DEL ORO RIVER ISLAND SERV TERR #1
PWS ID: CA5400665 · CHICO, California 95927
Population Served
1,280
Total Violations
147
Health-Based Violations
118
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 388
- County
- Tulare
- School/Daycare
- No
- MCL Violations
- 118
- Monitoring Violations
- 20
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Uranium | MCL | 62 | 2024 |
| Nitrate | MCL | 33 | 2024 |
| Coliform (TCR) | MCL | 23 | 2005 |
| Nitrate | MR | 9 | 2016 |
| Lead and Copper Rule | MR | 5 | 2012 |
| Coliform (TCR) | MR | 4 | 2007 |
| Consumer Confidence Rule | Other | 3 | 2003 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1981 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.