Chicago Department of Water Management / Plumbing Code; CDPH food inspections
Not legal advice. Last verified 2026-09-21 · confidence medium. Confirm with the city before you set a contract.
Minimum interval: No fixed calendar interval in the sources we cited.
Accumulation rule: Chicago plumbing code requires interceptors to be maintained 'as often as necessary' — not a fixed 90-day clock. Keep written maintenance records for the life of the unit or at least 5 years, whichever is longer.
Records: keep required records about 5 years on site.
Hauler: Use a licensed waste hauler and keep manifests.
Permit: Food establishments are inspected by CDPH. Interceptor rules sit in the plumbing / water code.
Enforcement: Food inspection failures (pests, grease, sanitation) are public. Plumbing/FOG citations are separate. Confirm current penalties.
NFPA 96 frequencies (widely republished by fire departments): solid fuel monthly; high-volume quarterly; moderate semiannual; low-volume annual. Insurers and local fire inspectors can be stricter.