How hard is the water in East Feliciana Parish, LA?

0.4 grains per gallon

You do not need a softener here.

The median hardness measured in East Feliciana Parish, LA is 8 mg/L as calcium carbonate, which is 0.4 gpg. That is soft on the USGS scale. It comes from 18 samples at 12 sites between 1990 and 2024, drawn from groundwater wells, which is what most taps and private wells in the county draw on.

How much it varies here

Half the sites came in between 0.3 and 1.1 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 0.4 gpg the most a softener would fix is the odd water spot. If a salesperson in East Feliciana Parish 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 0.1 to 1.6 gpg

The softest single sample on record in East Feliciana Parish was 2.4 mg/L and the hardest 27 mg/L, an 11-fold gap. The top quarter of sites read above 1.1 gpg and the bottom quarter below 0.3 gpg.

Wells 0.4 gpg, rivers and lakes 0.9 gpg

18 groundwater samples from 12 wells put the median at 7.7 mg/L. 134 surface samples from 2 sites put it at 15.5 mg/L. In East Feliciana Parish the rivers and lakes come out 0.5 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.

East Feliciana Parish against the rest of Louisiana

Among the 64 Louisiana counties with data, East Feliciana Parish is number 55 of 64 counting from the hardest. Across the whole country it is harder than 2% of counties.

Softest in Louisiana: Lincoln Parish at 0.1 gpg. Hardest: St. Bernard Parish at 53.9 gpg. Closest to East Feliciana Parish: East Baton Rouge Parish (0.5), Union Parish (0.4), Tangipahoa Parish (0.5).