Public water system record
Senior Canyon Mutual Water Co
Serves an area of Ventura County, CA · 800 people served
Federal records show 2 health-based violations and 3 monitoring/reporting issues for Senior Canyon Mutual Water Co in the last ten years. The most serious issue in this window was a resolved Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 3
Key facts
- Senior Canyon Mutual Water Co draws water from 1 surface water intake.
- Most recent formal enforcement: compliance order (no penalty) by California, April 2024.
- Record on file since 1980, with 4 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 248 service lines.
Check whether Senior Canyon Mutual Water Co 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 |
|---|---|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2017 | Resolved | No |
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Oct 1, 2016 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Total Coliform
OTHER
|
Oct 1, 2016 | Resolved |
Full record since 1980
EPA's records for Senior Canyon Mutual Water Co go back to 1980. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 15 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 4 |
| 1990s | 3 | 0 |
| 2000s | 0 | 7 |
| 2010 to October 18, 2016 | 1 | 4 |
| October 19, 2016 to 2019 | 1 | 1 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Revised Total Coliform Rule (acute), began October 2016, Resolved.
Show all 4 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule (acute)
Contaminant limit exceeded
|
Oct 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1996 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1995 | Resolved |
Enforcement actions
California regulators took 13 formal enforcement actions against Senior Canyon Mutual Water Co between 1995 and 2024. The most recent was a compliance order (no penalty) in April 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 29, 2024 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Apr 27, 2018 | California | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Jun 15, 2017 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Feb 28, 2017 | California | Compliance order (no penalty) | 2 violations (1 health-based): Revised Total Coliform Rule, Total Coliform |
| Jun 1, 2012 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Jan 6, 2012 | California | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Jul 26, 2010 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Jan 6, 2010 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Jan 25, 2008 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Nov 8, 2004 | California | Compliance order (no penalty) | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Sep 5, 2001 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Feb 1, 2001 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
| Apr 25, 1995 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
What the violations mean
Surface Water Treatment Rule
1 incidentThe system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Senior Canyon Mutual Water Co draws water from 1 surface water intake. It also buys water from Casitas Municipal Water Dist.
Buys water from
- Casitas Municipal Water Dist Oak View, CA
Annual water quality report
Senior Canyon Mutual Water Co 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