compliance
Portland Grease Trap Requirements for Restaurants
Portland's Environmental Services and the Oregon Department of Environmental Quality enforce strict grease trap and grease interceptor standards for food service establishments. Non-compliance can result in fines, closure orders, and environmental violations. Understanding Portland's specific requirements helps restaurants avoid costly penalties and protect the city's sewer infrastructure.
Portland Municipal Code & Local Regulations
Portland requires food service establishments to install and maintain grease traps or interceptors under Portland City Code Chapter 17 and the City's Plumbing Code. The City of Portland Bureau of Environmental Services mandates that grease interceptors have a minimum 750-gallon capacity for most restaurants, though larger facilities may require bigger units. Grease traps must be sized according to peak wastewater flow and are subject to inspection during permits and annual health inspections. All installations must comply with Oregon Plumbing Specialty Code requirements and be certified by a licensed plumber.
Maintenance Schedule & Pumping Requirements
Portland restaurants must pump and clean grease interceptors regularly—typically every 30 to 90 days depending on usage and inspector recommendation. The City tracks maintenance through manifests filed with licensed waste haulers certified to handle grease and used cooking oil disposal. Failure to maintain records of pumping dates and waste contractor certifications is a violation of city code and can trigger enforcement action. Best practice includes scheduling maintenance before the interceptor reaches 75% capacity to prevent overflow, which damages sewer lines and triggers environmental fines.
Inspection & Enforcement by Portland Authorities
Portland's Bureau of Environmental Services and health inspectors conduct routine inspections to verify grease trap compliance. Inspectors check for proper installation, maintenance records, signage, and visible grease buildup or odors indicating poor maintenance. Violations range from notices to correct (typically 10–30 days) to civil penalties starting at $250 per day for non-compliance, with escalating fines for repeated violations. The City can also mandate retrofitting or replacement of non-compliant systems, and sewage backups caused by inadequate grease management may result in liability claims.
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