Public water system record
Calleguas Municipal Water Dist
Serves an area of Ventura County, CA that includes Thousand Oaks, Simi Valley, Camarillo and 8 more places · Population served not reported
Federal records show no health-based violations and no monitoring or reporting issues for Calleguas Municipal Water Dist 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
- Calleguas Municipal Water Dist draws water from 18 wells and 2 surface water intakes (18 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by California, April 1989.
- Record on file since 1992, with 1 health-based violation before October 19, 2016.
Check whether Calleguas Municipal Water Dist 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 1992
EPA's records for Calleguas Municipal Water Dist go back to 1992. Before October 19, 2016 they list 1 health-based violation (1 resolved) and no monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began March 1992, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1992 | Resolved |
Enforcement actions
California regulators took 1 formal enforcement action against Calleguas Municipal Water Dist in 1989. The most recent was a compliance order (no penalty) in April 1989.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 28, 1989 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
Where the water comes from
Calleguas Municipal Water Dist draws water from 18 wells and 2 surface water intakes (18 of them for emergency, seasonal or other part-time use). It also buys water from Metropolitan Water Dist. of So. Cal. 20 other community water systems buy water from Calleguas Municipal Water Dist.
Buys water from
- Metropolitan Water Dist. of So. Cal. La Verne, CA
Community systems that buy water from it
- Brandeis Bardin Institute Simi Valley, CA
- Cal American WC - Las Posas Estates Rosemead, CA
- Cal American Water Co Rosemead, CA
- California Water Service Co - Westlake San Jose, CA
- Camarillo Water Dept Camarillo, CA
- Camrosa Water District Camarillo, CA
- City of Thousand Oaks Water Department Thousand Oaks, CA
- Crestview Mutual Water Co Camarillo, CA
- Golden State Water Company - Simi Valley Rancho Cordova, CA
- Oxnard Water Dept Oxnard, CA
- Pleasant Valley Mutual Water Co Camarillo, CA
- Port Hueneme City Water Dept Port Hueneme, CA
- Port Hueneme Water Agency Port Hueneme, CA
- Solano Verde Mutual Water Co Camarillo, CA
- Triunfo Water & Sanitation District Westlake Village, CA
- Ventura CWWD No. 1 - Moorpark Moorpark, CA
- Ventura CWWD No. 17 - Bell Canyon Moorpark, CA
- Ventura CWWD No. 19 - Somis Moorpark, CA
- Ventura CWWD No. 38 - Lake Sherwood Moorpark, CA
- Ventura WWD No. 8 - Simi Valley Simi Valley, CA
Annual water quality report
Calleguas Municipal Water Dist 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.
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