Public water system record
Columbia Mobile Home Park
Serves Columbia, Tuolumne County, CA · 89 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Columbia Mobile Home Park 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
- Columbia Mobile Home Park draws water from 1 well.
- Most recent formal enforcement: compliance order (no penalty) by California, March 2023.
- Record on file since 1980, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 65 service lines.
Check whether Columbia Mobile Home Park 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
|
Apr 1, 2025 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
Full record since 1980
EPA's records for Columbia Mobile Home Park go back to 1980. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 9 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 3 |
| 1990s | 0 | 1 |
| 2010 to October 18, 2016 | 1 | 5 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Stage 1 Disinfection Byproducts Rule, began September 2013, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Sep 1, 2013 | Resolved |
Enforcement actions
California regulators took 2 formal enforcement actions against Columbia Mobile Home Park between 2013 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 |
| Sep 12, 2013 | California | Compliance order (no penalty) | 1 violation (1 health-based): Stage 1 Disinfection Byproducts Rule |
Where the water comes from
Columbia Mobile Home Park draws water from 1 well. It also has an emergency connection to Tud - Columbia Water System.
Emergency or part-time connections to
- Tud - Columbia Water System Sonora, CA
Annual water quality report
Columbia Mobile Home Park 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 Columbia Mobile Home Park 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