023	Monitoring, Regular	Fluoride	—	Archived
April 1, 2023 – June 30, 2023	Monitoring, Regular	Fluoride	—	Archived
January 1, 2023 – January 31, 2023	Monitoring, Regular	Fluoride	—	Archived
January 1, 2023 – January 31, 2023	Monitoring, Regular	Nitrate	—	Archived
January 1, 2023 – March 31, 2023	Monitoring, Regular	Fluoride	—	Archived
January 1, 2023 – March 31, 2023	Monitoring, Regular	Fluoride	—	Archived
October 1, 2022 – December 31, 2022	Monitoring, Regular	Fluoride	—	Archived
July 1, 2022 – September 30, 2022	Monitoring, Regular	Fluoride	—	Archived
April 1, 2022 – June 30, 2022	Monitoring, Regular	Fluoride	—	Archived
January 1, 2022 – March 31, 2022	Monitoring, Regular	Fluoride	—	Archived
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
March 1, 2014 – March 31, 2014	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
November 1, 2013 – November 30, 2013	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
September 1, 2013 – September 30, 2013	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
June 1, 2013 – June 30, 2013	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
November 1, 2008 – November 30, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2008 – September 30, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2007 – October 31, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 4, 1989 – December 3, 1990	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	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

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

Enforcement actions

June 12, 2024State Administrative/Compliance Order without penalty issued5 linked violations
January 11, 2018State Compliance achieved28 linked violations
February 5, 2015State Administrative/Compliance Order without penalty issued1 linked violation
November 14, 2014State Administrative/Compliance Order without penalty issued1 linked violation
September 30, 2014State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
June 30, 2014State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
March 28, 2014State Administrative/Compliance Order without penalty issued1 linked violation
November 20, 2013State Administrative/Compliance Order without penalty issued1 linked violation
September 30, 2013State Administrative/Compliance Order without penalty issued2 linked violations
October 13, 2008State Administrative/Compliance Order without penalty issued1 linked violation
July 9, 2008State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record

Contact

HEARN, KRISTI

760-809-6964

SAN MARCOS, CA 92078