Water conservation is a key tool used to improve on-site water re-usage, and has been shown substantial improvements in overall water conservation, even in the face of prolonged droughts. The Credit Human Broadway Office Development in San Antonio has one of the largest rainwater harvesting and reclamation systems in Texas, saving more than 4 million gallons a year.

Austin, TX, has implemented a series of rebates and guidelines to improve the rainwater harvesting capacities of residential and commercial buildings.