Public Water Partners

LA HONDA, CA · San Mateo County

CUESTA LA HONDA GUILD INC Water System

Consumer Confidence Report status

CUESTA LA HONDA GUILD INC 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 no open violations for CUESTA LA HONDA GUILD INC.

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)
CA4110012
System type
Community Water System
Population served
915
Service connections
299
Ownership
privately owned
Water source
surface water (rivers, lakes, or reservoirs)

CUESTA LA HONDA GUILD INC is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 915 people from surface water.

As of August 1, 2026, its federal record holds 19 entries between 2010 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.

Of the 19, 16 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 synthetic organic chemicals, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Surface Water Treatment Rules.

Violation history

  • Maximum Contaminant Level Violation, Average

    Health-based

    Total Haloacetic Acids (HAA5)

    October 1, 2021 – December 31, 2021

    Resolved

  • Maximum Contaminant Level Violation, Average

    Health-based

    Total Haloacetic Acids (HAA5)

    April 1, 2021 – June 30, 2021

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) phthalate

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    ETHYLENE DIBROMIDE

    January 1, 2019 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 2019 – December 31, 2021

    Resolved

  • Treatment Technique (SWTR and GWR)

    Health-based

    Surface Water Treatment Rule

    December 1, 2010 – December 31, 2010

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is CUESTA LA HONDA GUILD INC required to publish a Consumer Confidence Report?

Yes. CUESTA LA HONDA GUILD INC 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 CUESTA LA HONDA GUILD INC’s next Consumer Confidence Report due?

CUESTA LA HONDA GUILD INC’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does CUESTA LA HONDA GUILD INC have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for CUESTA LA HONDA GUILD INC.

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

MAHONEY, TERRY

650-747-9766

LA HONDA, CA 94020