53 Pa. Stat. § 4669
Any person or persons who shall fail to comply with any of the provisions of this act, regarding the procuring of a license or certificate to engage in or work at the business of plumbing, house or building drainage, shall be liable, upon conviction for a first offense, to a fine of not less than ten dollars ($10.00), nor exceeding fifty dollars ($50.00), for each and every day he or they shall engage in or work at said business without first having obtained said certificate or license, and for a second offense in a like manner to a fine of not less than twenty dollars ($20.00), nor exceeding one hundred dollars ($100.00), for each and every day, and for a third offense to a like fine as for a second offense, or to imprisonment in the county jail for a period not exceeding thirty days, or both, in the discretion of the alderman, justice of the peace or magistrate, together with costs of prosecution in each case; and any person or persons who shall violate any of the rules, regulations, or requirements set forth in this act, regarding the construction, reconstruction or testing of plumbing, house and building drainage, or cesspools, or water connections to private or public fixtures or equipment, shall be liable, upon conviction, for a first offense, to a fine of not less than ten dollars ($10.00), nor more than fifty dollars ($50.00), and for a second offense to a fine of not less than twenty dollars ($20.00), nor exceeding one hundred dollars ($100.00), and for a third offense to a like fine as for a second offense, or to imprisonment in the county jail for a period not exceeding thirty days, or both, at the discretion of the alderman, justice of the peace or magistrate, together with cost of prosecution in each case.
All prosecutions for violations of this act shall be, by summary proceedings, brought in the name and for the use of the municipality or the Commonwealth, as the case may be, within or against which the alleged offense is committed, before any alderman, police magistrate, or justice of the peace in the county wherein the offense is alleged to have been committed. All fines and penalties shall be paid to the treasurer of the municipality to apply to general fund, or to the Commonwealth for the use of the Department of Health, as the case may be. In default of the payment of any fine or penalty imposed by any alderman, police magistrate, or justice of the peace, under the provisions of this act, the person or persons so offending shall be committed to the jail, workhouse, or other penal institution of the county for a period not exceeding thirty days: Provided, however, That in the case of third offense, such period, not exceeding thirty days, may be added to the sentence of imprisonment.
53 P.S. § 4669