GUATAY, CA · San Diego County

GUATAY MUTUAL BENEFIT CORPORATION 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): CA3700897
System type: Community Water System
Population served: 100
Service connections: 32
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
October 1, 2023 – December 31, 2023
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
October 1, 2023 – December 31, 2023
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
January 1, 2023 – March 31, 2023
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
July 1, 2022 – September 30, 2022
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
January 1, 2022 – March 31, 2022
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
October 1, 2021 – December 31, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
October 1, 2020 – December 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
April 1, 2019 – June 30, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
October 1, 2017 – December 31, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
April 1, 2017 – June 30, 2017
Archived
Monitoring, Regular
—
Benzene
January 1, 2016 – January 31, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
April 1, 2015 – June 30, 2015
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
October 1, 2014 – December 31, 2014
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
July 1, 2009 – September 30, 2009
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2008 – October 31, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
June 1, 2008 – June 30, 2008
Archived
Notification, Public
—
No contaminant on record
June 1, 1984 – June 30, 1984
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
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
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
October 1, 2023 – December 31, 2023	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
October 1, 2023 – December 31, 2023	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
January 1, 2023 – March 31, 2023	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
January 1, 2022 – March 31, 2022	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
October 1, 2017 – December 31, 2017	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
April 1, 2017 – June 30, 2017	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
January 1, 2016 – January 31, 2016	Monitoring, Regular	Benzene	—	Resolved
April 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
October 1, 2008 – October 31, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2008 – June 30, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Archived
June 1, 1984 – June 30, 1984	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
October 30, 1980 – October 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

March 17, 2016State Compliance achieved9 linked violations
February 5, 2015State Administrative/Compliance Order without penalty issued1 linked violation
January 1, 2015State Administrative/Compliance Order without penalty issued14 linked violations
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
September 1, 2009State Public Notification issued1 linked violation
November 13, 2008State Administrative/Compliance Order without penalty issued1 linked violation
June 25, 2008State Administrative/Compliance Order without penalty issued2 linked violations
September 6, 2004Federal Compliance achieved1 linked violation

Contact

RICHARDSON, SARA

619-627-9526

GUATAY, CA 91931