Public water system record
Cuesta La Honda Guild Inc
Serves La Honda, San Mateo County, CA · 915 people served
Federal records show 4 health-based violations and 31 monitoring/reporting issues for Cuesta La Honda Guild Inc in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.
System profile
- Health-based violations, last 10 years
- 4
- Resolved
- 4
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 31
Key facts
- Cuesta La Honda Guild Inc draws water from 1 well and 3 surface water intakes (1 of them for emergency, seasonal or other part-time use).
- Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit), 2021.
- Most recent formal enforcement: compliance order (no penalty) by California, April 2021.
- Record on file since 2000, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 296 unknown out of 296 service lines.
Check whether Cuesta La Honda Guild Inc serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0672 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Oct 1, 2021 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0696 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Jul 1, 2021 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Apr 1, 2021 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.067 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Jan 1, 2021 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlordane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2018 | Resolved |
Full record since 2000
EPA's records for Cuesta La Honda Guild Inc go back to 2000. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 0 | 1 |
| 2010 to October 18, 2016 | 1 | 0 |
| October 19, 2016 to 2019 | 0 | 31 |
| 2020s | 4 | 0 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began December 2010, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2010 | Resolved |
Enforcement actions
California regulators took 3 formal enforcement actions against Cuesta La Honda Guild Inc between 2011 and 2021. The most recent was a compliance order (no penalty) in April 2021.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 19, 2021 | California | Compliance order (no penalty) | 4 violations (4 health-based): Haloacetic Acids (HAA5) |
| Mar 19, 2018 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Feb 1, 2011 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
What the violations mean
Haloacetic Acids (HAA5)
4 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Where the water comes from
Cuesta La Honda Guild Inc draws water from 1 well and 3 surface water intakes (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Cuesta La Honda Guild Inc must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.
Certified drinking water labs by state EPA guidance for private wells