Public water system record
Tud - Columbia Water System
Serves Columbia, Tuolumne County, CA · 5,463 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Tud - Columbia Water System 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
- 1
Key facts
- Tud - Columbia Water System draws water from 2 surface water intakes.
- Most recent formal enforcement: compliance order (no penalty) by California, March 2007.
- Record on file since 2007, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,913 service lines.
Check whether Tud - Columbia Water System 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 |
Full record since 2007
EPA's records for Tud - Columbia Water System go back to 2007. Before October 19, 2016 they list 1 health-based violation (1 resolved) and no monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 0 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began February 2007, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Feb 1, 2007 | Resolved |
Enforcement actions
California regulators took 1 formal enforcement action against Tud - Columbia Water System in 2007. The most recent was a compliance order (no penalty) in March 2007.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 16, 2007 | California | Compliance order (no penalty) | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
Where the water comes from
Tud - Columbia Water System draws water from 2 surface water intakes. 2 other public water systems have emergency connections to Tud - Columbia Water System.
Annual water quality report
Tud - Columbia Water System 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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