LYONS TOWN OF
PWS ID: CO0107496 · LYONS, Colorado 80540
Population Served
2,990
Total Violations
114
Health-Based Violations
86
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 962
- County
- Boulder
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 28
- Treatment Tech Violations
- 78
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 75 | 1999 |
| Coliform (TCR) | MR | 13 | 2006 |
| Surface Water Treatment Rule | MR | 9 | 2003 |
| Coliform (TCR) | MCL | 8 | 2009 |
| Lead and Copper Rule | TT | 3 | 1999 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1992 |
| Nitrate-Nitrite | MR | 3 | 1995 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.