Maryland FOG & Grease Trap Rules
Baltimore City
- Maintain a valid wastewater-discharge permit and a properly sized, installed, and functioning grease-control device.
- Keep grease below the 25% rule, maintain an onsite log, and retain manifests and records for three years. Use covered, leakproof receptacles and licensed haulers.
- Baltimore Department of Public Works conducts inspections and uses notices of violation and other enforcement actions.