How hard is the water in Suffolk County, MA?

3.5 grains per gallon

You do not need a softener here.

The median hardness measured in Suffolk County, MA is 59 mg/L as calcium carbonate, which is 3.5 gpg. That is soft on the USGS scale. It comes from 104 samples at 15 sites between 1997 and 2004, drawn from every sampling site in the county, wells and surface water together.

How much it varies here

Half the sites came in between 1.8 and 6.9 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 3.5 gpg the most a softener would fix is the odd water spot. If a salesperson in Suffolk County says otherwise, ask to see their reading in grains per gallon and compare it with this one. Because Suffolk 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 1.1 to 8.5 gpg

The softest single sample on record in Suffolk County was 19.1 mg/L and the hardest 145 mg/L, an 8-fold gap. The top quarter of sites read above 6.9 gpg and the bottom quarter below 1.8 gpg.

Suffolk County against the rest of Massachusetts

Among the 12 Massachusetts counties with data, Suffolk County is number 7 of 12 counting from the hardest. Across the whole country it is harder than 24% of counties.

Softest in Massachusetts: Barnstable County at 1.3 gpg. Hardest: Berkshire County at 8.9 gpg. Closest to Suffolk County: Middlesex County (3.6), Hampden County (3.8), Bristol County (2.6).