Any user which discharges any toxic pollutants which cause an increase in the cost of managing the effluent or the sludge from the city’s treatment works, or any user which discharges any substance which singly or by interaction with other substances causes identifiable increases in the cost of operation, maintenance or replacement of the treatment works, shall pay for such increased costs. The charge to each such user shall be as determined by the responsible plant operating personnel and approved by the governing body.
(2010 Code, § 15-438)