TOYOTA PROVING GROUNDS/TECH CENTER
PWS ID: AZ0407200 · WITTMANN, Arizona 85361
Population Served
50
Total Violations
67
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Public/Private
- Connections
- 1
- County
- Maricopa
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 59
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 4 | 2013 |
| LEAD AND COPPER RULE REVISIONS | RPT | 4 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 4 | 2024 |
| Coliform (TCR) | MR | 2 | 2002 |
| Nitrate | MR | 2 | 2001 |
| TTHM | MR | 2 | 2007 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2007 |
| Arsenic | MR | 2 | 2019 |
| p-Dichlorobenzene | MR | 1 | 1998 |
| 1,2-Dichloroethane | MR | 1 | 1998 |
| 1,1,1-Trichloroethane | MR | 1 | 1998 |
| 1,2-Dichloropropane | MR | 1 | 1998 |
| Trichloroethylene | MR | 1 | 1998 |
| CHLOROBENZENE | MR | 1 | 1998 |
| Benzene | MR | 1 | 1998 |
| Toluene | MR | 1 | 1998 |
| Styrene | MR | 1 | 1998 |
| Dalapon | MR | 1 | 1998 |
| Methoxychlor | MR | 1 | 1998 |
| Toxaphene | MR | 1 | 1998 |
| Diquat | MR | 1 | 1998 |
| Di(2-ethylhexyl) adipate | MR | 1 | 1998 |
| OXAMYL | MR | 1 | 1998 |
| Simazine | MR | 1 | 1998 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 1998 |
| Picloram | MR | 1 | 1998 |
| Dinoseb | MR | 1 | 1998 |
| Hexachlorocyclopentadiene | MR | 1 | 1998 |
| Atrazine | MR | 1 | 1998 |
| LASSO | MR | 1 | 1998 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.