Set lawn mower blades one notch higher. Longer grass means less evaporation. Saves 500 to 1,500 gallons each month. Direct the water drain line to a flower bed, tree base, or lawn. Drive your car onto a lawn to wash it.
Rinse water can help water the grass.
Tell your children not to play with the garden hose. Saves 10 gallons a minute. But do this only in wet years. Even drought resistant plantings take extra water to get them going. That'll save 750 to 1,500 gallons a month.