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r <br />RE: Sewer Backflow Protection <br />Dear <br />You recently made an inquiry regarding sewer backflow protection. The Everett <br />Municipal Code requires all basements with drains or sewers where there exists the <br />unusual danger of "backup" from the public sewer system to lift their discharge by <br />artificial means or install a backwater valve at the outlet. <br />Basement areas susceptible to backup are typically those spaces whose floor elevation is <br />below the elevation of the abutting street or alley and located within the combined sewer <br />area as delineated on the enclosed map. <br />There are two generally acceptable methods to control backup. Enclosed for your review <br />is information concerning the backwater valve and grinder pump systems. Both systems <br />require maintenance by the homeowner with the backwater valve probably requiring more <br />maintenance than the grinder pump system. Both installations require that a permit be <br />obtained from the Public Works Department service counter located on the second floor <br />at 3200 Cedar Street. Installation of a backwater valve requires a $27 plumbing permit. <br />A grinder pump system requires a $30 sewer alteration permit, a $27 plumbing permit, <br />and a $35 electrical permit. <br />We hope this correspondence will help clarify and provide guidance concerning this <br />issue. The licensed plumber of your choice should be able to review your situation, <br />answer your sits specific questions and install the system of your choice with the <br />appropriate permits. <br />Sincerely, <br />Larry Crawford <br />Eng/Pub Svs Director <br />LC:jd:backf1ow <br />CITY OF EVERE:TT• 3200 Cedar Street • Everett, WA 98201 • (425) 257-8800 • =ax (425) 257-8856 <br />