(a) The county government may contract with any municipality within the territorial limits of the County for the disposal or treatment by means of any sewerage system of the County or municipality the sewage originating in such city or town or elsewhere. Any such contract may be authorized by resolution duly adopted by the county government and may be made with or without consideration and may contain provisions obligating the County or municipality to dispose of and treat all or any part of the sewage originating in such city or town or elsewhere and obligating such city or town to permit the County to dispose of or treat such sewage, either for a specific period of time or for an unlimited time. Any such contract may contain other and different provisions relative to the kind and character of sewage to be disposed of and treated and the compensation, if any, to be paid for such services.
(b) The county government may contract with any municipality within the territorial limits of the County to buy, sell, process, filter, treat or purify water. Such filtration, treatment, processing or purification may be done in any plant or facility of the County or the municipality for such time, on such terms, and in such volume as the county government may, by resolution, determine.