Public water system record
Mi Wuk Village Mut Wtr Co
Serves Mi-Wuk Village and Sierra Village, Tuolumne County, CA · 2,163 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Mi Wuk Village Mut Wtr Co 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
- 2
Key facts
- Mi Wuk Village Mut Wtr Co draws water from 3 wells and 1 surface water intake.
- Most recent formal enforcement: compliance order (no penalty) by California, March 2023.
- Record on file since 2005, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 770 service lines.
Check whether Mi Wuk Village Mut Wtr 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.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2025 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
Full record since 2005
EPA's records for Mi Wuk Village Mut Wtr Co go back to 2005. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 3 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2008, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0849 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2008 | Resolved |
Enforcement actions
California regulators took 2 formal enforcement actions against Mi Wuk Village Mut Wtr Co between 2008 and 2023. The most recent was a compliance order (no penalty) in March 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 9, 2023 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Jul 21, 2008 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
Where the water comes from
Mi Wuk Village Mut Wtr Co draws water from 3 wells and 1 surface water intake. It also has emergency connections to Mi Wuk Heights MWC, Sierra Village Mutual Water Co and Tud - Upper Basin Water System. 1 other community water system buys water from Mi Wuk Village Mut Wtr Co. 2 other public water systems have emergency connections to Mi Wuk Village Mut Wtr Co.
Emergency or part-time connections to
- Mi Wuk Heights MWC Mi Wuk Village, CA
- Sierra Village Mutual Water Co Twain Harte, CA
- Tud - Upper Basin Water System Sonora, CA
Community systems that buy water from it
- Tud - Upper Basin Water System Sonora, CA
Annual water quality report
Mi Wuk Village Mut Wtr 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