35 Pa. Stat. § 4013
A violation of this act or of any rule or regulation promulgated under this act or any order, plan approval or permit issued by the department under this act shall constitute a public nuisance. The department shall have the authority to order any person causing a public nuisance to abate the public nuisance. In addition, the department or any Commonwealth agency which undertakes to abate a public nuisance may recover the expenses of abatement following the process for assessment and collection of a civil penalty contained in section 9.1. Whenever the nuisance is maintained or continued contrary to this act or any rule or regulation promulgated under this act or any order, plan approval or permit, the nuisance may be abatable in the manner provided by this act. Any person who causes the public nuisance shall be liable for the cost of abatement.
35 P.S. § 4013