SAN LUIS WSD
PWS ID: CO0112900 · SAN LUIS, Colorado 81152
Population Served
629
Total Violations
29
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 414
- County
- Costilla
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 15
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 9 | 2012 |
| Nitrate | MR | 6 | 2020 |
| TTHM | MR | 3 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2022 |
| Lead and Copper Rule | MR | 3 | 2021 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.