Deep soak your lawn. Water about one inch once a week (twice if it's very hot for several days). Water infrequently, but thoroughly, so moisture soaks down to the roots. This creates deeper, healthier root systems that are more water-efficient and drought-tolerant.

Water early in the morning or late in the evening to reduce evaporation. Avoid watering on windy days. Position sprinklers so water doesn't land on paved areas and run off into storm drains.

Help soil hold water. Add organic materials such as compost or peat moss. Keep your lawn and garden weed-free. Weeds can rob plants of water and nutrients. Lay mulch three inches deep around trees and plants to retain moisture, slow evaporation, and discourage weed growth.

Consider installing drip irrigation systems around trees and shrubs. These systems allow water to flow slowly to the roots, encouraging strong, deep root systems. Drip systems also reduce evaporation.

If you don't have an automatic sprinkling system, use a kitchen timer or buy a sprinkler timer. You can waste a lot of water in a short time if you forget to turn off the sprinklers.