Big Sandy Rancheria
PWS ID: 090600121 · Auberry, 09 93602
Population Served
408
Total Violations
425
Health-Based Violations
56
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 62
- School/Daycare
- No
- MCL Violations
- 56
- Monitoring Violations
- 114
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Uranium | MCL | 47 | 2025 |
| Coliform (TCR) | MR | 19 | 2014 |
| Coliform (TCR) | MCL | 9 | 2013 |
| Consumer Confidence Rule | Other | 6 | 2006 |
| Public Notice | Other | 4 | 2025 |
| Nitrate | MR | 3 | 2017 |
| Chlorine | MR | 3 | 2024 |
| E. COLI | MR | 3 | 2023 |
| Lead and Copper Rule | MR | 3 | 1999 |
| Mercury | MR | 2 | 2017 |
| Carbofuran | MR | 2 | 2017 |
| LASSO | MR | 2 | 2017 |
| 2,4-D | MR | 2 | 2017 |
| 2,4,5-TP | MR | 2 | 2017 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 2017 |
| Combined Uranium | MR | 2 | 2023 |
| Combined Radium (-226 and -228) | MR | 2 | 2017 |
| Radium-226 | MR | 2 | 2001 |
| Pentachlorophenol | MR | 2 | 2017 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2023 |
| Nitrite | MR | 2 | 2017 |
| TTHM | MR | 2 | 2023 |
| Arsenic | MR | 1 | 2017 |
| Barium | MR | 1 | 2017 |
| Cadmium | MR | 1 | 2017 |
| Chromium | MR | 1 | 2017 |
| Selenium | MR | 1 | 2017 |
| Beryllium, Total | MR | 1 | 2017 |
| Thallium, Total | MR | 1 | 2017 |
| Endrin | MR | 1 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.