Public water system record
Marquez Rental
Serves an area of Madera County, CA · 50 people served
Federal records show 4 health-based violations and 2 monitoring/reporting issues for Marquez Rental in the last ten years. The most serious issue in this window was a Arsenic violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 4
- Resolved
- 1
- Unresolved
- 0
- Archived by EPA
- 3
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Marquez Rental draws water from 1 well.
- Highest measured level in the last 10 years: Arsenic, 0.0115 mg/L, federal limit 0.01 mg/L (1.2 times the limit), 2024.
- Most recent formal enforcement: compliance order (no penalty) by California, December 2025.
- Record on file since 1993, with 11 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 4 service lines.
Check whether Marquez Rental 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 |
|---|---|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0113 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0115 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
330 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Combined Uranium
Contaminant limit exceeded
|
340 | Jan 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2025 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
Full record since 1993
EPA's records for Marquez Rental go back to 1993. Before October 19, 2016 they list 11 health-based violations (11 resolved) and 18 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 2 |
| 2000s | 1 | 6 |
| 2010 to October 18, 2016 | 10 | 10 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 3 | 1 |
Most recent health-based violation before October 19, 2016: Combined Uranium, began January 2016, Resolved.
Show all 11 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2016 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2014 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2013 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Oct 1, 2011 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Sep 1, 2011 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Apr 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2011 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2010 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
|
Jan 1, 2007 | Resolved |
Enforcement actions
California regulators took 3 formal enforcement actions against Marquez Rental between 2014 and 2025. The most recent was a compliance order (no penalty) in December 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 4, 2025 | California | Compliance order (no penalty) | 3 violations (3 health-based): Arsenic |
| Apr 2, 2025 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Aug 12, 2014 | California | Compliance order (no penalty) | 9 violations (9 health-based): Combined Uranium |
What the violations mean
Arsenic
3 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Combined Uranium
1 incidentTest results for Combined Uranium were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Marquez Rental draws water from 1 well.
Annual water quality report
Marquez Rental 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 Marquez Rental 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