I am replacing an ancient water softener which was removed from the pipes 15 years ago.
The house has two water heaters. Apparently there are also some soft water zones (showers) and hard water zones (kitchen and bar faucets). There are hot/cold and hard/soft water pipes going in all directions. The pipes are in the walls.
After I have installed a new softener, how can I determine which faucets have soft and which ones have hard water?
Thanks