In San Antonio a water softener is a necessity not a luxury. San Antonio has some of the hardest water in the country. A water softener helps protect your largest investment, your home. Calcium adheres to all the pipes in the house, it will take time but it is inevitable it will happen.
No water pressure in your house? Do you seem to have pressure a few days and then it is gone again?
First if you have a water softener put it on by-pass. Then check to see if you have normal pressure. If the pressure went back to normal, yes there is problems with the water softener. If the pressure did not get better call the water company.