Food Truck Grease Trap Maintenance: Compliance & Best Practices

Grease Trap Requirements & Sizing

Local health departments and environmental agencies (often coordinated through state environmental quality offices) set minimum grease trap capacity based on your food truck's daily water usage. The general rule: interceptors must hold at least 25% of your peak hourly wastewater volume, though some jurisdictions require 40% capacity. Undersized traps lead to FOG bypass, which triggers sewer system violations and county-level enforcement. You'll need documentation of your trap's capacity to show inspectors—keep sizing calculations and installation records accessible. Most food trucks require 35–50-gallon interceptors, but this varies by state and local codes.

Maintenance Schedule & Common Mistakes

Grease traps must be pumped before they reach 25% capacity—not when they're full. The typical schedule is every 1–2 weeks for high-volume food trucks, verified by your waste hauler's service records. A critical mistake is waiting until buildup causes backup into your sink or cooking area; this triggers health code violations under FDA guidelines and state sanitation codes. Never pour grease down the drain or use chemical dissolvers as a shortcut; these damage municipal treatment plants and can result in EPA fines. Keep dated maintenance logs showing pump-out dates, contractor information, and weight of waste removed—inspectors routinely request these during routine and complaint-driven inspections.

Staying Compliant & Avoiding Citations

Register your grease trap with your local health department and keep your permit current; many jurisdictions require annual certification of maintenance compliance. Coordinate with your waste management provider to ensure they have the proper licensing to haul grease—unlicensed haulers can get you cited even if you maintain the trap. Document everything: service records, pump-out dates, contact information for your contractor, and any repairs. When health inspectors visit (routine or complaint-based), have these records ready to show proactive management. Join a local food truck association or network to stay updated on changing regulations, as some municipalities tighten FOG requirements annually.

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