VII. Sewer Disposal of Wastes
Disposal of waste to the sewer system is limited to non-hazardous, water-soluble materials. As defined by the EPA, any materials that are specifically listed as hazardous or that display the characteristics of flammability, corrosivity, reactivity, or toxicity are not permitted for sewer disposal (Appendix A).
In addition, City of Portland Ordinances prohibit or limit discharge of hazardous waste to the sewer system (Appendix A). To meet of the objectives of Section 17.34.040 of the City Code, the Industrial Pretreatment Administrative Rules show the concentration of pollutants allowed for discharge in wastewater (Appendix A).