How hard is the water in Tyrrell County, NC?

0.9 grains per gallon

You do not need a softener here.

The median hardness measured in Tyrrell County, NC is 16 mg/L as calcium carbonate, which is 0.9 gpg. That is soft on the USGS scale. It comes from 24 samples at 10 sites between 1995 and 2025, 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 0.8 and 1.2 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: medium (how it is measured).

What to do next

You can skip the softener. At 0.9 gpg the most a softener would fix is the odd water spot. If a salesperson in Tyrrell 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 0.7 to 17.9 gpg

The softest single sample on record in Tyrrell County was 12.2 mg/L and the hardest 306 mg/L, a 25-fold gap. The top quarter of sites read above 1.2 gpg and the bottom quarter below 0.8 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 26.3 gpg

24 groundwater samples from 10 wells put the median at 15.5 mg/L. 384 surface samples from 21 sites put it at 451 mg/L. In Tyrrell County the rivers and lakes come out 25.4 gpg harder. Here the surface water reads harder than the wells, which often points to streams fed by limestone springs or irrigation return flow. A utility here that draws from the aquifer can deliver noticeably different water from a private well next door.

Tyrrell County against the rest of North Carolina

Among the 99 North Carolina counties with data, Tyrrell County is number 74 of 99 counting from the hardest. Across the whole country it is harder than 6% of counties.

Softest in North Carolina: Bertie County at 0.3 gpg. Hardest: Dare County at 63.7 gpg. Closest to Tyrrell County: Rutherford County (0.9), Alexander County (0.8), Catawba County (0.8).