Prepared by GreaseTrapLocator · Fact review: August 9, 2026
An above-ground or in-ground label does not select a grease-interceptor configuration for a restaurant. This page does not provide a capacity range, a restaurant-type selector, or installation instructions. Start with the local approval path, the approved site plan, and the documents for the exact proposed equipment.
Why the approved configuration is local
Toronto’s guidance describes hydromechanical grease interceptors that may be installed under a sink or in-ground, and gravity grease interceptors that are in-ground. That is a Toronto/Ontario example only. It does not select a configuration for a project elsewhere. [1]
A product document can also describe a particular configuration without deciding a local project. Watts’ instructions describe floor or recessed installation directions for its named product families only. They do not establish a general restaurant rule or local acceptance. [2]
Information to bring to plan review
For the actual project, bring the local authority or approved project team the proposed equipment document, the approved site information, and the questions they request for the location. Do not use a previous restaurant, a menu label, a seat count, or a generic online comparison as a substitute for that review.
Use the separate measurement and local-approval resource for the boundary between liquid capacity and other equipment ratings. This page does not convert those measurements or turn either configuration into a size recommendation.
Compare named equipment documents
Read the exact current document for the proposed model and configuration. Confirm with the local approval path whether that document, the site plan, and any additional project information are needed. A document for one named model is not a selection rule for a different model or location.
Access and service planning with the project team
Use plan review to identify the access and future-service questions that apply to the approved project. This page does not prescribe an installation location, a clearance, an excavation method, an inspection process, or a service schedule.
Frequently asked questions
Does an above-ground or in-ground label choose a grease-interceptor size?
No. This page does not turn a configuration label into a capacity or restaurant-size recommendation. Use the local approval process and approved project documents for the specific project.
Can a local example decide a project in another city?
No. Toronto’s guidance is a Toronto/Ontario example: it describes hydromechanical configurations that may be under a sink or in-ground and gravity interceptors that are in-ground. It does not decide a configuration elsewhere. [1]
Can one manufacturer document select the configuration?
No. Watts’ instructions describe floor or recessed directions for named product families only. Local approval and the approved project information still control the specific project. [2]
What should I bring to the project review?
Bring the exact proposed-equipment document, the approved site information, and the questions requested by the local authority or approved project team. This page does not provide a size calculation or installation procedure.
Sources
- City of Toronto, “Grease Interceptor Installation” (modified May 14, 2026; accessed August 9, 2026). Toronto/Ontario only.
- Watts, “Hydromechanical Grease Interceptor Installation Instructions” (retained source record accessed August 9, 2026). Named Watts product families only.
Author: Grease Trap Locator Editorial Team
The Grease Trap Locator editorial team covers FOG compliance, grease trap maintenance, and commercial kitchen regulations across the US and Canada. Our guides are written for restaurant owners, facility managers, and food service operators who need practical, accurate information without the fluff.
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