(1) The owner of any premises shall efficiently maintain repair, cleanse and keep clean, the entire plumbing system and all private sewers on such premises up to but not including the sewer connexion, and shall clear all obstructions in sewer connexions.

(2) In all cases where any person makes, alters or otherwise deals with any sewerage or drainage system in such a manner as to contravene any of these by-laws, or allows or causes any portion of the sewerage or drainage system, for the proper maintenance of which he is responsible, to fall into bad or defective condition , or to become obstructed, such person on receiving notice from the local authority, shall remake, alter, repair, cleanse or remove any obstruction from such sewerage or drainage system within such period as is specified by the notice.

(3) Where the premises of more than one owner are served by a combined private sewer, the owners shall be jointly and severally responsible for maintaining, cleansing or repairing such combined private sewer.