Public water system record
Alpine Acres Mutual Water Co
Serves Mono Vista, Tuolumne County, CA · 195 people served
Federal records show 1 health-based violation and 4 monitoring/reporting issues for Alpine Acres Mutual Water Co in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 4
Key facts
- Alpine Acres Mutual Water Co draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by California, February 2025.
- Record on file since 1980, with 0 health-based violations before October 19, 2016.
Check whether Alpine Acres Mutual Water 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
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 |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
Full record since 1980
EPA's records for Alpine Acres Mutual Water Co go back to 1980. Before October 19, 2016 they list no health-based violations and 8 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 6 |
| 1990s | 0 | 1 |
| 2000s | 0 | 1 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 3 |
Enforcement actions
California regulators took 2 formal enforcement actions against Alpine Acres Mutual Water Co between 2020 and 2025. The most recent was a compliance order (no penalty) in February 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 6, 2025 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Mar 10, 2020 | California | Compliance order (no penalty) | 1 violation: Nitrate |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Alpine Acres Mutual Water Co draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Alpine Acres Mutual Water 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.
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 Alpine Acres Mutual Water Co 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