Public water system record
Mineral Mountain Mutual Water
Serves an area of Calaveras County, CA · 67 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Mineral Mountain Mutual Water 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
- 2
Key facts
- Mineral Mountain Mutual Water draws water from 4 wells.
- Most recent enforcement action: boil water order by California, February 2015.
- Record on file since 1993, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 12 unknown out of 30 service lines.
Check whether Mineral Mountain Mutual Water 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 |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Jul 2, 2025 | Active |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
Full record since 1993
EPA's records for Mineral Mountain Mutual Water go back to 1993. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 14 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2000s | 2 | 12 |
| 2010 to October 18, 2016 | 1 | 1 |
| 2020s | 1 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began November 2014, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2007 | Resolved |
Enforcement actions
California regulators issued 1 boil water order to Mineral Mountain Mutual Water in 2015. The most recent was a boil water order in February 2015.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 5, 2015 | California | Boil water order | 1 violation (1 health-based): Total Coliform |
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
Mineral Mountain Mutual Water draws water from 4 wells.
Annual water quality report
Mineral Mountain Mutual Water 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 Mineral Mountain Mutual Water 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