As for the water softener, most homes in Fremont do not have one â€“ itâ€™s totally optional and, in my opinion, not necessary. Fremont water quality is VERY good. Same thing applies to water purification systems.
Sears and Home Depot are good sources for built-in water treatment systems.
No law saying they have to do so.
Sealing granite is VERY simple, get a gel bottle from Home depot, take a soft cloth and cover the counter with the cleasr gel, let completely dry for 24-48 hrs and you are done!
Water softner installation is a personal preference.
All the best,