In dry climates like this one, water conservation isn't just a good idea - it's essential as usable drinking water becomes more scarce in the coming decades.
Earlier this year, the city of Tucson, Arizona passed an ordinance that will require new home construction to include waste systems that allows recycling of what's called "graywater". That's the water that flows down the sink, shower and washing machine drains. Although it's not safe to drink, it can be perfectly reusable for irrigating lawns and gardens, as well as for other household uses. The homes will get rid of soap and other pollutants by using filter systems like this BRAC system, which recycles graywater and sends it back to your toilet tank.
Smaller amounts of graywater can also be safely collected around the house.
The EPA estimates that an American household of four can use up to 400 gallons of fresh water each day - recycling graywater can be an important part of reducing that burden. Check your state and city's regulations about graywater to find out how you can make your water work for you - time and time again.