(1) Where a soil-water fitting is removed, all pipes thereby thrown into disuse shall be removed, or all openings shall be effectively and durably sealed. The owner of the premises upon which such work is carried out, shall, after its completion, notify the local authority thereof writing.

(2) Where so required by the local authority, the owner of any premises shall, at his own expense, effectively seal the opening of any sewer or drain situated on his premises, and shall maintain such seals until permission for their removal has been given, in writing, by the local authority.