How hard is the water in Montgomery County, VA?
13.6 grains per gallon
A softener will pay its way here.
The median hardness measured in Montgomery County, VA is 232 mg/L as calcium carbonate, which is 13.6 gpg. That is very hard on the USGS scale. It comes from 7 samples at 5 sites between 1997 and 2026, 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 11.3 and 14.3 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: medium (how it is measured).
What to do next
At 13.6 gpg a softener pays its way here. Before you buy, check the quoted unit's grain capacity against the sizing table below, and ask whether it regenerates on demand, which uses less salt than a timer. Call your utility for its own report if you are on city water.
More on sizing a softener for your household.
From 10.7 to 16.4 gpg
The softest single sample on record in Montgomery County was 183 mg/L and the hardest 281 mg/L, a 2-fold gap. The top quarter of sites read above 14.3 gpg and the bottom quarter below 11.3 gpg.
Wells 13.6 gpg, rivers and lakes 12.2 gpg
7 groundwater samples from 5 wells put the median at 232 mg/L. 402 surface samples from 34 sites put it at 209.5 mg/L. In Montgomery County the wells come out 1.4 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.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 296 lb of salt a year (8 bags of 40 lb, about $53), and roughly 2,346 gallons of regeneration water. Installed, most units run $1,000 to $4,500; spread over 15 years with salt, that is about $153 a year.
Sizing at 13.6 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 816 | 24,000 | 99 lb |
| 2 | 1,632 | 24,000 | 199 lb |
| 4 | 3,264 | 24,000 | 397 lb |
| 6 | 4,896 | 40,000 | 596 lb |
Montgomery County against the rest of Virginia
Among the 126 Virginia counties with data, Montgomery County is number 10 of 126 counting from the hardest. Across the whole country it is harder than 64% of counties.
Softest in Virginia: Isle of Wight County at 0.4 gpg. Hardest: Clarke County at 20.1 gpg. Closest to Montgomery County: Rockingham County (13.6), Lee County (13.4), Bristol city (13.4).