53 Pa. Stat. § 22561
The Department of Public Works shall be under the charge of one director, who shall be the head thereof.
Water works, gas works and electric light plants, owned and controlled by the city; the supply and distribution of water and gas; the grading, paving, repairing, cleaning and lighting of streets, alleys and highways; the construction, protection and repair of public buildings, bridges and structures of every kind for public use, public squares, real estate (except such as now or hereafter may be used for educational or police purposes, fire engine houses, almshouses, hospitals, pest houses and grounds), surveys, engineering, sewerage, drainage and dredging, and all matters and things in any way relating to or affecting the highways, footways, wharves and docks of the city, shall be under the direction, control and administration of the Department of Public Works. All laws relating to parks and condemnation of land for park purposes are to remain in full force.
53 P.S. § 22561