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In any building, structure, or premises in which the house drain is too low to permit gravity flow to the public sewer, the same shall be lifted by artificial means and discharged into the public sewer or into a septic tank according to Snohomish Health District.

Whenever a situation exists involving an unusual number of backups the City Engineer may prescribe a minimum elevation at which the house sewer may be discharged to the public sewer. Sewers below such minimum elevation shall be lifted by artificial means; or if approved by the City Engineer, a check valve may be installed. The effective operation of the check valve shall be the responsibility of the owner of the sewer. Approval of a check valve shall be made only upon the applicant filing with the City an acceptable instrument agreeing to save the City of Snohomish harmless from all damage resulting therefrom. (Ord. 1602, 1987; Ord. 1730, 1993)