This study evaluated the possibility of implementing a proposed cap and trade policy on water use in the Texas Southern High Plains. The results suggested that the decision of producers to enroll in a cap and trade policy introduced under a restricted 50/50 management plan, will be impacted by water levels in the aquifer and subsequently the viability of pumping irrigation water in the future. It is to be realized that while polices like these will have a definitive impact on the crop-mix and farm income of the region, they could still serve as useful tools to promote long term conservation of groundwater resources in the region.