How hard is the water in Jefferson County, NY?
13.3 grains per gallon
A softener will pay its way here.
The median hardness measured in Jefferson County, NY is 227 mg/L as calcium carbonate, which is 13.3 gpg. That is very hard on the USGS scale. It comes from 34 samples at 27 sites between 1990 and 2020, 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 10 and 16.7 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
At 13.3 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. Because Jefferson County straddles a decision line, check your own tap with a $10 test strip before you spend anything.
More on sizing a softener for your household.
From 2.9 to 46.8 gpg
The softest single sample on record in Jefferson County was 49.8 mg/L and the hardest 801 mg/L, a 16-fold gap. The top quarter of sites read above 16.7 gpg and the bottom quarter below 10 gpg. So even here some sites draw water soft enough to need nothing at all.
Wells 13.3 gpg, rivers and lakes 4.2 gpg
34 groundwater samples from 27 wells put the median at 227 mg/L. 165 surface samples from 22 sites put it at 72.7 mg/L. In Jefferson County the wells come out 9.1 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.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 290 lb of salt a year (8 bags of 40 lb, about $52), 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 $152 a year.
Sizing at 13.3 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 798 | 24,000 | 97 lb |
| 2 | 1,596 | 24,000 | 194 lb |
| 4 | 3,192 | 24,000 | 388 lb |
| 6 | 4,788 | 40,000 | 583 lb |
Jefferson County against the rest of New York
Among the 61 New York counties with data, Jefferson County is number 20 of 61 counting from the hardest. Across the whole country it is harder than 63% of counties.
Softest in New York: Suffolk County at 1.6 gpg. Hardest: New York County at 161.1 gpg. Closest to Jefferson County: Orange County (13.3), Wyoming County (13.1), Bronx County (13).