How hard is the water in Haywood County, TN?

2.3 grains per gallon

You do not need a softener here.

The median hardness measured in Haywood County, TN is 39 mg/L as calcium carbonate, which is 2.3 gpg. That is soft on the USGS scale. It comes from 223 samples at 34 sites between 1990 and 2019, drawn from every sampling site in the county, wells and surface water together.

How much it varies here

Half the sites came in between 1.2 and 3.3 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 2.3 gpg the most a softener would fix is the odd water spot. If a salesperson in Haywood 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 0.9 to 20.4 gpg

The softest single sample on record in Haywood County was 15 mg/L and the hardest 350 mg/L, a 23-fold gap. The top quarter of sites read above 3.3 gpg and the bottom quarter below 1.2 gpg. So even in a soft county, a handful of wells here produce water hard enough to scale a heater.

Wells 0.9 gpg, rivers and lakes 2.3 gpg

3 groundwater samples from 1 wells put the median at 15.4 mg/L. 220 surface samples from 33 sites put it at 39 mg/L. In Haywood County the rivers and lakes come out 1.4 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.

Haywood County against the rest of Tennessee

Among the 95 Tennessee counties with data, Haywood County is number 78 of 95 counting from the hardest. Across the whole country it is harder than 18% of counties.

Softest in Tennessee: Fayette County at 0.5 gpg. Hardest: Fentress County at 42.9 gpg. Closest to Haywood County: Johnson County (2.3), Madison County (2.3), Carter County (2.2).