A County Water Supply Authority shall have the right and power to supply, furnish and sell water or water service for public or private use to persons, partnerships, corporations, authorities, water companies, municipalities, governmental subdivisions of this Commonwealth or any of their agencies either within or without the territorial limits of the county or counties which organized the Authority. In so doing, it shall not compete with an existing enterprise providing the same service, nor shall the organization of such an authority preclude the subsequent incorporation of privately-owned water supply companies to serve areas not being served by the authority.
16 P.S. § 12913