Restaurants

How Often Should a Restaurant Pump Its Grease Trap?

A no-nonsense schedule for restaurants and food trucks across NW Indiana and Chicagoland — plus the 25% rule that keeps inspectors happy.

September 12, 2025 5 min read

The 25% rule

Most municipal codes require pumping when the grease trap reaches 25% capacity by volume of FOG (fats, oils, grease) and solids. Hit that line and you risk: code violations, fines, line backups during service, and an unhappy health inspector.

A realistic schedule

  • High-volume kitchens (steakhouse, BBQ, diner): monthly
  • Standard full-service restaurants: every 6–8 weeks
  • Cafes, bars, sandwich shops: quarterly
  • Ghost kitchens and food trucks: monthly to biweekly

We track your interval and call you before you forget. That's the whole pitch.

Documentation matters more than people think

Every pump-out should leave a signed manifest on-site. The inspector doesn't want your word — they want the paper. We leave one every visit. Keep them in a folder by the office desk.

Signs you're past due

  • Slow drains in the floor sink near the dish pit
  • Sewer odor near the kitchen
  • Grease visible at the inspection port
  • It's been more than your scheduled interval — just call

We'll quote on the phone before we send the truck.

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