GREAT SAND DUNES HQ
PWS ID: CO0202300 · MOSCA, Colorado 81146
Population Served
1,400
Total Violations
52
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Federal
- Connections
- 16
- County
- Alamosa
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 45
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 12 | 2020 |
| Revised Total Coliform Rule | MON | 6 | 2021 |
| Coliform (TCR) | MR | 6 | 2008 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 4 | 2024 |
| Barium | MR | 3 | 2002 |
| Total Polychlorinated Biphenyls (PCB) | MR | 3 | 2011 |
| Chlorine | MR | 3 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2019 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 2024 |
| Antimony, Total | MR | 3 | 2002 |
| TTHM | MR | 3 | 2019 |
| Public Notice | Other | 2 | 2020 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.