Learn more on our water softener page here: https://rtolsonplumbing.com/services/water-softeners/
Iron Exchange resin inside of the tank collects Calcium, magnesium, and sulfur in other words dissolved rock. Once the softener gets dirty is uses salt to clean it self and then it’s like brand new again. After the flush it brings clean water in and sends the salty water down the drain.
Thanks! Your answer is awaiting moderation.