VERNON VALLEY WATER SYSTEM
PWS ID: AZ0401054 · TUCSON, Arizona 85754
Population Served
54
Total Violations
101
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 18
- County
- Apache
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 82
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 22 | 2014 |
| Consumer Confidence Rule | Other | 15 | 2020 |
| Lead and Copper Rule | MR | 5 | 2021 |
| Revised Total Coliform Rule | MON | 3 | 2023 |
| Nitrate | MR | 2 | 2005 |
| Revised Total Coliform Rule | RPT | 2 | 2023 |
| Revised Total Coliform Rule | TT | 2 | 2018 |
| 1,1-Dichloroethylene | MR | 1 | 1998 |
| trans-1,2-Dichloroethylene | MR | 1 | 1998 |
| 1,2-Dichloroethane | MR | 1 | 1998 |
| 1,1,2-Trichloroethane | MR | 1 | 1998 |
| Tetrachloroethylene | MR | 1 | 1998 |
| CHLOROBENZENE | MR | 1 | 1998 |
| Benzene | MR | 1 | 1998 |
| Toluene | MR | 1 | 1998 |
| Ethylbenzene | MR | 1 | 1998 |
| Styrene | MR | 1 | 1998 |
| Endrin | MR | 1 | 1998 |
| BHC-GAMMA | MR | 1 | 1998 |
| Methoxychlor | MR | 1 | 1998 |
| Toxaphene | MR | 1 | 1998 |
| Endothall | MR | 1 | 1998 |
| Glyphosate | MR | 1 | 1998 |
| Di(2-ethylhexyl) adipate | MR | 1 | 1998 |
| OXAMYL | MR | 1 | 1998 |
| LASSO | MR | 1 | 1998 |
| 2,3,7,8-TCDD | MR | 1 | 1998 |
| Heptachlor | MR | 1 | 1998 |
| 2,4,5-TP | MR | 1 | 1998 |
| HEXACHLOROBENZENE | MR | 1 | 1998 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.