INDUSTRIAL WASTEWATER PRETREATMENT NOTICE OF INDUSTRIES IN SIGNIFICANT NON-COMPLIANCE (SNC) FOR THE YEAR 2015. The City of Wilsonville’s Industrial Pretreatment Program protects the City’s wastewater treatment system and the health and safety of workers in the wastewater treatment process. Federal regulations mandate the establishment of the pretreatment program, including the issuance of Wastewater Discharge Permits …