Water Quality in South Dakota
Water hardness and contaminant data for 3 cities across South Dakota. Find your city below to see a detailed water quality profile.
3
Cities
225
Avg Hardness (PPM)
250
Hardest City (PPM)
South Dakota Cities by Water Hardness
| City | Hardness (PPM) | Level | PFAS (ppt) | Source |
|---|---|---|---|---|
| Sioux Falls | 250 | Very Hard | 3 | Big Sioux River + wells |
| Rapid City | 221 | Very Hard | 5 | Pactola Reservoir, groundwater |
| Aberdeen | 204 | Very Hard | 4 | Elm River aquifer |