Oregon Grease Trap Regulations
FOG Compliance Overview
Oregon follows the Uniform Plumbing Code (UPC) as its base plumbing code. The UPC requires grease interceptors for commercial kitchens and uses fixture unit calculations for sizing requirements. The state's regulatory authority is the Oregon Department of Environmental Quality (DEQ).
With approximately 11,223 food service establishments statewide, Oregon has significant FOG compliance needs. Individual cities and municipalities may adopt additional local ordinances that go beyond the state plumbing code, including stricter pumping schedules, permit requirements, and enforcement penalties. Of the 4 cities we cover, 3 require a dedicated FOG permit. 2 cities enforce the 25% rule for grease trap pumping.
Need a grease trap in Oregon?
Our free calculator uses UPC code requirements to recommend the right size for your establishment.
Size My Grease TrapCity Regulations in Oregon
| City | Pumping Frequency | Permit | 25% Rule |
|---|---|---|---|
| Bend | City-set cleaning schedules (specific frequency varies ... | Required | — |
| Eugene | Grease traps may require weekly cleaning; grease interc... | Required | Yes |
| Portland | Every 90 days minimum; must be pumped when grease and s... | Required | Yes |
| Salem | See details | — | — |
Frequently Asked Questions
What plumbing code does Oregon follow for grease traps?
Oregon follows the Uniform Plumbing Code (UPC). The UPC requires grease interceptors for commercial kitchens and uses fixture unit calculations for sizing. Individual cities may adopt stricter local ordinances.
How many food service establishments are in Oregon?
Oregon has approximately 11,223 food service establishments according to Census Bureau County Business Patterns data. We currently cover detailed FOG regulations for 4 cities in the state.
Do I need a grease trap permit in Oregon?
Permit requirements vary by city. Of the 4 cities we cover in Oregon, 3 require a dedicated FOG permit. Check your specific city's requirements below or contact your local wastewater authority.
What size grease trap do I need in Oregon?
Grease trap sizing in Oregon depends on your establishment's flow rate, number of fixtures, and local code requirements under the UPC. Use our free sizing calculator for a recommendation tailored to your setup.
Regulations change frequently. Always verify current requirements with your local wastewater authority or plumbing inspector before making compliance decisions. Last updated: March 2026.