How hard is the water in Grays Harbor County, WA?

1.9 grains per gallon

You do not need a softener here.

The median hardness measured in Grays Harbor County, WA is 33 mg/L as calcium carbonate, which is 1.9 gpg. That is soft on the USGS scale. It comes from 28 samples at 1 sites between 1990 and 1994, drawn from every sampling site in the county, wells and surface water together.

How much it varies here

Half the sites came in between 1.9 and 1.9 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: low (how it is measured).

What to do next

You can skip the softener. At 1.9 gpg the most a softener would fix is the odd water spot. If a salesperson in Grays Harbor 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 1.9 to 1.9 gpg

The softest single sample on record in Grays Harbor County was 32.5 mg/L and the hardest 32.5 mg/L, a 1-fold gap. The top quarter of sites read above 1.9 gpg and the bottom quarter below 1.9 gpg.

Grays Harbor County against the rest of Washington

Among the 38 Washington counties with data, Grays Harbor County is number 34 of 38 counting from the hardest. Across the whole country it is harder than 15% of counties.

Softest in Washington: Chelan County at 0.6 gpg. Hardest: Island County at 20.7 gpg. Closest to Grays Harbor County: Cowlitz County (1.6), Pacific County (2.3), Jefferson County (1.4).