The Carrizo-Wilcox Aquifer in southern Bexar County, Texas is a sandstone, water-bearing unit comprised of the Carrizo Sand Formation and underlying Wilcox Group. In particular, brackish groundwater is available from the Wilcox Group of formations. This confined aquifer system occurs in an area that produces water suitable for public supply, membrane-filtration water treatment. The San Antonio Water System (SAWS) embarked upon a brackish desalination program within this aquifer to create the 2nd largest Desalination project in the Texas at 12 MGD capacity. The project will produce more than 13,440 acre-feet of source water from the Wilcox Aquifer. The groundwater will then be treated through a membrane filtration plant with finished water going to distribution and concentrate to be disposed in deep injection wells. Concentrate brine will be produced as a by-product of the desalination process which will require multiple Class I Injection wells for the disposal of the concentrate.