MESA WSD
PWS ID: CO0139505 · MESA, Colorado 81643
Population Served
330
Total Violations
93
Health-Based Violations
3
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 86
- County
- Mesa
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 90
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 56 | 2006 |
| Lead and Copper Rule | MR | 10 | 2006 |
| Total Haloacetic Acids (HAA5) | MR | 9 | 2023 |
| Nitrate | MR | 6 | 1994 |
| TTHM | MR | 3 | 2016 |
| Long Term 2 Enhanced Surface Water Treatment Rule | MR | 3 | 2017 |
| Coliform (TCR) | MR | 3 | 2001 |
| Surface Water Treatment Rule | TT | 3 | 2001 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.