Section 4
SEC. 4. Section nine of Act Numbered Twenty-eight hundred and thirty-two, as amended by Act Numbered Forty hundred and seventy-nine, is further amended so as to read as follows: "SEC. 9. Possession by the District of all sewer and water . systems within its territory; charging and collection of uniform rates.—The Metropolitan Water District shall own and control all the sewer and water distributing systems of the City of Manila and of the municipalities comprising the District and shall charge and collect a uniform rate for all services rendered, whether to any person, corporation, firm, government body, municipal entity, religious or charitable institution: Provided, That the Public Service . Commission shall exercise no control, supervision or jurisdiction whatsoever over the Metropolitan Water District whether in the promulgation of rules and regulations, in the fixing of rates or over its properties."