Every dwelling or rooming-house accessible to a sewer shall be connected therewith. All privy-vaults or cesspools and school sinks shall be removed from the premises of any dwelling or rooming-house after a sewer has been laid in a contiguous street. No building shall be used as a tenement unless it is sewer connected, and all cesspools, privy-vaults, and school sinks shall have been removed from the premises thereof.
53 P.S. § 14964