No one shall deposit or permit to be deposited in any sewer connected with a public sewer any garbage, hair, ashes, foodstuffs, rags, automobile oil or grease or any other thing whatsoever except feces, urine, necessary closet paper, liquid housewater and domestic garbage processed by an approved disposal unit. Further, no one shall permit or allow the roof drain on any structure to drain into the sewage system. (Ord. 603 (part), 2004: prior code § 5-109)