No one, other than an authorized employee of the city or a city-approved contractor, shall perform or cause to be performed any work in relation to the city’s sewer utility and within the public right-of-way or utility easement. (Ord. No. 73, § 3, 4-6-77; Ord. No. 417, 7-15-97; Ord. No. 461, § 3, 12-21-99; Ord. No. 2008-09, § 5, 8-19-08. 1976 Code § 11-2-10)