Public water system record
Mi Wuk Heights MWC
Serves Mi-Wuk Village, Tuolumne County, CA · 445 people served
Federal records show no health-based violations and no monitoring or reporting issues for Mi Wuk Heights MWC 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
- Mi Wuk Heights MWC draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
- Most recent enforcement action: boil water order by California, August 2002.
- Record on file since 1980, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 158 service lines.
Check whether Mi Wuk Heights MWC 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 1980
EPA's records for Mi Wuk Heights MWC go back to 1980. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 6 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 4 |
| 1990s | 1 | 2 |
| 2000s | 2 | 0 |
Most recent health-based violation before October 19, 2016: Total Coliform, began October 2004, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1998 | Resolved |
Enforcement actions
California regulators issued 1 boil water order to Mi Wuk Heights MWC in 2002. The most recent was a boil water order in August 2002.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 1, 2002 | California | Boil water order | 1 violation (1 health-based): Total Coliform |
Where the water comes from
Mi Wuk Heights MWC draws water from 3 wells (1 of them for emergency, seasonal or other part-time use). It also has an emergency connection to Mi Wuk Village Mut Wtr Co. 1 other public water system has an emergency connection to Mi Wuk Heights MWC.
Emergency or part-time connections to
- Mi Wuk Village Mut Wtr Co Mi Wuk Village, CA
Annual water quality report
Mi Wuk Heights MWC 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Mi Wuk Heights MWC for a copy.
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