Public water system record
Ventura WWD No. 8 - Simi Valley
Serves Simi Valley and Santa Susana, Ventura County, CA · 94,738 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Ventura WWD No. 8 - Simi Valley 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
- 1
Key facts
- Ventura WWD No. 8 - Simi Valley draws water from 3 wells.
- Most recent formal enforcement: compliance order (no penalty) by California, March 2023.
- Record on file since 1979, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 26,006 service lines.
Check whether Ventura WWD No. 8 - Simi Valley 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.
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, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Full record since 1979
EPA's records for Ventura WWD No. 8 - Simi Valley go back to 1979. Before October 19, 2016 they list 1 health-based violation (1 archived by EPA without a recorded fix) and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 1 | 0 |
| 2000s | 0 | 1 |
| 2010 to October 18, 2016 | 0 | 2 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Selenium, began October 1979, Archived.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Selenium
Contaminant limit exceeded
|
Oct 28, 1979 | Archived |
Enforcement actions
California regulators took 3 formal enforcement actions against Ventura WWD No. 8 - Simi Valley between 2008 and 2023. The most recent was a compliance order (no penalty) in March 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 27, 2023 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Oct 12, 2012 | California | Compliance order (no penalty) | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Dec 30, 2008 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
Where the water comes from
Ventura WWD No. 8 - Simi Valley draws water from 3 wells. It also buys water from Calleguas Municipal Water Dist.
Buys water from
- Calleguas Municipal Water Dist Thousand Oaks, CA
Annual water quality report
Ventura WWD No. 8 - Simi Valley 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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