TRANQUILLITY IRRIGATION DISTRICT
PWS ID: CA1010030 · TRANQUILLITY, California 93668
Population Served
807
Total Violations
96
Health-Based Violations
71
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 340
- County
- Fresno
- School/Daycare
- No
- MCL Violations
- 70
- Monitoring Violations
- 23
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 52 | 2014 |
| Coliform (TCR) | MCL | 18 | 2015 |
| Coliform (TCR) | MR | 13 | 2013 |
| Nitrate | MR | 5 | 2012 |
| Lead and Copper Rule | MR | 3 | 2024 |
| Revised Total Coliform Rule | MON | 2 | 2017 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.