How hard is the water in Alachua County, FL?
10.8 grains per gallon
A softener will pay its way here.
The median hardness measured in Alachua County, FL is 184 mg/L as calcium carbonate, which is 10.8 gpg. That is very hard on the USGS scale. It comes from 89 samples at 15 sites between 1990 and 2017, 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 10.1 and 12.6 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 10.8 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 Alachua 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 6.8 to 13.1 gpg
The softest single sample on record in Alachua County was 116.5 mg/L and the hardest 223.9 mg/L, a 2-fold gap. The top quarter of sites read above 12.6 gpg and the bottom quarter below 10.1 gpg.
Wells 10.8 gpg, rivers and lakes 2.3 gpg
89 groundwater samples from 15 wells put the median at 184.3 mg/L. 3,577 surface samples from 122 sites put it at 39.4 mg/L. In Alachua County the wells come out 8.5 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 235 lb of salt a year (6 bags of 40 lb, about $42), 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 $142 a year.
Sizing at 10.8 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 648 | 24,000 | 79 lb |
| 2 | 1,296 | 24,000 | 158 lb |
| 4 | 2,592 | 24,000 | 315 lb |
| 6 | 3,888 | 32,000 | 473 lb |
Alachua County against the rest of Florida
Among the 67 Florida counties with data, Alachua County is number 30 of 67 counting from the hardest. Across the whole country it is harder than 54% of counties.
Softest in Florida: Washington County at 0.3 gpg. Hardest: Sarasota County at 32.2 gpg. Closest to Alachua County: Citrus County (10.5), Taylor County (11.1), Suwannee County (11.3).