Public water system record
MPWD-Coulterville CSA 1
Serves Coulterville, Mariposa County, CA · 193 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for MPWD-Coulterville CSA 1 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
- MPWD-Coulterville CSA 1 draws water from 1 well.
- Most recent formal enforcement: compliance order (no penalty) by California, April 2022.
- Record on file since 1993, with 4 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 100 service lines.
Check whether MPWD-Coulterville CSA 1 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
|
Feb 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2019 | Resolved |
Full record since 1993
EPA's records for MPWD-Coulterville CSA 1 go back to 1993. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 5 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 2 |
| 2000s | 1 | 0 |
| 2010 to October 18, 2016 | 1 | 3 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2011, Resolved.
Show all 4 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 1999 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Nov 1, 1996 | Resolved |
Enforcement actions
California regulators took 5 formal enforcement actions against MPWD-Coulterville CSA 1 between 1999 and 2022. The most recent was a compliance order (no penalty) in April 2022.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 20, 2022 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Apr 17, 2019 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Aug 1, 2011 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Feb 8, 2008 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Mar 11, 1999 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
Where the water comes from
MPWD-Coulterville CSA 1 draws water from 1 well.
Annual water quality report
MPWD-Coulterville CSA 1 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 MPWD-Coulterville CSA 1 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