LA HONDA, CA · San Mateo County
CUESTA LA HONDA GUILD INC 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)
- CA4110012
- System type
- Community Water System
- Population served
- 915
- Service connections
- 299
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Maximum Contaminant Level Violation, Average
Health-basedTotal Haloacetic Acids (HAA5)
October 1, 2021 – December 31, 2021
ResolvedMonitoring, Regular
—Methoxychlor
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—Dalapon
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—Endothall
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—OXAMYL
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—Picloram
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—Atrazine
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—2,4-D
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—Pentachlorophenol
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
January 1, 2019 – December 31, 2021
ResolvedMonitoring, Regular
—Chlordane
January 1, 2019 – December 31, 2021
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2021 – December 31, 2021 | Maximum Contaminant Level Violation, Average | Total Haloacetic Acids (HAA5) | Health-based | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Methoxychlor | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Dalapon | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Endothall | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | OXAMYL | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Picloram | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | 2,4-D | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| January 1, 2019 – December 31, 2021 | Monitoring, Regular | Chlordane | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- April 4, 2023State Compliance achieved7 linked violations
- January 3, 2023State Compliance achieved31 linked violations
- December 15, 2022State Formal Notice of Violation issued32 linked violations
- April 19, 2021State Administrative/Compliance Order without penalty issued7 linked violations
Contact
MAHONEY, TERRY
650-747-9766
LA HONDA, CA 94020