Original Sherwood Valley Rancheria
PWS ID: 090605021 · Willits, 09 95490
Population Served
60
Total Violations
371
Health-Based Violations
5
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 16
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 186
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 23 | 2014 |
| Gross Alpha, Excl. Radon and U | MR | 7 | 2009 |
| Combined Uranium | MR | 6 | 2009 |
| Combined Radium (-226 and -228) | MR | 6 | 2009 |
| Lead and Copper Rule | MR | 6 | 2008 |
| Nitrate | MR | 4 | 2022 |
| Fluoride | MR | 4 | 2008 |
| Consumer Confidence Rule | Other | 4 | 2007 |
| Mercury | MR | 3 | 2008 |
| cis-1,2-Dichloroethylene | MR | 3 | 2008 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 3 | 2008 |
| Xylenes, Total | MR | 3 | 2008 |
| p-Dichlorobenzene | MR | 3 | 2008 |
| Vinyl chloride | MR | 3 | 2008 |
| 1,1-Dichloroethylene | MR | 3 | 2008 |
| trans-1,2-Dichloroethylene | MR | 3 | 2008 |
| 1,2-Dichloroethane | MR | 3 | 2008 |
| 1,1,1-Trichloroethane | MR | 3 | 2008 |
| Carbon tetrachloride | MR | 3 | 2008 |
| 1,2-Dichloropropane | MR | 3 | 2008 |
| Trichloroethylene | MR | 3 | 2008 |
| Tetrachloroethylene | MR | 3 | 2008 |
| CHLOROBENZENE | MR | 3 | 2008 |
| Benzene | MR | 3 | 2008 |
| Toluene | MR | 3 | 2008 |
| Ethylbenzene | MR | 3 | 2008 |
| Styrene | MR | 3 | 2008 |
| Coliform (TCR) | MCL | 3 | 2005 |
| LEAD AND COPPER RULE REVISIONS | RPT | 3 | 2024 |
| o-Dichlorobenzene | MR | 3 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.