A better question would be, how much should I water my lawn?
Irrigation is measured in inches, not time. Sprinkler systems differ at the amount of water that comes out. Systems should be adjusted according to temperature and precipitation. During our hot summer, 95+ degrees F, 2.5″-3.0″ of water should be applied per week. Depending on your soil type, you can water anywhere from 0.25″-1.00″ per watering. To learn how to measure the water from your sprinkling system, visit our How To page.