UPPER SIOUX COMMUNITY
PWS ID: 055294902 · GRANITE FALLS, 05 56241
Population Served
1,900
Total Violations
184
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 67
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 184
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 8 | 2024 |
| Antimony, Total | MR | 6 | 2024 |
| Arsenic | MR | 6 | 2024 |
| Barium | MR | 6 | 2024 |
| CYANIDE | MR | 6 | 2024 |
| Fluoride | MR | 6 | 2024 |
| Beryllium, Total | MR | 6 | 2024 |
| Thallium, Total | MR | 6 | 2024 |
| Selenium | MR | 6 | 2024 |
| Mercury | MR | 6 | 2024 |
| Nickel | MR | 6 | 2024 |
| Cadmium | MR | 6 | 2024 |
| Chromium | MR | 6 | 2024 |
| Asbestos | MR | 5 | 2024 |
| Endrin | MR | 3 | 2020 |
| BHC-GAMMA | MR | 3 | 2020 |
| Toxaphene | MR | 3 | 2020 |
| Diquat | MR | 3 | 2020 |
| Endothall | MR | 3 | 2020 |
| Glyphosate | MR | 3 | 2020 |
| OXAMYL | MR | 3 | 2020 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 2020 |
| Aldicarb sulfone | MR | 3 | 2020 |
| Carbofuran | MR | 3 | 2020 |
| Aldicarb | MR | 3 | 2020 |
| LASSO | MR | 3 | 2020 |
| Heptachlor | MR | 3 | 2020 |
| Heptachlor epoxide | MR | 3 | 2020 |
| Benzo(a)pyrene | MR | 3 | 2020 |
| Pentachlorophenol | MR | 3 | 2020 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.