In the laying out, opening, widening, extending, vacating, grading or changing the grades or lines of streets or highways, the construction of bridges and the piers and abutments therefor, the construction of slopes, embankments and sewers, including storm water drains, the erection and extension of waterworks, wharves and docks, public buildings, public works, lands and places for the disposal of ashes and other refuse materials, garbage treatment works and libraries, the establishing of parks, playgrounds and recreation places, the changing of watercourses, and for all other purposes authorized by this act, a township of the first class may enter upon, appropriate, injure or destroy private lands, property and material.
53 P.S. § 56901