Salt, and what it actually costs
The brine tank holds two bags. A monthly regeneration uses about 50 gallons of water, which works out at roughly $5 a month in water. That is the true running cost of a softener and nobody publishes it, so here it is.
Standard 40 to 50 pound bags, and you can buy them anywhere. BJ’s, Costco, Sam’s Club, Tractor Supply, Lowe’s, Home Depot. Buy them from whoever is closest. We do not mark salt up and we would rather you did not make a special trip for it.
If you are going through salt much faster than a bag every two to three months on a properly sized softener, something is set wrong. Tell us and we will look at it.