Restaurant Grease Interceptor Requirements: Start With Local Rules

Prepared by GreaseTrapLocator · Fact review: August 9, 2026

Restaurant grease-interceptor requirements are set for a particular location and project. This page is a starting point for finding the responsible local program and the documents it requires. It does not decide whether every restaurant needs equipment, select a type or size, provide an installation method, set a cleaning schedule, or state a fine, cost, record-retention period, or food-truck rule.

Local requirements determine what applies to a restaurant

EPA explains that local limits are site-specific and may be numeric or narrative limits, including best-management practices. That federal framework does not supply the rule for an unnamed restaurant or municipality. [1]

Toronto, Ontario example only: Toronto’s Sewers By-law program requires owners and operators of food-service establishments to properly install, operate, and maintain a grease interceptor on a pipe that connects directly or indirectly to a sanitary sewer. The City says that its mandatory requirement applies where food is cooked, heated, processed, or prepared, and it lists restaurants, coffee shops, bakeries, and mobile food vendors among its examples. Toronto also says a building permit is needed to install or replace a grease interceptor. These are Toronto rules, not a nationwide restaurant rule. [2]

Austin, Texas example only: Austin Water tells applicants not to purchase a grease trap or interceptor before building-plan approval and an Industrial Waste approval letter that specifies the required size and design. Austin also describes a limited variance process for certain facilities. Those details apply only to Austin’s program. [3]

Start with local approval and fixture review

Before relying on a national-looking chart, a restaurant category, or an old plan, ask the responsible local authority what it requires for the specific site and proposed work. Give the authority and project team the information they request about the actual operation, connected fixtures, and proposed equipment.

This overview does not convert fixture information into gallons, flow ratings, grease capacity, retention time, seats, meals, menu type, or a restaurant-size recommendation. For that measurement boundary, read the separate capacity and local-approval explanation. For the specific caution that a restaurant label is not a sizing method, see why restaurant type does not size an interceptor.

Understand the documents for the approved system

Use the current documents for the exact proposed product together with the locally approved project documents. A product document can describe one model; it does not establish approval for a different model, site, or city.

Toronto’s point-of-source program is a local example of the information a device label can identify: flow rating, removal efficiency, maximum containment capacity, and inlet size. Toronto also says that manufacturer and installation drawings must be kept on site for inspection if the markings are not visible after installation. This is a Toronto/Ontario example only; it is not a universal label, document, or selection rule. [2]

For project approval, approved documents, and qualified-team boundaries, use the separate grease-interceptor project-readiness guide. For site-access planning, use the site-access guide. Neither link supplies a generic installation procedure.

Maintain the records your local program requires

Ask the responsible local program what inspections, service documentation, or other records apply to the specific restaurant and approved equipment. EPA’s local-limits framework does not establish one national maintenance interval or record-retention period. This page does not prescribe maintenance work, chemicals, additives, or a service schedule. [1]

Frequently asked questions

Does every restaurant need a grease interceptor?

This page does not give a nationwide answer. Toronto’s program has a mandatory requirement for food-service facilities where food is cooked, heated, processed, or prepared, while Austin describes a limited local variance process for certain facilities. Confirm the rule for the specific location. [2][3]

Can restaurant type, meals, or menu decide the equipment size?

No. This page does not use restaurant type, meals, seats, or menu labels as a sizing shortcut. Use the locally applicable approval process and approved project documents. See the separate restaurant-type sizing caution.

Can this page choose an interceptor by gallons or flow rating?

No. Capacity, flow rating, grease capacity, and other product fields are not interchangeable. Use the local process and the documents for the exact proposed product. See the separate capacity explanation.

What documents should the restaurant keep for the approved system?

Ask the responsible local authority what it requires. Toronto is one local example: when its device markings are not visible after installation, the City requires the manufacturer and installation drawings to be kept on site for inspection. That example applies in Toronto/Ontario only. [2]

How often must a restaurant clean or pump the equipment?

This page does not give a universal schedule. Confirm the locally applicable requirements and the current instructions for the exact approved product.

Sources

1. U.S. Environmental Protection Agency, “Pretreatment Standards and Requirements—Local Limits” (last updated August 25, 2025; verified August 9, 2026). Federal local-limits framework only.
2. City of Toronto, “Grease Interceptor Installation” (verified August 9, 2026). Toronto/Ontario only.
3. Austin Water, “Grease Trap Sizing & Design Criteria” (policy says updated April 2021; verified August 9, 2026). Austin, Texas only.