SHAMROCK COLONY
PWS ID: SD4602267 · CARPENTER, South Dakota 57322
Population Served
75
Total Violations
231
Health-Based Violations
33
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 17
- County
- Clark
- School/Daycare
- No
- MCL Violations
- 31
- Monitoring Violations
- 188
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Fluoride | MCL | 31 | 2012 |
| Revised Total Coliform Rule | MON | 26 | 2025 |
| Fluoride | MR | 17 | 2012 |
| Gross Alpha, Excl. Radon and U | MR | 12 | 2010 |
| Combined Uranium | MR | 12 | 2010 |
| Combined Radium (-226 and -228) | MR | 12 | 2010 |
| Coliform (TCR) | MR | 9 | 2012 |
| Public Notice | Other | 7 | 2011 |
| Consumer Confidence Rule | Other | 3 | 2025 |
| Vinyl chloride | MR | 2 | 2009 |
| DICHLOROMETHANE | MR | 2 | 2009 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2009 |
| 1,1,2-Trichloroethane | MR | 2 | 2009 |
| 1,1-Dichloroethylene | MR | 2 | 2009 |
| CHLOROBENZENE | MR | 2 | 2009 |
| Styrene | MR | 2 | 2009 |
| o-Dichlorobenzene | MR | 2 | 2009 |
| Benzene | MR | 2 | 2009 |
| p-Dichlorobenzene | MR | 2 | 2009 |
| Toluene | MR | 2 | 2009 |
| LASSO | MR | 2 | 2014 |
| Heptachlor epoxide | MR | 2 | 2014 |
| Atrazine | MR | 2 | 2014 |
| Methoxychlor | MR | 2 | 2014 |
| Di(2-ethylhexyl) phthalate | MR | 2 | 2014 |
| Endrin | MR | 2 | 2014 |
| Chlordane | MR | 2 | 2014 |
| OXAMYL | MR | 2 | 2014 |
| Dinoseb | MR | 2 | 2014 |
| Pentachlorophenol | MR | 2 | 2014 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.