Is GUATAY MUTUAL BENEFIT CORPORATION required to publish a Consumer Confidence Report?

Yes. GUATAY MUTUAL BENEFIT CORPORATION is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is GUATAY MUTUAL BENEFIT CORPORATION’s next Consumer Confidence Report due?

GUATAY MUTUAL BENEFIT CORPORATION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

GUATAY, CA · San Diego County

GUATAY MUTUAL BENEFIT CORPORATION Water System

Consumer Confidence Report status

GUATAY MUTUAL BENEFIT CORPORATION must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 1 item for GUATAY MUTUAL BENEFIT CORPORATION that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

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

GUATAY MUTUAL BENEFIT CORPORATION is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 100 people from groundwater.

As of August 1, 2026, its federal record holds 28 entries between 1980 and 2024, of which 1 remains open; none are health-based.

Of the 28, 17 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 Stage 2 Disinfectants and Disinfection Byproducts Rule, the Radionuclides and Revised Rad Rule, and the Total Coliform Rules.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2024 – September 30, 2024
Archived
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2023 – December 31, 2023
Archived
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2023 – September 30, 2023
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2023 – September 30, 2023
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2023 – June 30, 2023
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2022 – September 30, 2022
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Combined Uranium
July 1, 2022 – September 30, 2022
Archived
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2022 – June 30, 2022
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2022 – March 31, 2022
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2021
Addressed
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2021 – September 30, 2021
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2021 – June 30, 2021
Archived
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2020 – December 31, 2020
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2020 – December 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
April 1, 2020 – June 30, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
April 1, 2017 – June 30, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
July 1, 2016 – September 30, 2016
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
January 1, 2015 – March 31, 2015
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)Addressed corrective action reported, pending final confirmationResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2023 – December 31, 2023	Monitoring and Reporting (DBP)	TTHM	—	Archived
July 1, 2023 – September 30, 2023	Monitoring and Reporting (DBP)	TTHM	—	Archived
July 1, 2023 – September 30, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
April 1, 2023 – June 30, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
July 1, 2022 – September 30, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Single Sample	Combined Uranium	Health-based	Archived
April 1, 2022 – June 30, 2022	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2022 – March 31, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
October 1, 2021	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Addressed
July 1, 2021 – September 30, 2021	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
April 1, 2021 – June 30, 2021	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
October 1, 2020 – December 31, 2020	Monitoring and Reporting (DBP)	TTHM	—	Archived
October 1, 2020 – December 31, 2020	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
April 1, 2020 – June 30, 2020	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
July 1, 2016 – September 30, 2016	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
January 1, 2015 – March 31, 2015	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)Addressed corrective action reported, pending final confirmationResolved addressed and confirmed by the state

Enforcement actions

August 2, 2024State Administrative/Compliance Order with penalty issued9 linked violations
September 19, 2018State Administrative/Compliance Order with penalty issued14 linked violations
June 30, 2017State Administrative/Compliance Order without penalty issued17 linked violations
January 26, 2016State Administrative/Compliance Order without penalty issued7 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
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

Common questions

Is GUATAY MUTUAL BENEFIT CORPORATION required to publish a Consumer Confidence Report?: Yes. GUATAY MUTUAL BENEFIT CORPORATION is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is GUATAY MUTUAL BENEFIT CORPORATION’s next Consumer Confidence Report due?: GUATAY MUTUAL BENEFIT CORPORATION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does GUATAY MUTUAL BENEFIT CORPORATION have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for GUATAY MUTUAL BENEFIT CORPORATION that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

RICHARDSON, SARA

619-627-9526

GUATAY, CA 91931