Deep, not daily
About an inch of water a week, split into one to three sessions, grows deeper roots than short daily watering.
Water early
Early morning watering loses less to evaporation and lets grass dry before evening, which helps prevent disease.
Do the tuna-can test
Set a few empty cans in the yard and time how long it takes to fill one inch. Now you know your run time.
General information only, not legal or professional advice.