How hard is the water in Jeff Davis County, TX?
5.4 grains per gallon
Optional: a softener helps, but plenty of homes skip it.
The median hardness measured in Jeff Davis County, TX is 92 mg/L as calcium carbonate, which is 5.4 gpg. That is moderately hard on the USGS scale. It comes from 7 samples at 7 sites between 1994 and 2010, 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 1.2 and 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: medium (how it is measured).
What to do next
At 5.4 gpg this is your call. Look for white film on glasses and crust on the shower head: if you see little of either, you can live without one. If you do want one, a 24,000-grain unit is enough, so ask for that size rather than a bigger one. Because Jeff Davis 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 0.5 to 9.7 gpg
The softest single sample on record in Jeff Davis County was 8.8 mg/L and the hardest 166 mg/L, a 19-fold gap. The top quarter of sites read above 9 gpg and the bottom quarter below 1.2 gpg.
What a softener would cost to run
For a household of 3, a 24,000-grain unit covers a week between regenerations. Expect about 117 lb of salt a year (3 bags of 40 lb, about $21), 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 $121 a year.
Sizing at 5.4 gpg
| People | Grains a day | Unit | Salt a year |
|---|---|---|---|
| 1 | 324 | 24,000 | 39 lb |
| 2 | 648 | 24,000 | 79 lb |
| 4 | 1,296 | 24,000 | 158 lb |
| 6 | 1,944 | 24,000 | 237 lb |
Jeff Davis County against the rest of Texas
Among the 217 Texas counties with data, Jeff Davis County is number 175 of 217 counting from the hardest. Across the whole country it is harder than 32% of counties.
Softest in Texas: Nacogdoches County at 0.3 gpg. Hardest: Ward County at 218.5 gpg. Closest to Jeff Davis County: Hopkins County (5.4), Grimes County (5.3), Waller County (5.5).