RANCHO SIERRITA WELL ASSOC
PWS ID: AZ0410286 · TUCSON, Arizona 85736
Population Served
55
Total Violations
74
Health-Based Violations
5
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Public/Private
- Connections
- 30
- County
- Pima
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 41
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | RPT | 15 | 2024 |
| Coliform (TCR) | MR | 14 | 2013 |
| Consumer Confidence Rule | Other | 12 | 2015 |
| Lead and Copper Rule | MR | 5 | 2007 |
| Revised Total Coliform Rule | MCL | 5 | 2017 |
| Nitrate | MR | 2 | 2003 |
| TTHM | MR | 2 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2022 |
| E. COLI | MR | 2 | 2017 |
| CYANIDE | MR | 1 | 1998 |
| Antimony, Total | MR | 1 | 1998 |
| Selenium | MR | 1 | 1998 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 1998 |
| Arsenic | MR | 1 | 1998 |
| Barium | MR | 1 | 1998 |
| Chromium | MR | 1 | 1998 |
| Thallium, Total | MR | 1 | 1998 |
| Fluoride | MR | 1 | 1998 |
| Mercury | MR | 1 | 1998 |
| Nickel | MR | 1 | 1998 |
| Cadmium | MR | 1 | 1998 |
| Chlorine | MR | 1 | 2018 |
| Beryllium, Total | MR | 1 | 1998 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.