SONOITA MERCANTILE WATER SYSTEM
PWS ID: AZ0412029 · SONOITA, Arizona 85637
Population Served
125
Total Violations
108
Health-Based Violations
24
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Public/Private
- Connections
- 2
- County
- Santa Cruz
- School/Daycare
- No
- MCL Violations
- 16
- Monitoring Violations
- 62
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 35 | 2014 |
| Nitrate | MR | 17 | 2024 |
| Nitrate | MCL | 14 | 2024 |
| Public Notice | Other | 13 | 2024 |
| Revised Total Coliform Rule | TT | 8 | 2022 |
| Revised Total Coliform Rule | Other | 4 | 2022 |
| Revised Total Coliform Rule | RPT | 4 | 2024 |
| Nitrite | MR | 3 | 2009 |
| Coliform (TCR) | MCL | 2 | 2000 |
| Cadmium | MR | 1 | 1988 |
| Fluoride | MR | 1 | 1988 |
| Arsenic | MR | 1 | 1988 |
| Barium | MR | 1 | 1988 |
| Mercury | MR | 1 | 1988 |
| Chromium | MR | 1 | 1988 |
| Selenium | MR | 1 | 1988 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.