Public water system record
Casitas Municipal Water Dist
Serves an area of Ventura County, CA that includes San Buenaventura (Ventura), Mira Monte, Ojai and 2 more places · 11,005 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Casitas Municipal Water Dist in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Casitas Municipal Water Dist draws water from 1 well and 1 surface water intake (1 of them for emergency, seasonal or other part-time use).
- Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit), 2023.
- Most recent formal enforcement: compliance order (no penalty) by California, January 2025.
- Record on file since 1992, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 5,556 service lines.
Check whether Casitas 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
220 | Oct 1, 2023 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2022 | Resolved |
Full record since 1992
EPA's records for Casitas Municipal Water Dist go back to 1992. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 6 | 1 |
| 2020s | 1 | 2 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began November 1994, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1992 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1992 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1992 | Resolved |
Enforcement actions
California regulators took 5 formal enforcement actions against Casitas Municipal Water Dist between 1992 and 2025, filed as 6 records in EPA's data. The most recent was a compliance order (no penalty) in January 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jan 17, 2025 | California | Compliance order (no penalty) | 1 violation: Surface Water Treatment Rule |
| Dec 19, 2023 | California | Compliance order (no penalty) | 1 violation (1 health-based): Haloacetic Acids (HAA5) |
| May 5, 2022 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Jun 20, 1992 | California | Compliance order (no penalty) | 2 violations (2 health-based): Surface Water Treatment Rule |
| May 20, 1992 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
What the violations mean
Haloacetic Acids (HAA5)
1 incidentHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Where the water comes from
Casitas Municipal Water Dist draws water from 1 well and 1 surface water intake (1 of them for emergency, seasonal or other part-time use). It also buys water from Carpinteria Valley Water District and Ojai Water System. It also has emergency connections to Meiners Oaks CWD and Ventura River Water District. 9 other community water systems buy water from Casitas Municipal Water Dist. 3 other public water systems have emergency, seasonal or other part-time connections to Casitas Municipal Water Dist.
Buys water from
- Carpinteria Valley Water District Carpinteria, CA
- Ojai Water System Oak View, CA
Emergency or part-time connections to
- Meiners Oaks CWD Ojai, CA
- Ventura River Water District Ojai, CA
Community systems that buy water from it
- Carpinteria Valley Water District Carpinteria, CA
- Casitas Mutual Water Company Casitas Springs, CA
- Meiners Oaks CWD Ojai, CA
- Ojai Water System Oak View, CA
- Senior Canyon Mutual Water Co Ojai, CA
- Siete Robles Mutual Water Co Ojai, CA
- Tico Mutual Water Co Ojai, CA
- Ventura River Water District Ojai, CA
- Ventura Water Department Ventura, CA
Annual water quality report
Casitas 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.
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