16 Pa. Stat. § 5188
The provisions herein and the regulations made hereunder shall not be taken or deemed to repeal existing municipal ordinances, or to prevent municipalities from enacting and enforcing new ordinances for the further protection of the public health: Provided, That the provisions herein shall be considered as establishing minimum requirements and regulations, and that nothing herein contained shall be deemed to prevent municipalities from ordaining and enforcing such additional requirements, in excess of the requirements and regulations hereunder, as may be deemed necessary from time to time for the preservation of public health, and to require applications from, and to issue licenses to, such persons as may be defined by local ordinances.
16 P.S. § 5188