New & Existing Technologies for Water Conservation, Collection, & Harvesting

Currently, I am consulting as a Resource Efficiency Manager for the US Army. I am looking for existing technologies that I can use to facilitate water conservation. There is the potential for Proof of Concept projects and possibly funding as well. If the technology is proven and in the marketplace already, then there may be additional opportunities. Please send me materials on existing and new technologies for water conservation, collection, and harvesting. Thank you