Grease Trap Requirements
Ann Arbor, MI
FOG compliance regulations for food service establishments in Ann Arbor, Michigan.
Check locally
Pumping Freq.
Check locally
Permit
Yes
25% Rule
UPC
Code Base
Pumping Requirements
Frequency Contact local authority
25% Rule Applies
Permits & Enforcement
Permit Required Contact authority
Complete FOG Regulations
| Pumping Frequency | Contact local authority for requirements |
|---|---|
| 25% Rule | Yes — trap must be pumped when grease and solids reach 25% of capacity |
| Permit Required | Contact authority |
| Record Keeping | Required — maintain pumping logs and manifests on-site |
| Plumbing Code | Uniform Plumbing Code (UPC) |
| Ordinance Ref. | Ann Arbor Code of Ordinances Title II, Chapter 28 (Sewage and Sewage Disposal) |
| Authority | City of Ann Arbor Public Services / Washtenaw County Health Department |
Additional Notes
Michigan follows the International Plumbing Code for grease interceptor sizing (IPC Chapter 10). FOG and solids content should not exceed 25% of device capacity. Indoor grease traps require more frequent maintenance due to smaller size. Specific local FOG ordinance details should be confirmed with the city.
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
Phone (734) 222-6860
Environmental Services - Water Resources: (734) 222-6860
Official Sources
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