Public water system record
Mariana Ranchos CWD
Serves an area of San Bernardino County, CA · 1,502 people served
Federal records show no health-based violations and no monitoring or reporting issues for Mariana Ranchos CWD in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Mariana Ranchos CWD draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by California, September 2015.
- Record on file since 1994, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 492 service lines.
Check whether Mariana Ranchos CWD 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.
None since October 2016, and no monitoring or reporting violations either.
Full record since 1994
EPA's records for Mariana Ranchos CWD go back to 1994. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 5 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 1 |
| 2000s | 3 | 3 |
| 2010 to October 18, 2016 | 2 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2015, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1994 | Resolved |
Enforcement actions
California regulators took 3 formal enforcement actions against Mariana Ranchos CWD between 2009 and 2015. The most recent was a compliance order (no penalty) in September 2015.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 9, 2015 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Jun 8, 2010 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Jan 20, 2009 | California | Compliance order (no penalty) | 3 violations (1 health-based): Total Coliform |
Where the water comes from
Mariana Ranchos CWD draws water from 2 wells. 1 other community water system buys water from Mariana Ranchos CWD.
Community systems that buy water from it
- Rancheritos #2 Apple Valley, CA
Annual water quality report
Mariana Ranchos CWD 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