LA HONDA, CA · San Mateo County
REDWOOD TERRACE MUTUAL 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)
- CA4100510
- System type
- Community Water System
- Population served
- 56
- Service connections
- 18
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Monitoring, Regular
—Di(2-ethylhexyl) adipate
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Diquat
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Glyphosate
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Dalapon
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—OXAMYL
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Heptachlor
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—2,4-D
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
November 1, 2002 – November 30, 2002
ResolvedNotification, Public
—No contaminant on record
September 1, 1984 – September 30, 1984
ArchivedNotification, Public
—No contaminant on record
July 1, 1984 – July 31, 1984
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedMercury
June 1, 1980 – May 31, 1982
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Diquat | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Glyphosate | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Dalapon | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | OXAMYL | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Heptachlor | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring, Regular | 2,4-D | — | Resolved |
| November 1, 2002 – November 30, 2002 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 1984 – September 30, 1984 | Notification, Public | — | — | Archived |
| July 1, 1984 – July 31, 1984 | Notification, Public | — | — | Archived |
| October 1, 1981 – September 30, 1982 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| June 1, 1980 – May 31, 1982 | Maximum Contaminant Level Violation, Single Sample | Mercury | Health-based | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- June 2, 2025State Compliance achieved1 linked violation
- May 29, 2025State Administrative/Compliance Order without penalty issued1 linked violation
- July 28, 2021State Compliance achieved2 linked violations
- February 25, 2020State Administrative/Compliance Order without penalty issued1 linked violation
- July 17, 2019State Administrative/Compliance Order without penalty issued1 linked violation
- January 25, 2019State Compliance achieved2 linked violations
- January 25, 2019State Compliance achieved2 linked violations
- January 25, 2019State Compliance achieved1 linked violation
- January 25, 2019State Compliance achieved1 linked violation
- February 5, 2010State Compliance achieved1 linked violation
- February 5, 2010State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- December 30, 2002State Compliance achieved1 linked violation
- December 30, 2002State Compliance achieved1 linked violation
- December 30, 2002State Compliance achieved1 linked violation
- December 11, 2002State Boil Water Order18 linked violations
Contact
MACMILLIAN, TIM
650-799-5366
LA HONDA, CA 94020