Plant native and other shrubs that don't need a lot of watering. Consider alternatives to big thirsty lawns. Re-using water is a good idea. Some cleaning water and pool water is fine for watering lawn and garden. Car Rinse car once, wash from bucket of soapy water, rinse quickly again.
Used water is fine for chrome, hub caps, wheels.
Pool Keep level low to minimize splashing. Washing Hands 2 gallons tap running 1 - 2 gallons tap running During hot, dry conditions, general water consumption for bathing, laundry, and overall water usage increases. During dry conditions, customers generally water lawns and gardens more frequently. Also, usage due to washing cars, home maintenance, pools or playing in sprinklers, and general outside activities increases.