How hard is the water in Greene County, AL?

2.5 grains per gallon

You do not need a softener here.

The median hardness measured in Greene County, AL is 43 mg/L as calcium carbonate, which is 2.5 gpg. That is soft on the USGS scale. It comes from 374 samples at 21 sites between 1991 and 2025, drawn from every sampling site in the county, wells and surface water together.

How much it varies here

Half the sites came in between 1.7 and 3.2 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 2.5 gpg the most a softener would fix is the odd water spot. If a salesperson in Greene 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 0.6 to 20.0 gpg

The softest single sample on record in Greene County was 9.6 mg/L and the hardest 343 mg/L, a 36-fold gap. The top quarter of sites read above 3.2 gpg and the bottom quarter below 1.7 gpg. So even in a soft county, a handful of wells here produce water hard enough to scale a heater.

Wells 1.8 gpg, rivers and lakes 2.6 gpg

4 groundwater samples from 3 wells put the median at 31 mg/L. 370 surface samples from 18 sites put it at 44.7 mg/L. In Greene County the rivers and lakes come out 0.8 gpg harder. Here the surface water reads harder than the wells, which often points to streams fed by limestone springs or irrigation return flow. The two sources are close, so the county figure should hold whichever one your tap is on.

Greene County against the rest of Alabama

Among the 67 Alabama counties with data, Greene County is number 28 of 67 counting from the hardest. Across the whole country it is harder than 19% of counties.

Softest in Alabama: Washington County at 0.2 gpg. Hardest: Walker County at 13.1 gpg. Closest to Greene County: Clarke County (2.4), Cullman County (2.3), Lee County (2.2).