How hard is the water in Jasper County, MS?
2.8 grains per gallon
You do not need a softener here.
The median hardness measured in Jasper County, MS is 47 mg/L as calcium carbonate, which is 2.8 gpg. That is soft on the USGS scale. It comes from 2 samples at 2 sites between 1991 and 2014, drawn from every sampling site in the county, wells and surface water together.
How much it varies here
Half the sites came in between 1.6 and 3.9 gpg. That spread crosses a decision line, so some homes here land on a different answer. A $10 test strip on your own tap settles it. Confidence in the county figure: low (how it is measured).
What to do next
You can skip the softener. At 2.8 gpg the most a softener would fix is the odd water spot. If a salesperson in Jasper County says otherwise, ask to see their reading in grains per gallon and compare it with this one. Because Jasper County straddles a decision line, check your own tap with a $10 test strip before you spend anything.
More on when a softener is not worth it.
Jasper County against the rest of Mississippi
Among the 78 Mississippi counties with data, Jasper County is number 21 of 78 counting from the hardest. Across the whole country it is harder than 21% of counties.
Softest in Mississippi: Issaquena County at 0.1 gpg. Hardest: Franklin County at 60.5 gpg. Closest to Jasper County: Clarke County (2.6), Calhoun County (2.4), Monroe County (2.3).