(A) A user may not discharge, or cause to be discharged, wastewater into the POTW if it contains substances or has characteristics which, either alone or by interaction with other wastewater, cause or threaten to cause:
(1) Damage to the POTW;
(2) Interference or impairment of operation or maintenance of the POTW;
(3) Obstruction of flow in the POTW;
(4) Hazard to human life;
(5) Interference with treatment plant or disposal processes, including recycling or any reclamation processes;
(6) The POTW effluent or any other product of the POTW, such as residues, biosolids, ash or scum, to be unsuitable for reclamation and reuse. In no case shall substances discharged to the POTW cause the plant to be in non-compliance with biosolids use or disposal criteria, guidelines or regulations;
(7) The POTW to violate is national pollution discharge elimination system (NPDES) permit or the receiving water quality standards;
(8) Flammable or explosive conditions;
(9) A noxious or malodorous condition, a public nuisance, a hazard to life or conditions sufficient to prevent normal entry into the sewers or POTW for maintenance and repair;
(10) Objectionable coloration or other condition in the quality of the POTW’s influent which interferes with or passes through the POTW;
(11) Conditions which violate any statute, rule, regulation or ordinance of any public agency, relating to releases of hazardous wastes, hazardous substances or other pollutants to the environment when such release is to a POTW;
(12) Any alteration or change of the District’s NPDES permit or any additional regulatory supervision, intervention or oversight of the POTW’s operations;
(13) Any alteration of the POTW plant processes; and
(14) Any significant alteration of the POTW operations, including, but not limited to, affecting the ability of the District to procure adequate insurance and/or subjecting the District operations to significantly increase potential liability.
(B) When the General Manager determines that a user(s) is contributing to the POTW, any of the above enumerated substances in such amounts as to interfere with the operation of the POTW, the General Manager shall:
(1) Advise the user(s) of the impact of the discharge on the POTW; and
(2) Develop effluent limitations for such user to correct the interference with the POTW.
(C) The General Manager shall, from time to time, establish quantitative or other limitations applicable to industrial waste discharges when, in his or her judgment, it is necessary to protect the District’s wastewater system or to be in compliance with state or local law or federal regulations. Such limitations shall apply at the industrial wastewater monitoring facility prior to mixing with domestic wastewaters. Wastewater discharges in excess of the limits established by the General Manager or any state law or applicable federal pretreatment standards shall constitute excessive concentrations or quantities prohibited by this section.
(D) The General Manager shall establish quantitative limitations for users which, because of their location, quantity or quality of discharge, can degrade the quality of wastewater treatment plant effluent or residue to a level that prevents or inhibits efforts to reuse or dispose of the water or residue or in causes any unusual operation or maintenance problems in the sewerage system.
(Ord. 2022-02, passed 3-31-2022)