How often should a grease trap be cleaned?
Undersink grease waste interceptors shall be monitored by the food service facility at least once per week. Removal of grease waste and sediments is required when operational capacity is reduced to 80% or less. In ground grease waste interceptors shall be pumped at a frequency that maintains a grease and oil layer of less than 6 inches on the top of the grease waste interceptor and a solids layer of less than 8 inches on bottom of the grease waste interceptor. The measurement point for determination of the grease and solids layer shall be adjacent to the outlet pipe.
