No plumbing shall be done except under the direct supervision of a master plumber or city licensed contractor when connecting with the public sewer; provided, however, that the building sewer may be constructed (except for connections) by the owner of the buildings or by the sewer or other licensed contractor under the following conditions:
(A) The owner or licensed contractor shall first obtain a permit as required by this chapter;
(B) Before covering or backfilling the building sewer, the owner or contractor must obtain inspection and approval of the building sewer construction by the city inspector designated for such purpose;
(C) In no case shall the owner or contractor be permitted to carry out the construction within street right-of-way or to connect directly to a public sewer lateral or stub and must be done by a city licensed contractor.
(D) In cases where the owner or contractor chooses to construct a building sewer without connecting to either the public sewer or the building drain, the construction shall be permitted if carried out in accordance with this chapter, and provided that at such time as connection is made to either the building drain or a public sewer, there shall be obtained a second permit and inspection and approval of the additional connection by the Building Inspector before the connection is covered or back filled.
(E) In cases where the city inspector has reason to believe that the owner is not competent to do the work contemplated by this chapter, the owner shall demonstrate his or her skill, training, knowledge and experience to the satisfaction of the inspector. In the event the inspector concludes that the owner is not competent, the permit shall stand terminated and revoked until a licensed plumber or contractor is retained.
(Prior Code, § 18.01, Subd. 19)