Stick with the touchless the only thing worse than an idiot with a scrub brush is an idiot with a scrub brush + road grime.
As for the recycled water most modern places filter their recycled water before using it again, after all the debris would plug the sprayers if they didn't filter.
One thing I have done is uilized a quick detailer right after I get home from the wash. this will take care of any road residue that the touchless may have left.
Hope this helps, ohh yea there is one other thing. you could move to southern Cali where the median temp is 72 degreesF lol.
Take care and good luck