A grocery store should assess grease-control needs department by department. A deli, bakery, meat or seafood area, hot-food counter, café, and central warewashing area can have different fixtures and waste streams, while some retail areas create little or no food-preparation wastewater.
Build a department and fixture inventory
- Deli and hot-food preparation, including fryers, grills, sinks, and dishwashing.
- Bakery production and any café or sandwich operation.
- Meat, seafood, and prepared-food cleanup areas.
- Shared warewashing, mop sinks, floor drains, compactors, and exterior wash areas.
- Used cooking-oil storage and collection routes.
Metro Vancouver's sewer-use bylaw expressly includes grocery stores in its local food-sector framework. Seattle and Portland publish their own commercial-kitchen FOG and interceptor guidance. These named programs show why a grocery chain needs an address-specific record rather than one assumed national rule.
Confirm routing and equipment
Use approved plans or a verified drain survey to identify where each fixture discharges. Submit actual fixtures, flows, menus, and equipment to the sewer and plumbing authorities. The authority decides which departments connect to grease control, the accepted design method, access, sampling, and inspections.
When a department is remodeled, leased to another operator, or converted to a new use, recheck the approval. A new fryer or expanded prepared-food program can change the relevant facts even when the store address stays the same.
Operations and records
- Scrape and dry-wipe before washing; keep food solids out of drains.
- Collect used cooking oil separately from interceptor waste.
- Assign daily checks and service-record custody to named roles.
- Use the local service trigger and actual loading measurements.
- Keep permits, approved plans, manifests, invoices, inspection records, and corrections for the required period.
Related GTL guides
Frequently asked questions
Does an entire grocery store need one grease interceptor?
Not necessarily. The approved arrangement depends on the store's departments, fixtures, plumbing, site conditions, and local rules. A verified drain map is the starting point.
Are grocery bakeries and delis evaluated the same way?
Do not assume so. Their menus, fixtures, flows, and cleanup can differ. Give the authority department-specific information.
How often should grocery-store grease equipment be serviced?
Use the applicable local trigger or maximum interval and actual loading records. Different departments can change the loading pattern over time.
What should a chain track for each store?
Track the controlling authorities, approvals, device details, connected departments, service trigger, provider status, manifests, inspections, and open corrective actions for each address.
General information only: This page is not legal, engineering, plumbing, environmental, health, or safety advice.
Official sources
- U.S. EPA — Controlling FOG Discharges from Food Service Establishments
- Metro Vancouver — Sewer Use Bylaw No. 365
- Seattle Public Utilities — FOG for commercial kitchens
- City of Portland — Grease interceptors
- Austin Water — Grease-trap sizing and design criteria
Fact-checked August 14, 2026. Government guidance and local rules can change; recheck the authority serving the facility before relying on any requirement.
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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