Water in the coolest part of the day (before 10 a.m.) and on nonwindy days to reduce water loss from evaporation.
Use sprinklers that deliver large droplets in a flat pattern rather than those that throw the water high into the air to avoid evaporation.
Place your sprinklers and hoses carefully so that water does not land on driveways, sidewalks, or streets.
Use automatic timers on sprinklers if you will be leaving during the watering.
Thirsty? Water your lawn and garden only when absolutely necessary and avoid overwatering. During dry spells, water lawns deeply (23 cm of water) every five days, rather than for a short period every day.