A. Drainage Piping Serving Fixtures. Drainage piping serving fixtures, the flood level rims of which are located below the elevation of the curb or property line, at the point where the building sewer crosses under the curb or property line, and above the crown level of the main sewer, shall drain by gravity into the main sewer, and shall be protected from backflow of sewage by installing an approved type backwater valve, and each such backwater valve shall be installed only in that branch or section of the drainage system which receives the discharge from fixtures located below the elevation of the curb or property line. If the drainage piping is lower than the next upstream manhole, the property owner must install a backwater valve.

B. Director Empowered to Stop Overflow. If the property owner fails to install and maintain a backwater trap or backwater valve in good working condition, when required under this section, the director may order and require the plumbing fixture to be disconnected and removed and the outlet plugged or capped. In the event that the property owner fails to disconnect and plug or cap the sewer connection within ten days after written notice by the director, then the director shall arrange for such disconnection and capping, the cost of which may be collected by court action or may be declared to be a lien by action of the council after public hearing and notice of the property owner and shall be added to and collected as part of the tax roll.

C. Alternate Right to Terminate Water Service. As an alternate to the procedure set forth in subsection B of this section, if the property owner fails to install and maintain a backwater trap valve in good working condition when requested under this chapter, the director may order and require termination of water service to the parcel and all structures connected to the sewer outlet subject to overflow. The water service shall not be reinstated until the maintenance or installation of the backwater trap or backwater valve has been approved by the director.

D. Maintenance of House Sewer Connections. Maintenance of house sewer connections shall comply with Section 13.08.395(B). (Ord. 1704 § 15, 2021; Ord. 1665 § 2, 2019; Ord. 1598 § 1 (part), 2014)