BUFFALO GAP
PWS ID: SD4600077 · BUFFALO GAP, South Dakota 57722
Population Served
126
Total Violations
514
Health-Based Violations
62
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 93
- County
- Custer
- School/Daycare
- No
- MCL Violations
- 45
- Monitoring Violations
- 397
- Treatment Tech Violations
- 17
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 73 | 2016 |
| Chlorine | MR | 52 | 2025 |
| Combined Uranium | MCL | 34 | 2007 |
| Lead and Copper Rule | MR | 27 | 2023 |
| Revised Total Coliform Rule | MON | 14 | 2023 |
| Coliform (TCR) | Other | 14 | 1998 |
| Public Notice | Other | 13 | 2016 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 13 | 2025 |
| Coliform (TCR) | MCL | 11 | 2010 |
| Nitrite | MR | 7 | 2005 |
| Vinyl chloride | MR | 4 | 2006 |
| 1,1,1-Trichloroethane | MR | 4 | 2006 |
| Ethylbenzene | MR | 4 | 2006 |
| DICHLOROMETHANE | MR | 4 | 2006 |
| Xylenes, Total | MR | 4 | 2006 |
| 1,1-Dichloroethylene | MR | 4 | 2006 |
| CHLOROBENZENE | MR | 4 | 2006 |
| Styrene | MR | 4 | 2006 |
| trans-1,2-Dichloroethylene | MR | 4 | 2006 |
| p-Dichlorobenzene | MR | 4 | 2006 |
| 1,2-Dichloroethane | MR | 4 | 2006 |
| LASSO | MR | 4 | 1993 |
| Heptachlor | MR | 4 | 1993 |
| Methoxychlor | MR | 4 | 1993 |
| Di(2-ethylhexyl) adipate | MR | 4 | 1993 |
| Di(2-ethylhexyl) phthalate | MR | 4 | 1993 |
| Hexachlorocyclopentadiene | MR | 4 | 1993 |
| Endrin | MR | 4 | 1993 |
| Simazine | MR | 4 | 1993 |
| Aldicarb | MR | 4 | 1993 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.