Section 4
SEC. 4. Except as provided in section five hereof, the district engineer of the province concerned shall be in charge of the operation of the waterworks systems constructed under this Act subject to such regulations as may be promulgated by the Director of Public Works and approved by the National Waterworks Board, and to the provisions of Act Numbered Thirty-nine hundred and seventy-eight. The necessary personnel for the maintenance and operation of systems shall be appointed by the Director of Public Works with the approval of the Secretary of Public Works and Communications, and the cost of such maintenance and operation, including the salaries of the necessary personnel, shall be charged against the receipts and collections from the said system.