Section 1. Between sections twenty-two and twenty-three of Commonwealth Act Numbered Five hundred and twenty, a new section is hereby inserted to be known as section 22-A, which shall read as follows:
"Section 22-A. There shall be a Waterworks Superintendent, who shall, under the direct supervision of the City Engineer, have charge of the maintenance and operation of the City Waterworks System and shall perform such other duties as may be assigned to him by the City Engineer, or prescribed by law or ordinance. He shall assist the City Engineer, in advisory capacity, during session in the Municipal Board on all matters affecting or relating to the operation of the City Waterworks System and shall assist the City Attorney and/or City Engineer in all hearings in the Public Service Commission in any case arising out of the operation of the Waterworks System. The Waterworks Superintendent shall receive a salary not exceeding four thousand five hundred pesos per annum, chargeable against the Waterworks Fund."