How hard is the water in Halifax County, NC?
1.6 grains per gallon
You do not need a softener here.
The median hardness measured in Halifax County, NC is 27 mg/L as calcium carbonate, which is 1.6 gpg. That is soft on the USGS scale. It comes from 38 samples at 7 sites between 1990 and 2013, drawn from every sampling site in the county, wells and surface water together.
How much it varies here
Half the sites came in between 1.4 and 1.7 gpg. The whole middle of that range gives the same answer, so a test of your own tap is unlikely to change it. Confidence in the county figure: medium (how it is measured).
What to do next
You can skip the softener. At 1.6 gpg the most a softener would fix is the odd water spot. If a salesperson in Halifax County says otherwise, ask to see their reading in grains per gallon and compare it with this one.
More on when a softener is not worth it.
From 1.3 to 2.0 gpg
The softest single sample on record in Halifax County was 22 mg/L and the hardest 33.6 mg/L, a 2-fold gap. The top quarter of sites read above 1.7 gpg and the bottom quarter below 1.4 gpg.
Halifax County against the rest of North Carolina
Among the 99 North Carolina counties with data, Halifax County is number 55 of 99 counting from the hardest. Across the whole country it is harder than 13% of counties.
Softest in North Carolina: Bertie County at 0.3 gpg. Hardest: Dare County at 63.7 gpg. Closest to Halifax County: Columbus County (1.6), Franklin County (1.5), Lenoir County (1.5).