How hard is the water in Webster Parish, LA?

1.6 grains per gallon

You do not need a softener here.

The median hardness measured in Webster Parish, LA is 28 mg/L as calcium carbonate, which is 1.6 gpg. That is soft on the USGS scale. It comes from 53 samples at 13 sites between 1992 and 2023, 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 1.4 and 3 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 1.6 gpg the most a softener would fix is the odd water spot. If a salesperson in Webster 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 0.8 to 7.8 gpg

The softest single sample on record in Webster Parish was 14.5 mg/L and the hardest 133 mg/L, a 9-fold gap. The top quarter of sites read above 3 gpg and the bottom quarter below 1.4 gpg.

Wells 1.6 gpg, rivers and lakes 0.8 gpg

53 groundwater samples from 13 wells put the median at 27.6 mg/L. 89 surface samples from 3 sites put it at 14 mg/L. In Webster Parish the wells come out 0.8 gpg harder. Groundwater sits in contact with rock for years and picks up calcium and magnesium as it goes, so wells usually read harder. The two sources are close, so the county figure should hold whichever one your tap is on.

Webster Parish against the rest of Louisiana

Among the 64 Louisiana counties with data, Webster Parish is number 43 of 64 counting from the hardest. Across the whole country it is harder than 13% of counties.

Softest in Louisiana: Lincoln Parish at 0.1 gpg. Hardest: St. Bernard Parish at 53.9 gpg. Closest to Webster Parish: Ouachita Parish (1.6), LaSalle Parish (1.5), De Soto Parish (1.1).