 Processing these food contaminants raises the cost of treating wastewater.The Pretreatment Program protects the treatment process and keeps costs down by working with local businesses to minimize pollutant discharges.Activities of the city's Pretreatment Program include the review of pretreatment designs, the issuance of permits, facility inspections, monitoring of facilities (wastewater sample collection), review of industry self-monitoring reports, and enforcement activities.