I have a question. Where do you tap in for the outside hose bib that you use for watering? Is it raw water, iron filtered, or softened?

I have four different hose bib outlets; raw for sprinklers away from the house, iron filtered hard water for soaker hoses, and filtered soft water (hot and cold) for washing.

My equipment is down in my crawlspace which is height limited so cannot fit a taller tank. Both my iron filter and softener poke up through the floor under the stairs where the access hatch is to the crawlspace. No room there for a taller tank either. If I want to add more retention and/or more drawdown capacity, I need to daisy chain tanks to do it.