Grease Trap Maintenance Guide for Food Co-ops

Grease Trap Requirements for Food Co-ops

Most municipalities require food service establishments—including co-ops—to install and maintain grease interceptors that meet local plumbing codes. The EPA and state environmental agencies regulate grease trap sizing based on peak water flow and the volume of food preparation. Typical co-ops need either under-sink interceptors for smaller prep areas or exterior interceptors for larger operations. Your local health department and building department determine specific requirements; contact them to verify your co-op's obligations. Many jurisdictions require certification that grease traps meet minimum capacity and that FOG removal occurs before waste enters municipal sewers.

Maintenance Schedule and Common Mistakes

Health departments typically require grease trap pumping every 30–60 days, though high-volume co-ops may need more frequent service. A critical mistake is assuming pumping once or twice per year is sufficient—this leads to overflow, backups, and health code violations. Another common error is allowing staff to pour cooking oils directly down drains; educate workers to collect used oil in designated containers for recycling or disposal. Failing to document maintenance with dated receipts from licensed haulers creates compliance gaps during inspections. Many violations stem from neglected grease traps that accumulate solid FOG buildup, damaging municipal infrastructure and triggering fines.

Staying Compliant and Avoiding Violations

Establish a written cleaning and maintenance log, recording dates, hauler company names, and gallons removed at each service. Schedule pumping proactively rather than waiting for backup problems—this prevents operational disruptions and demonstrates good faith compliance. Train all kitchen staff on proper FOG disposal: use strainers, wipe pans before washing, and never pour grease down drains. Conduct visual inspections monthly to check for odors, leaks, or visible accumulation around the grease trap. Document these checks and keep all hauler receipts; health inspectors expect to see this paper trail, and it protects your co-op from penalties during audits.

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