How often should I clean my grease trap or grease interceptor?
Every restaurant, cafeteria, or large non-residential kitchen is required to have a functioning grease removal system (GRS) in place. Grease removal systems help protect users and the city’s pipes by removing grease, oils, and solids prior to discharge. For these to function efficiently, they must be serviced regularly.

These devices come in 2 general types. The first and smaller type is a grease trap, which are commonly made of plastic or metal and are located near 3 compartment sinks. These are required to be emptied, checked, and at least cleaned once per week. Some might be need cleaning daily

The 2nd type of GRS is a grease interceptor. These are larger in ground units with capacities that range from 1,000 to 1,500 gallons. Depending on the type of restaurant and number of customers they might need pumped once a week , month or even greater. Our pretreatment monitor is willing to meet with you to discuss this and help you do an inspection on your interceptor .

Each time a GRS is serviced it must be documented. This form is to be signed and sent to the Sewer Department quarterly (January, April, July and October). Should you have any comments or questions please contact the Wastewater Department.

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1. What are prohibited discharge standards?
2. What are categorical pretreatment standards?
3. What are local limits?
4. Who needs to develop local limits?
5. What is wastewater?
6. How is wastewater treated?
7. What if my sewer is not flowing normally?
8. How often should I clean my grease trap or grease interceptor?