The Mayor and City Council of Baltimore and the County Commissioners of Baltimore County are hereby authorized to enter into an agreement containing such rules and regulations as they may think proper for the maintenance, repair and protection of said connections and meters and for the examination and inspection of said meters, but said agreement shall not relieve said County Commissioners of the obligation to pay for such connections and meters and for their repair or replacement. P.L.L., 1927, §910 1938, §1190 1949, §786 1969, §25-25 1922, ch. 289