City of Fort Worth Water — Pretreatment / Grease Traps
Not legal advice. Last verified 2026-09-23 · confidence high. Confirm with the city before you set a contract.
Minimum interval: 90 days.
Accumulation rule: Completely empty at least once every ninety (90) days, or more often if required to protect the wastewater system. The city grease-trap program page does not state a 25% accumulation trigger.
Records: keep required records about 5 years on site.
Hauler: City-authorized liquid waste transporters only; use city trip tickets.
Permit: Food establishments need a restaurant wastewater discharge permit before discharging to the sanitary sewer (Chapter 12.5 Article VII / §12.5-731).
Enforcement: The city grease-trap page describes penalties of up to $2,000 per violation per day. Confirm current amounts with Pretreatment.
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.