How hard is the water in Alleghany County, VA?

3.1 grains per gallon

You do not need a softener here.

The median hardness measured in Alleghany County, VA is 54 mg/L as calcium carbonate, which is 3.1 gpg. That is soft on the USGS scale. It comes from 484 samples at 33 sites between 2000 and 2026, drawn from every sampling site in the county, wells and surface water together.

How much it varies here

Half the sites came in between 1.3 and 6.6 gpg. That spread crosses a decision line, so some homes here land on a different answer. A $10 test strip on your own tap settles it. Confidence in the county figure: high (how it is measured).

What to do next

You can skip the softener. At 3.1 gpg the most a softener would fix is the odd water spot. If a salesperson in Alleghany County says otherwise, ask to see their reading in grains per gallon and compare it with this one. Because Alleghany County straddles a decision line, check your own tap with a $10 test strip before you spend anything.

More on when a softener is not worth it.

From 0.7 to 21.5 gpg

The softest single sample on record in Alleghany County was 12.5 mg/L and the hardest 368 mg/L, a 29-fold gap. The top quarter of sites read above 6.6 gpg and the bottom quarter below 1.3 gpg. So even in a soft county, a handful of wells here produce water hard enough to scale a heater.

Wells 8.9 gpg, rivers and lakes 3.1 gpg

3 groundwater samples from 3 wells put the median at 152 mg/L. 479 surface samples from 29 sites put it at 53.2 mg/L. In Alleghany County the wells come out 5.8 gpg harder. Groundwater sits in contact with rock for years and picks up calcium and magnesium as it goes, so wells usually read harder. A utility here that draws from the river can deliver noticeably different water from a private well next door.

Alleghany County against the rest of Virginia

Among the 126 Virginia counties with data, Alleghany County is number 55 of 126 counting from the hardest. Across the whole country it is harder than 22% of counties.

Softest in Virginia: Isle of Wight County at 0.4 gpg. Hardest: Clarke County at 20.1 gpg. Closest to Alleghany County: Halifax County (3.1), Hopewell city (3.2), Prince George County (3).