Public water system record
Rancho Carrillo MWC
Serves an area of Riverside County, CA · 210 people served
Federal records show 3 health-based violations and 4 monitoring/reporting issues for Rancho Carrillo MWC in the last ten years. The most serious issue in this window was a resolved Nitrate violation.
System profile
- Health-based violations, last 10 years
- 3
- Resolved
- 3
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 4
Key facts
- Rancho Carrillo MWC draws water from 5 wells.
- Highest measured level in the last 10 years: Nitrate, 11.7 mg/L, federal limit 10 mg/L (1.2 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by California, February 2023.
- Record on file since 1980, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 84 service lines.
Check whether Rancho Carrillo MWC 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 |
|---|---|---|---|---|
|
Nitrate
Contaminant limit exceeded
Measured 11.1 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Jul 1, 2017 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 11.7 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Apr 1, 2017 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 11.7 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Jan 1, 2017 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrite
Monitoring and reporting
|
Jan 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Nitrate
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2007 | Resolved |
Full record since 1980
EPA's records for Rancho Carrillo MWC go back to 1980. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 37 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 21 |
| 1990s | 0 | 4 |
| 2000s | 0 | 9 |
| 2010 to October 18, 2016 | 2 | 3 |
| October 19, 2016 to 2019 | 3 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform (acute), began September 2014, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform (acute)
Contaminant limit exceeded
|
Sep 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2013 | Resolved |
Enforcement actions
California regulators took 5 formal enforcement actions against Rancho Carrillo MWC between 2015 and 2023. The most recent was a compliance order (no penalty) in February 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 1, 2023 | California | Compliance order (no penalty) | 1 violation: Nitrite |
| Mar 23, 2022 | California | Compliance order (no penalty) | 1 violation: Nitrite |
| May 24, 2017 | California | Compliance order (no penalty) | 4 violations (3 health-based): Nitrate |
| Apr 4, 2017 | California | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate |
| Feb 5, 2015 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
What the violations mean
Nitrate
3 incidentsNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Where the water comes from
Rancho Carrillo MWC draws water from 5 wells.
Annual water quality report
Rancho Carrillo MWC 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 Rancho Carrillo MWC 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