All side sewers shall be laid on not less than two percent grade. There shall be not less than thirty inches from any foundation wall of any building, and, if there be no foundation wall, not less than thirty inches from the outer lines of any footings, pilings or building supports; shall have not less than sixty inches of cover at the curb line, or, in a public alley, thirty inches of cover at the property line, and eighteen inches of cover on the private property. No side sewer which is laid generally parallel to the curb or curb line shall have less than forty-eight inches of cover between the curb or curb line and the sidewalk or sidewalk line of less than thirty inches of cover between the sidewalk or sidewalk line and the property line. All cover measurements shall be based on the established grade, or on existing improvements, or shall be approved by the City Engineer. No side sewer shall be less than six inches in diameter in public area except as otherwise specified in the City’s “standard plans and specifications”. Wherever a storm sewer is available, downspouts shall be connected therewith in a manner approved by the City Engineer; but such requirement shall not apply to the connection of any downspout with a sanitary sewer which is hereby prohibited and is unlawful. Not more than one building shall be connected to a side sewer except by permission of the City Engineer. Any one single-family residence shall be connected with not less than four inch diameter pipe and any multiple dwelling, industrial or commercial building, or group of two single-family residences shall be connected with not less than six inch diameter pipe.

All vaults or privies shall be disinfected and filled with fresh earth. All septic tanks, cesspools and similar installations shall be disinfected and filled with fresh earth at the time of the discontinuance of the use thereof. (Ord. 208 § 23, 1957).