Xeriscaping

I've been seeing this word floating around and just found on inhabitat.com that it was coined by the Colorado Water Wise Council. "Why Xeriscape? For most of the western United States over fifty percent of residential water used is applied to landscape and lawns. Xeriscape can reduce landscape water use by 60% or more." The water use for house and land is a big concern for us and we are hoping to find a water plan that will use grey water, rain barrels etc. but there's so much more to learn.