Is it possible to take the rainwater and use it by collecting it on rooftops, gutters and concrete and allow it to flow into local reservoirs on the property to use once more? Indeed that would conserve water for places with severe droughts wouldn't it? Sure it would and it would indeed make since in the Middle East, Arid Regions and of course in Australia with their big droughts too.

One idea I had was to put one in a Bus Stop, collect water runoff from buildings into the structure and whatever hit the top of it, then use it later after going thru filters to steam clean sidewalks without hooking up to city water you see?

http://worldthinktank.net/wttbbs/index.php?
s=0c88016c6b5421f8d4ff9196582a6028&showtopic=347

By conserving water as human populations grow and the land mass heats up in some places we can re-vitalize our civilizations and prevent hardships of limited flows in our civilization by using such methods to assist us.

Today we have many entrepreneurs designing rooftop gardens using the natural rainfall rather than allowing the water to escape become polluted and become wasted on the streets below. Conserving water is smart so today when our online think tank was asked; "Can We Recycle Rain Water to Use Again in Cleaning Operations?" the answer came back yes, well, yes we can! We can use this water in many ways and with a little filtering we can even use it for cleaning our cities. Consider all this in 2006.