LOUVIERS WSD
PWS ID: CO0118035 · CASTLE ROCK, Colorado 80104
Population Served
238
Total Violations
242
Health-Based Violations
87
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 113
- County
- Douglas
- School/Daycare
- No
- MCL Violations
- 87
- Monitoring Violations
- 142
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 87 | 2024 |
| Combined Radium (-226 and -228) | MR | 13 | 2023 |
| Public Notice | Other | 10 | 2024 |
| Coliform (TCR) | MR | 8 | 2006 |
| Chlorine | MR | 5 | 2021 |
| Barium | MR | 4 | 2005 |
| Mercury | MR | 4 | 2005 |
| Antimony, Total | MR | 4 | 2005 |
| Selenium | MR | 4 | 2005 |
| Fluoride | MR | 4 | 2005 |
| Thallium, Total | MR | 4 | 2005 |
| Arsenic | MR | 4 | 2005 |
| Beryllium, Total | MR | 4 | 2005 |
| Nickel | MR | 4 | 2005 |
| Cadmium | MR | 4 | 2005 |
| Chromium | MR | 4 | 2005 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2015 |
| Xylenes, Total | MR | 3 | 2015 |
| DICHLOROMETHANE | MR | 3 | 2015 |
| o-Dichlorobenzene | MR | 3 | 2015 |
| p-Dichlorobenzene | MR | 3 | 2015 |
| Vinyl chloride | MR | 3 | 2015 |
| trans-1,2-Dichloroethylene | MR | 3 | 2015 |
| 1,1,1-Trichloroethane | MR | 3 | 2015 |
| Carbon tetrachloride | MR | 3 | 2015 |
| Trichloroethylene | MR | 3 | 2015 |
| CHLOROBENZENE | MR | 3 | 2015 |
| Benzene | MR | 3 | 2015 |
| Toluene | MR | 3 | 2015 |
| Ethylbenzene | MR | 3 | 2015 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.