Tuolumne - Black Oak Casino
PWS ID: 090605149 · Tuolumne, 09 95379
Population Served
2,600
Total Violations
31
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Native American
- Connections
- 1
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 13
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 4 | 2024 |
| Revised Total Coliform Rule | RPT | 3 | 2022 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2017 |
| Picloram | MR | 1 | 2014 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 2004 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2017 |
| Pentachlorophenol | MR | 1 | 2014 |
| Benzo(a)pyrene | MR | 1 | 2017 |
| ETHYLENE DIBROMIDE | MR | 1 | 2017 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 2017 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 2004 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.