JAMESTOWN TOWN OF
PWS ID: CO0107401 · JAMESTOWN, Colorado 80455
Population Served
280
Total Violations
418
Health-Based Violations
96
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 105
- County
- Boulder
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 279
- Treatment Tech Violations
- 96
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 48 | 2018 |
| Interim Enhanced Surface Water Treatment Rule | TT | 43 | 2017 |
| Surface Water Treatment Rule | MR | 38 | 2024 |
| E. COLI | MR | 22 | 2018 |
| Lead and Copper Rule | MR | 16 | 2018 |
| Interim Enhanced Surface Water Treatment Rule | MR | 12 | 2024 |
| Public Notice | Other | 9 | 2025 |
| Chlorine | MR | 9 | 2023 |
| Barium | MR | 7 | 2016 |
| Chromium | MR | 7 | 2016 |
| Mercury | MR | 7 | 2016 |
| Nickel | MR | 7 | 2016 |
| Beryllium, Total | MR | 7 | 2016 |
| Selenium | MR | 7 | 2016 |
| Thallium, Total | MR | 7 | 2016 |
| Revised Total Coliform Rule | MON | 7 | 2017 |
| Antimony, Total | MR | 7 | 2016 |
| Cadmium | MR | 7 | 2016 |
| Coliform (TCR) | MR | 7 | 2007 |
| Arsenic | MR | 7 | 2016 |
| Fluoride | MR | 6 | 2016 |
| Lead and Copper Rule | TT | 5 | 2018 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2016 |
| Xylenes, Total | MR | 4 | 2016 |
| DICHLOROMETHANE | MR | 4 | 2016 |
| p-Dichlorobenzene | MR | 4 | 2016 |
| Vinyl chloride | MR | 4 | 2016 |
| 1,1-Dichloroethylene | MR | 4 | 2016 |
| trans-1,2-Dichloroethylene | MR | 4 | 2016 |
| 1,2-Dichloroethane | MR | 4 | 2016 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.