Columbia Treatment or flow control may be required ordinance (§ 22-216.2)

In cases where the director determines that wastes may be deleterious to the POTW or have an adverse effect upon the wastewater treatment process or the receiving stream, or body of water, the director may require treatment to reduce the total suspended solids, BOD or other constituents to levels more closely approaching those of normal wastewater before discharging such wastes into the city sewers. The director may also require any contributor to control its discharge to the public sewers so that it will not exceed a maximum percentage of the total flow in a sewer or to a treatment facility.