In 2002 the Central Oklahoma Water Authority looked into pumping water from the Arbuckle-Simpson Aquifer to cities outside the area. This aquifer is located in south central Oklahoma, where from which several communities get portions of their water supply.
The Blue River is one stream that is fed in part by the groundwater from the aquifer. Oklahoma law considers groundwater to be private property, so it can be extracted for use by any landowner who resides in the area of the aquifer.
However, concern over the potential effects of pumping large amounts of water away for use in other communities led to legislative action, which put a moratorium on permits to extract water for use outside of the county where the aquifer is located.
This will last until it can be determined how much water can be removed without negatively affecting streamflow in the area’s rivers and streams (OWRB 2003). (Source)