All sewers, mains, laterals and house plumbing shall be plugged with test plugs or a tile plug cemented in the end of the tile. Plugs shall remain in place until the Building Inspector or the Superintendent of Water and Sewer Department or his agent gives permission to remove the same. Anyone removing plugs without City permission shall be deemed guilty of violating this section. (Ord. 982. Passed 6-17-68; Ord. 91-10. Passed 4-15-91.)