Grease Interceptor — Detroit Water and Sewerage Department (DWSD)
Detroit restaurants must install a grease interceptor under DWSD's FOG program; Detroit's combined sewer makes grease control a strict compliance priority.
What it is. A properly sized grease interceptor to keep fats, oils, and grease out of the sewer, required under the Detroit Water and Sewerage Department (DWSD) FOG program and Michigan pretreatment rules (EGLE). Detroit operates a combined sewer system, so excess grease contributes to overflows — DWSD actively enforces FOG compliance.
Who issues/enforces it. Detroit Water and Sewerage Department (DWSD) FOG / pretreatment program (City layer).
When you need it. Any restaurant discharging FOG; the device is installed during build-out.
How to comply. Install a compliant, correctly sized grease interceptor and maintain it per DWSD requirements.
Fees. Per DWSD — see source (⟢ VERIFY).
What SpoonSeal tracks. The document(s) you upload for this requirement, with automatic renewal/expiration tracking (Current, Due Soon, Expired). Where the city publishes health-inspection results (e.g., NYC and Chicago), SpoonSeal syncs them automatically; elsewhere they can be added manually.
References
- City of Detroit — Detroit Water and Sewerage Department — https://detroitmi.gov/departments/detroit-water-and-sewerage-department — Official source last checked: 2026-07-02
Stay ahead of this requirement
SpoonSeal stores your documents, tracks expirations, and reminds you before anything lapses — so you are always inspection-ready.
Get started free →This guide is informational and not legal advice. Always confirm current requirements with the official agency linked above.