Scotts(R) ProVista™–The Right Way to Water Sod
Aim to water 1½ inches per week. While your sod is actively growing you can either water ¾ of an inch twice a week, or the full 1½ inches once a week. If you receive that much in rainfall one week, plan to turn off your automatic sprinkler system during that time. Of course, always follow any guidelines for watering responsibly if your area is in a drought cycle.
And:
Watering a ProVista Lawn: 3 Big Tips
During the hottest summer months, water your lawn at least twice per week. Provide ¾” of water during each watering session, penetrating deeply and spread evenly out across the entire lawn. From late fall to early spring, watering may only be required once per week, in the same ¾” amount. Avoid watering during a period of rain or immediately after applying fertilizer.