Public water system record
Marchi Central Farm
Serves an area of San Mateo County, CA · 50 people served
Federal records show 1 health-based violation and 5 monitoring/reporting issues for Marchi Central Farm in the last ten years. The most serious issue in this window was a resolved Antimony, Total violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 5
Key facts
- Marchi Central Farm draws water from 1 well.
- Highest measured level in the last 10 years: Antimony, Total, 0.007 mg/L, federal limit 0.006 mg/L (1.2 times the limit), 2024.
- Most recent formal enforcement: compliance order (no penalty) by California, April 2024.
- Record on file since 1993, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 13 service lines.
Check whether Marchi Central Farm 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 |
|---|---|---|---|---|
|
Antimony, Total
Contaminant limit exceeded
Measured 0.007 mg/L, federal limit 0.006 mg/L (1.2 times the limit)
|
330 | Jan 1, 2024 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
E. coli
Monitoring and reporting
|
Nov 15, 2023 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Antimony, Total
OTHER
|
Jan 1, 2021 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Sep 1, 2003 | Resolved |
Full record since 1993
EPA's records for Marchi Central Farm go back to 1993. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 6 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 3 |
| 2000s | 1 | 3 |
| 2020s | 1 | 4 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 2008, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2008 | Resolved |
Enforcement actions
California regulators took 6 formal enforcement actions against Marchi Central Farm between 2002 and 2024. The most recent was a compliance order (no penalty) in April 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 9, 2024 | California | Compliance order (no penalty) | 1 violation (1 health-based): Antimony, Total |
| Nov 30, 2023 | California | Compliance order (no penalty) | 1 violation: E. coli |
| Aug 22, 2023 | California | Compliance order (no penalty) | 1 violation: Antimony, Total |
| Sep 16, 2021 | California | Compliance order (no penalty) | 2 violations: Antimony, Total |
| Dec 30, 2003 | California | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
| Jun 28, 2002 | California | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
What the violations mean
Antimony, Total
1 incidentTest results for Antimony, Total were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Marchi Central Farm draws water from 1 well.
Annual water quality report
Marchi Central Farm 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.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Marchi Central Farm for a copy.
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