New Designer corner lot: 16000-18,500 gal.
with 5 stations and about 40 heads. Watering 2x weekly unless the sensor bypasses the set day. We have several corner lots in the neighborhood and they see similar, if not higher usage. I'm thinking of cutting back to 1x a week since the zoysia will be going dormant over the winter. If you look at the recommended length of time for each station on the inside of your control box, it's way less than what both the sprinkler installers and lawn companies set the timers to. I was a bit shocked at how much water was being used for lawns. I'm hoping when our new lawns get well established we can cut the timers back.
Potable water usage is averaging between 1800 and 2,300 gal. monthly, which seems normal for two in a household.