All proceedings had and all elections held in any sanitary district of the Commonwealth prior to June 30, 1954, whether under general law or by special act, to provide for and in respect to the contracting of bonded indebtedness and the authorization, issuance, sale, execution, and delivery of bonds by or on behalf of such district prior to June 30, 1954, whether under general law or by special act, are ratified and confirmed, notwithstanding the lack of power of the governing body of the county in which such district is located to authorize and issue such bonds or to execute, sell or deliver the same, and notwithstanding any defects or irregularities in such proceedings or elections concerning such execution, sale, or delivery, and notwithstanding any curable unconstitutionality of a procedural character, such as failure of the act to conform to the title and such other constitutional questions; and such bonds so issued or to be issued are and shall be binding, legal, valid, and enforceable obligations of such sanitary district.