Public water system record
Peppermint Creek MHP
Serves an area of Tuolumne County, CA · 280 people served
Federal records show 1 health-based violation and 7 monitoring/reporting issues for Peppermint Creek MHP in the last ten years. The most serious issue in this window was a Haloacetic Acids (HAA5) violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 7
Key facts
- Peppermint Creek MHP draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.066 mg/L, federal limit 0.06 mg/L (1.1 times the limit), 2025.
- Most recent formal enforcement: compliance order (no penalty) by California, March 2023.
- Record on file since 1980, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 100 service lines.
Check whether Peppermint Creek MHP 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 0.066 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2019 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 1980
EPA's records for Peppermint Creek MHP go back to 1980. Before October 19, 2016 they list 6 health-based violations (6 archived by EPA without a recorded fix) and 6 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 6 | 6 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 1 | 5 |
Most recent health-based violation before October 19, 2016: Arsenic, began February 1987, Archived.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
|
Feb 20, 1987 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Feb 11, 1987 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Jan 29, 1987 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Dec 22, 1986 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Nov 6, 1986 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Sep 16, 1986 | Archived |
Enforcement actions
California regulators took 5 formal enforcement actions against Peppermint Creek MHP between 2018 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 |
| Mar 24, 2022 | California | Compliance order (no penalty) | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Jan 10, 2022 | California | Compliance order (no penalty) | 2 violations: Consumer Confidence Rule |
| Jun 12, 2019 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Mar 27, 2018 | California | Compliance order (no penalty) | 1 violation: Nitrate |
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
Peppermint Creek MHP draws water from 1 surface water intake.
Annual water quality report
Peppermint Creek MHP 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 Peppermint Creek MHP 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