TONTO HILLS DWID
PWS ID: AZ0407076 · CAVE CREEK, Arizona 85331
Population Served
350
Total Violations
245
Health-Based Violations
7
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 150
- County
- Maricopa
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 189
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 38 | 2025 |
| Surface Water Treatment Rule | MR | 24 | 2025 |
| Coliform (TCR) | MR | 21 | 2015 |
| Lead and Copper Rule | MR | 10 | 2024 |
| Consumer Confidence Rule | Other | 8 | 2012 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2017 |
| TTHM | MR | 5 | 2017 |
| Nitrate | MR | 4 | 2004 |
| Arsenic | MR | 3 | 1992 |
| Fluoride | MR | 3 | 1992 |
| o-Dichlorobenzene | MR | 2 | 1998 |
| trans-1,2-Dichloroethylene | MR | 2 | 1998 |
| 1,1,2-Trichloroethane | MR | 2 | 1998 |
| Tetrachloroethylene | MR | 2 | 1998 |
| Toluene | MR | 2 | 1998 |
| Ethylbenzene | MR | 2 | 1998 |
| Glyphosate | MR | 2 | 1998 |
| OXAMYL | MR | 2 | 1998 |
| Coliform (TCR) | MCL | 2 | 2014 |
| Mercury | MR | 2 | 1989 |
| Fluoride | MCL | 2 | 1981 |
| CHLOROBENZENE | MR | 2 | 1998 |
| Barium | MR | 2 | 1989 |
| cis-1,2-Dichloroethylene | MR | 2 | 1998 |
| Cadmium | MR | 2 | 1989 |
| Chromium | MR | 2 | 1989 |
| Selenium | MR | 2 | 1989 |
| DICHLOROMETHANE | MR | 2 | 1998 |
| 1,2-Dichloropropane | MR | 2 | 1998 |
| Di(2-ethylhexyl) adipate | MR | 2 | 1998 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.