Public water system record
Sterling Mutual Water Company
Serves El Monte, Los Angeles County, CA · 198 people served
Federal records show 1 health-based violation and 4 monitoring/reporting issues for Sterling Mutual Water Company in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 4
Key facts
- Sterling Mutual Water Company draws water from 2 wells.
- Most recent formal enforcement: compliance order with a penalty by California, October 2023.
- Record on file since 2011, with 0 health-based violations before October 19, 2016.
Check whether Sterling Mutual Water Company 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 27, 2023 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2022 |
Active
Enforcement action in place
|
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2017 | Resolved |
Full record since 2011
EPA's records for Sterling Mutual Water Company go back to 2011. Before October 19, 2016 they list no health-based violations and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2010 to October 18, 2016 | 0 | 4 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 3 |
Enforcement actions
California regulators took 5 formal enforcement actions against Sterling Mutual Water Company between 2011 and 2023. The most recent was a compliance order with a penalty in October 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 27, 2023 | California | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Oct 28, 2022 | California | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Apr 23, 2012 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Feb 28, 2012 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Dec 15, 2011 | California | Compliance order (no penalty) | 2 violations: Total Coliform |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Sterling Mutual Water Company draws water from 2 wells.
Annual water quality report
Sterling Mutual Water Company 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 Sterling Mutual Water Company 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