AJO DWID
PWS ID: AZ0410153 · AJO, Arizona 85321
Population Served
405
Total Violations
173
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 152
- County
- Pima
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 147
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 67 | 2020 |
| TTHM | MR | 19 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 19 | 2024 |
| Lead and Copper Rule | MR | 18 | 2014 |
| Coliform (TCR) | MR | 16 | 2016 |
| Revised Total Coliform Rule | MON | 7 | 2017 |
| Revised Total Coliform Rule | RPT | 5 | 2024 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1984 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.