COLOWYO COAL COMPANY
PWS ID: CO0241186 · DENVER, Colorado 80233
Population Served
500
Total Violations
145
Health-Based Violations
52
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 6
- County
- Moffat
- School/Daycare
- No
- MCL Violations
- 34
- Monitoring Violations
- 88
- Treatment Tech Violations
- 18
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 25 | 2024 |
| Surface Water Treatment Rule | TT | 18 | 2003 |
| Coliform (TCR) | MR | 10 | 2012 |
| Total Haloacetic Acids (HAA5) | MCL | 9 | 2005 |
| Chlorine | MR | 9 | 2022 |
| Nitrate | MR | 7 | 2007 |
| Surface Water Treatment Rule | MR | 6 | 2002 |
| Arsenic | MR | 4 | 2007 |
| Cadmium | MR | 4 | 2007 |
| Chromium | MR | 4 | 2007 |
| Nickel | MR | 4 | 2007 |
| Selenium | MR | 4 | 2007 |
| Fluoride | MR | 4 | 2007 |
| Barium | MR | 4 | 2007 |
| Mercury | MR | 4 | 2007 |
| Thallium, Total | MR | 4 | 2007 |
| Beryllium, Total | MR | 4 | 2007 |
| Antimony, Total | MR | 4 | 2007 |
| Lead and Copper Rule | MR | 3 | 2011 |
| Revised Total Coliform Rule | MON | 3 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2025 |
| TTHM | MR | 3 | 2025 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.