There are a number of ways to save water, and they all start with you. When washing dishes by hand, don't let the water run while rinsing.
Evaporative coolers require a seasonal maintenance checkup.
Install covers on pools and spas to avoid water evaporation. Use the garbage disposal less often. Plant during the spring or fall when the watering requirements are lower. Keep a pitcher of water in the refrigerator instead of running the tap for cold drinks. Check your water meter and bill to track your water usage.