Avoid watering during the heat of day or during times of wind. This will reduce water loss to evaporation.
It is better to water during the heat of the day then when there is wind because wind will evaporate water 6 times faster than the sun.
As the weather changes adjust your watering schedule accordingly.
Aerate your lawn to increase the amount of water the ground soaks in. This is best done in the spring or fall.
Water your lawn separately from other landscaped areas.
Invest in a rain switch or moisture sensor.
Place mulch in planting beds to reduce evaporation.
Leave small grass clippings on the lawn as a nutrient source or invest in a mulching lawn mower.
Fertilize lawn in the late fall with a slow release fertilizer. Do not over fertilize.
Use hardscape landscaping such as patios, walks, statuary, pavers, etc.
Plant drought resistant trees and plants. Ask a local nursery about Utah-friendly landscape materials.
Control weeds. Weeds use a lot of water.
Increase the mowing height of your lawn mower. Longer grass grows deeper roots, uses less water and stands the stresses of hot dry weather better.
Use a shut-off spray nozzle on your hose to wash the car.
Clean driveways, patios and decks with a broom instead of a hose.
Check for leaks. A leaking sprinkler system or hose bib can waste a significant amount of water. To check for leaks turn everything off that uses water. Check your pressurized irrigation meter and write down the current reading (include tenths of a cubic foot). Then check the meter again after one hour. If the meter has changed you have a leak.
The following web sites will give you more information on water conservation: