Detect and repair all leaks in irrigation systems.
Set sprinklers to water the lawn or garden only - not the street or sidewalk.
Use properly treated wastewater for irrigation where available.
Use soaker hoses and trickle irrigation systems.
Water the lawn or garden during the coolest part of the day (early morning is best). Do not water on windy days.
Water trees and shrubs, which have deep root systems, longer and less frequently than shallow-rooted plants which require smaller amounts of water more often. Check with local extension service on the amount and frequency of watering needed in your area.