53 Pa. Stat. § 25986
And all other acts or parts of acts of Assembly of this Commonwealth, general, special or local, appertaining to the subject-matter covered by this act, be and the same are hereby repealed. It being the intention that this act shall furnish a complete and exclusive system in itself, so far as relates to the practice of levying and assessing taxes and water-rents, or rates, and the procedure with reference thereto, the right to which accrues after January one, one thousand nine hundred and twelve.
This act shall not be construed to in any way affect or impair the right of any of such cities to collect any taxes or water-rents, or rates, which shall have been heretofore levied and assessed, or which may be levied and assessed prior to the first day of January, Anno Domini one thousand nine hundred and twelve; and, for the purpose of enforcing the collection of the same, all acts of Assembly, or parts thereof, now in force, authorizing the levying and assessing of said taxes and water-rents, or rates, shall be deemed in law to continue in existence.
53 P.S. § 25986