Water between the hours of 4am and 8am to avoid evaporation during daylight hours.
The NFBWA Talking Sprinkler, Larry says you only need to water your lawn twice a week.
Cinco MUD 8 recommends watering for 8 minutes for each zone. Replace any broken sprinkler heads. See www.cincomud8.com for rebate info. Check out www.talkingsprinkler.com.