In addition to any authority granted in any state or local act pertaining to the Water Works Board of the Town of Pennington in Choctaw County, the members on the board may reside in any area served by the Pennington Water Works Board, whether it be within or without the city limits of the Town of Pennington, and in addition, the members may be appointed, regardless of their place of residence, who are members of any water authority that purchases water from the Water Works Board of the Town of Pennington.