Code of Massachusetts Regulations
360 CMR - MASSACHUSETTS WATER RESOURCE AUTHORITY
Title 360 CMR 10.000 - Sewer Use
GENERAL PROVISIONS
Section 10.017 - Grease Traps and Grease Interceptors

(1) A Person who is required by Massachusetts law or regulation to have a grease trap or grease interceptor (including by 310 CMR 15.230: Retreatment Units - Grease Traps and 248 CMR 10.00: State Plumbing Code) shall have grease traps and grease interceptors of the appropriate size, type, construction, and location as required by state law or regulation. Such Person shall assure that its grease traps and grease interceptors are appropriately cleaned and maintained so that they operate efficiently and effectively.

(2) Chemical, biological, or physical means shall not be used to release fats, wax, oil, or grease into the sewer, bypass the trap or interceptor, or otherwise make the trap or interceptor operate less effectively. A chemical or biological agent that the Authority has approved in writing for use in a grease trap or interceptor may be added to a trap or interceptor to convert the fats, wax, oil, and grease in a trap or interceptor to a substance not regulated by 360 CMR 10.021 through 10.024 if the resulting discharge from the trap or interceptor will not cause or contribute to an obstruction or blockage in the sewer or otherwise violate 360 CMR 10.021 through 10.024. Unless so converted, the fats, wax, oil, and grease contents of a grease trap or interceptor shall not be discharged to the sewer system.