GREENWOOD COLONY
PWS ID: SD4602022 · DELMONT, South Dakota 57330
Population Served
85
Total Violations
305
Health-Based Violations
21
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 43
- County
- Douglas
- School/Daycare
- No
- MCL Violations
- 21
- Monitoring Violations
- 274
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 40 | 2015 |
| Coliform (TCR) | MCL | 21 | 2014 |
| Lead and Copper Rule | MR | 13 | 2019 |
| E. COLI | MR | 12 | 2020 |
| Revised Total Coliform Rule | MON | 8 | 2025 |
| Arsenic | MR | 5 | 2016 |
| Cadmium | MR | 5 | 2016 |
| Fluoride | MR | 5 | 2016 |
| Mercury | MR | 5 | 2016 |
| Selenium | MR | 5 | 2016 |
| Thallium, Total | MR | 5 | 2016 |
| Nickel | MR | 5 | 2016 |
| Antimony, Total | MR | 5 | 2016 |
| Toluene | MR | 5 | 2019 |
| Chromium | MR | 5 | 2016 |
| Barium | MR | 5 | 2016 |
| Beryllium, Total | MR | 5 | 2016 |
| cis-1,2-Dichloroethylene | MR | 4 | 2019 |
| Vinyl chloride | MR | 4 | 2019 |
| 1,1,1-Trichloroethane | MR | 4 | 2019 |
| Tetrachloroethylene | MR | 4 | 2019 |
| 1,1,2-Trichloroethane | MR | 4 | 2019 |
| Xylenes, Total | MR | 4 | 2019 |
| CHLOROBENZENE | MR | 4 | 2019 |
| o-Dichlorobenzene | MR | 4 | 2019 |
| trans-1,2-Dichloroethylene | MR | 4 | 2019 |
| 1,2-Dichloropropane | MR | 4 | 2019 |
| Benzene | MR | 4 | 2019 |
| p-Dichlorobenzene | MR | 4 | 2019 |
| 1,2-Dichloroethane | MR | 4 | 2019 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.