140804-F-ZZ999-030
Engineers at Hurlburt Field, Fla., expanded and improved the installations graywater distribution system to reduce demand on teh lcoal water supply. Forty-thousand feet of new piping and a 500,000 gallon storage tank help the base save 13 million gallons of potable water a year formally used for industrial and irrigation needs. (U.S. Air Force photo)