How hard is the water in Marion County, AL?

0.8 grains per gallon

You do not need a softener here.

The median hardness measured in Marion County, AL is 13 mg/L as calcium carbonate, which is 0.8 gpg. That is soft on the USGS scale. It comes from 399 samples at 39 sites between 1991 and 2026, drawn from every sampling site in the county, wells and surface water together.

How much it varies here

Half the sites came in between 0.5 and 1.6 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: high (how it is measured).

What to do next

You can skip the softener. At 0.8 gpg the most a softener would fix is the odd water spot. If a salesperson in Marion 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 0.2 to 12.6 gpg

The softest single sample on record in Marion County was 3.4 mg/L and the hardest 215 mg/L, a 63-fold gap. The top quarter of sites read above 1.6 gpg and the bottom quarter below 0.5 gpg. So even in a soft county, a handful of wells here produce water hard enough to scale a heater.

Marion County against the rest of Alabama

Among the 67 Alabama counties with data, Marion County is number 58 of 67 counting from the hardest. Across the whole country it is harder than 4% of counties.

Softest in Alabama: Washington County at 0.2 gpg. Hardest: Walker County at 13.1 gpg. Closest to Marion County: Coosa County (0.7), Tallapoosa County (0.7), Clay County (0.7).