933.18 USE OF PUBLIC SEWERS.
   (a)   No person shall maliciously, willfully, or negligently break, damage, destroy, uncover, deface, or tamper with any structure, appurtenance, or equipment which is a part of the treatment works.
   (b)   No person shall discharge or cause to be discharged any unpolluted waters such as stormwater, groundwater, roof runoff, subsurface drainage, or cooling water to any sanitary sewer, except stormwater runoff from limited areas, which stormwater may be polluted at times, may be discharged to the sanitary sewer by permission of the City Engineer.
(c)   (1)   Whenever the City Engineer shall find that any provision of subsection (b) hereof is being violated, he shall issue a written order to the person responsible for the removal, elimination, or correction of the condition, to remove the connections or drains from the sanitary sewer within 90 days after service of the order.
(2)   The service of the order, as mentioned herein, may be made upon the person to whom it is directed, either by delivering a copy of same to that person, or by delivering the same to and leaving it with any person in charge of the premises, or by affixing a copy thereof in a conspicuous place on the door to the entrance of the premises.
   (d)   Stormwater other than that exempted under subsection (b) hereof and all other unpolluted drainage shall be discharged to the sewers as are specifically designated as combined sewers or storm sewers or to a natural outlet approved by the City Engineer and other regulatory agencies. Unpolluted industrial cooling water or process waters may be discharged, on approval of the City Engineer and other regulatory agencies, to a storm sewer, combined sewer, or natural outlet.
   (e)   Whenever sewers are about to be or have been constructed for the purpose of carrying off sewage and drainage from lots and lands outside the corporate limits, no permission shall be given nor granted to connect the sewers with the treatment works of the City, nor shall the use of the treatment works be permitted for the sewage and drainage of the lots and lands outside of the corporate limits, unless there shall have been secured written permission from the City Engineer which shall be given only if the sewers or system of sewers for which the connection or use is sought conform to the plans theretofore adopted by the City. A certificate of approval of the sewers by the State Environmental Protection Agency shall also be furnished where, by law, the plans are required to be approved.
   (f)   In addition to the City Engineer's approval as required by subsection (e) hereof, applicants for permission to use or connect with the City's sewer shall execute the agreements as to terms, conditions, and compensation for the use of the sewers and treatment work as shall be required by the City and authorized by ordinance.
(1980 Code 50.20)