Grease Trap Requirements
Portland, OR
FOG compliance regulations for food service establishments in Portland, Oregon. Serving 3,044 food service establishments.
Pumping Requirements
Permits & Enforcement
Complete FOG Regulations
| Minimum Trap Size | 1,000 gallons minimum for gravity grease interceptors; hydromechanical grease interceptors sized per Oregon Plumbing Specialty Code fixture unit ratings (minimum 20 GPM) |
|---|---|
| Pumping Frequency | Every 90 days minimum; must be pumped when grease and solids reach 25% of interceptor capacity |
| 25% Rule | Yes — trap must be pumped when grease and solids reach 25% of capacity |
| Permit Required | Yes |
| Permit Fee | No separate annual FOG permit fee; food service establishments must register with BES |
| Maximum Fine | $10,000 per violation per day under city code |
| Inspections | Annual inspections by BES Grease Inspectors; new FSEs inspected within first 6 months |
| Record Keeping | Required — maintain pumping logs and manifests on-site |
| Plumbing Code | Uniform Plumbing Code (UPC) |
| Ordinance Ref. | Portland City Code Title 17 - Public Improvements, Chapter 17.34 - Sewers and Drainage; Oregon Plumbing Specialty Code (based on UPC) |
| Authority | City of Portland Bureau of Environmental Services (BES) - Grease Interceptor Management Program |
Additional Notes
Oregon follows UPC-based plumbing code (Oregon Plumbing Specialty Code). Portland BES operates a dedicated Grease Interceptor Management Program with grease inspectors. FSEs must have a maintenance contract with a licensed grease hauler. All maintenance records and manifests must be kept on-site for inspection. Portland has an active inspection and enforcement program. Contact: (503) 823-7993 or (503) 823-7093 for Grease Inspector; ali.dirks@portlandoregon.gov
Regulations change frequently. Always verify current requirements with your local wastewater authority or plumbing inspector before making compliance decisions. Last updated: March 2026.
Contact Information
503) 823-7993 or ali.dirks@portlandoregon.gov. (503) 823-7093 to speak with a Grease Inspector
Official Sources
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