How hard is the water in Madison County, NY?
11.7 grains per gallon
A softener will pay its way here.
The median hardness measured in Madison County, NY is 201 mg/L as calcium carbonate, which is 11.7 gpg. That is very hard on the USGS scale. It comes from 18 samples at 16 sites between 2002 and 2022, 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 9 and 18 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: medium (how it is measured).
What to do next
At 11.7 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 Madison 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 4.6 to 66.0 gpg
The softest single sample on record in Madison County was 78.8 mg/L and the hardest 1,130 mg/L, a 14-fold gap. The top quarter of sites read above 18 gpg and the bottom quarter below 9 gpg.
Wells 11.7 gpg, rivers and lakes 11 gpg
18 groundwater samples from 16 wells put the median at 200.5 mg/L. 25 surface samples from 4 sites put it at 188 mg/L. In Madison County the wells come out 0.7 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 256 lb of salt a year (7 bags of 40 lb, about $46), 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 $146 a year.
Sizing at 11.7 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 702 | 24,000 | 85 lb |
| 2 | 1,404 | 24,000 | 171 lb |
| 4 | 2,808 | 24,000 | 342 lb |
| 6 | 4,212 | 32,000 | 512 lb |
Madison County against the rest of New York
Among the 61 New York counties with data, Madison County is number 27 of 61 counting from the hardest. Across the whole country it is harder than 57% of counties.
Softest in New York: Suffolk County at 1.6 gpg. Hardest: New York County at 161.1 gpg. Closest to Madison County: Cayuga County (12), Albany County (12), Washington County (12.2).