24 Pa. Stat. § 25-2565
When any school district of the fourth class receiving pupils from other districts is required by the city, borough or township within which its school building or buildings are located, or any municipality authority operating therein, to pay a service charge for sewer connection or a sewer rental measured by the number of pupils attending such school or schools, such receiving district shall include in its bill for tuition charge to each sending district, and the sending district shall pay, the amount of such per pupil sewer service charge or sewer rental for each pupil sent by the sending district. Such charge shall be in addition to the tuition charge provided for by section two thousand five hundred sixty-two of the act to which this is an amendment. In cases where pupils are sent and the tuition charges paid by the parents or other persons to such receiving districts, the parents or other persons shall pay such per pupil sewer charge or sewer rental.
24 P.S. § 25-2565