Irrigation systems make watering landscapes easier but if not maintained these systems can make your water bills increase in a big way.
It is very important that you inspect your irrigation system before you turn it on for the growing season. (Yes! You should turn it off in the fall and winter.)
Grass is by far the thirstiest plant in your landscape so try to minimize it and keep only what you need. Fill your yard with native trees, shrubs, and mulched areas. Keeping a small lawn in the front is better on the environment and on your water bill.