All Emergency Grease Trap Service

Handling a Grease Trap Emergency: What to Do and Who to Call

A backed-up grease interceptor is not a crisis if you know how to respond. It becomes one when operators are unfamiliar with the warning signs, wait too long to call for service, or cannot reach a qualified provider quickly.

Recognize the early warning signs. The most reliable early indicator of an interceptor approaching capacity or developing a blockage is slow drainage from floor drains and sinks in the kitchen — particularly those upstream of the interceptor. If multiple drains are slow simultaneously, the interceptor is the likely cause. A sewer odour intensifying in the kitchen is a secondary indicator, often preceding visible drainage problems. Catching these signs and calling for service before a full backup occurs is significantly less disruptive than managing a surging floor drain during service.

What constitutes an actual emergency. A full backup — wastewater or grease-laden water coming up through floor drains or into the kitchen — is an immediate health and safety issue requiring the kitchen to be taken offline until the situation is resolved. A municipal FOG program notification may be required depending on your jurisdiction if the backup results in any discharge outside the building. Do not continue kitchen operations with active drain backup.

Your first call. Contact your regular FOG service provider first — they have your interceptor's history, location, and specifications on file, which speeds diagnosis and response. If your regular provider cannot respond within an acceptable time frame, search for emergency providers in your area using the directory above filtered for 24/7 response. Have ready: your address, the interceptor type, the approximate tank size if known, and a description of what you are observing.

What the technician will do. On arrival, the technician will inspect the interceptor access covers and assess the situation. For a capacity issue, they will perform an emergency pump-out. For a blockage in the inlet or outlet pipe, they will jet the pipe to clear it. For a structural issue, they will assess the damage and advise on repair or replacement — emergency service companies are not always equipped to perform interceptor repairs on-site, and a follow-up appointment with a plumber may be required.

Document everything. Even in an emergency, insist on a waste manifest. The manifest is your proof that the waste was legally disposed of and that licensed service occurred. It also starts the compliance paper trail if a municipal inspector follows up after an overflow event. If the technician cannot or will not issue a manifest, that is a significant red flag about the legality of their disposal method.

After the emergency: understand why it happened. An emergency pump-out resolves the immediate problem — it does not address the underlying cause. After service, review your scheduled service frequency with your provider. If you filled an interceptor significantly ahead of schedule, your current frequency is likely insufficient for your operational load. A structural issue discovered during an emergency visit should be addressed promptly — a failed baffle or compromised access seal will cause recurring problems.

Build the relationship before you need it. The best preparation for an emergency grease trap situation is a relationship with a provider who knows your installation. When you onboard a new FOG service provider, ask directly about their emergency response terms: what is their typical response window, what is the emergency rate structure, and do they have 24/7 dispatch. Use the emergency filter in the directory above to find providers in your area who have indicated round-the-clock availability.