76 RANCH ESTATES
PWS ID: SD4602259 · BLACK HAWK, South Dakota 57718
Population Served
40
Total Violations
531
Health-Based Violations
12
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 16
- County
- Lawrence
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 517
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 23 | 2006 |
| Gross Alpha, Excl. Radon and U | MR | 16 | 2006 |
| Combined Uranium | MR | 16 | 2006 |
| Combined Radium (-226 and -228) | MR | 16 | 2006 |
| Coliform (TCR) | MCL | 12 | 2011 |
| Heptachlor epoxide | MR | 9 | 2006 |
| Atrazine | MR | 9 | 2006 |
| Benzo(a)pyrene | MR | 9 | 2006 |
| Methoxychlor | MR | 9 | 2006 |
| Di(2-ethylhexyl) phthalate | MR | 9 | 2006 |
| Endrin | MR | 9 | 2006 |
| HEXACHLOROBENZENE | MR | 9 | 2006 |
| BHC-GAMMA | MR | 9 | 2006 |
| Chlordane | MR | 9 | 2006 |
| Toxaphene | MR | 9 | 2006 |
| Simazine | MR | 9 | 2006 |
| Heptachlor | MR | 9 | 2006 |
| Di(2-ethylhexyl) adipate | MR | 9 | 2006 |
| LASSO | MR | 9 | 2006 |
| Hexachlorocyclopentadiene | MR | 9 | 2006 |
| Total Polychlorinated Biphenyls (PCB) | MR | 9 | 2006 |
| Carbofuran | MR | 8 | 2006 |
| Dalapon | MR | 8 | 2006 |
| Pentachlorophenol | MR | 8 | 2006 |
| Picloram | MR | 8 | 2006 |
| ETHYLENE DIBROMIDE | MR | 8 | 2006 |
| Glyphosate | MR | 8 | 2006 |
| Vinyl chloride | MR | 8 | 2006 |
| 1,1,1-Trichloroethane | MR | 8 | 2006 |
| Ethylbenzene | MR | 8 | 2006 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.