Council shall have the power to enact, make, adopt, modify, repeal and enforce, in accordance with this part, ordinances, resolutions, rules and regulations not inconsistent with or restrained by the Constitution of Pennsylvania and laws of this Commonwealth that are either of the following: (1) Expedient or necessary for the proper management, care and control of the city and its finances and the maintenance of the peace, good government, safety and welfare of the city and its trade, commerce and manufactures. (2) Necessary to the exercise of the powers and authority of local self-government in municipal affairs.
Pennsylvania Legal Code