The back yard is a little over 100x100 and has seven zones . There?s another two zones in the front for a total of nine. Thirty minutes a zone means I?m watering for four and a half hours each time, three days a week.

Actually, we also had four people in the house using up water as well. Two of them have finally moved out so maybe this summer will be a little lower. I?ve only had the sprinkles on for about a month so we?ll see.