The provisions of any other law, or rules and regulations adopted pursuant thereto to the contrary notwithstanding, any contracting unit may enter into a contract with a vendor for the financing, designing, construction, operation, or maintenance, or any combination thereof, of a wastewater treatment system, or for wastewater treatment services, pursuant to the provisions of this act. L. 1985, c. 72, s. 4, eff. March 11, 1985.