Water early in the morning to decrease evaporation and the risk of disease. A container with a one-inch mark placed under your sprinkler will help you determine the amount of water your lawn is using. Established lawns can survive several weeks of dormancy during the summer. Excess water can keep the soil too moist, which damages roots. This shades the soil surface thus reduces evaporation and the sprouting of weeds.
Proper fertilization promotes deep roots and drought tolerance.
Otherwise, it may have the opposite effect. It is better to fertilize in the fall as fertilization during this time promotes root growth versus fertilization in the spring which is more likely to promote leaf growth. Plan and develop a landscape that has less lawn and requires less water and maintenance. Plant drought tolerant species of plants and use organic mulches that soak in the water. Native plants will show a greater affinity to the various types of climate in this area.