Nice structure - you should get a lot of use out of it for a variety of garden tasks.
As for running hydro, have you considered a large water container? I have one that came from a camper or such that holds about 5 gallons. Since my rain barrels are nearby, I haul rainwater to fill up the large container which serves my needs for a couple of weeks. During the winter, I fill it up with city water and let it sit for a week or two before using (to minimize the chlorine).
