How hard is the water in Glenn County, CA?
13.3 grains per gallon
A softener will pay its way here.
The median hardness measured in Glenn County, CA is 227 mg/L as calcium carbonate, which is 13.3 gpg. That is very hard on the USGS scale. It comes from 73 samples at 33 sites between 1997 and 2021, 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 8.2 and 19.6 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 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 Glenn 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 36.2 gpg
The softest single sample on record in Glenn County was 50.3 mg/L and the hardest 619 mg/L, a 12-fold gap. The top quarter of sites read above 19.6 gpg and the bottom quarter below 8.2 gpg. So even here some sites draw water soft enough to need nothing at all.
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 |
Glenn County against the rest of California
Among the 58 California counties with data, Glenn County is number 19 of 58 counting from the hardest. Across the whole country it is harder than 63% of counties.
Softest in California: Sierra County at 1.7 gpg. Hardest: Calaveras County at 98.3 gpg. Closest to Glenn County: Riverside County (13.1), San Francisco County (13.1), Santa Cruz County (12.9).