Public water system record
Tud - Sonora/Jamestown Water System
Serves Sonora, Jamestown and East Sonora, Tuolumne County, CA · 11,054 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Tud - Sonora/Jamestown 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 - Sonora/Jamestown Water System draws water from 6 wells and 1 surface water intake (4 of them for emergency, seasonal or other part-time use).
- Record on file since 1980, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 5,092 service lines.
Check whether Tud - Sonora/Jamestown 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 1980
EPA's records for Tud - Sonora/Jamestown Water System go back to 1980. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 1 |
| 1990s | 2 | 0 |
| 2000s | 0 | 2 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began March 1995, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1995 | Resolved |
Where the water comes from
Tud - Sonora/Jamestown Water System draws water from 6 wells and 1 surface water intake (4 of them for emergency, seasonal or other part-time use). 1 other community water system buys water from Tud - Sonora/Jamestown Water System. 4 other public water systems have emergency connections to Tud - Sonora/Jamestown Water System.
Community systems that buy water from it
- Sonora Water Resources, Inc Claremont, CA
Annual water quality report
Tud - Sonora/Jamestown 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.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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