A green lawn is a suburban ideal that drinks more than 20,000 gallons of water each year.
You can keep those cool blades under your feet and save water by planting drought-resistant varieties. Bermuda and buffalo grass, for instance, require 20% less water than fescue or bluegrass, according to the University of California Cooperative Extension.
Keep grass long to shade roots and retard evaporation. Mow less often; and when you do, raise the height of your mower blade to 3 inches.