Reviewed August 15, 2026. There is no single national service interval that fits every commercial grease trap or interceptor. The correct frequency comes from the facility’s controlling sewer authority, permit or approval conditions, installed equipment documentation, and required service records.
This guide helps a restaurant or facility manager identify that requirement. It does not authorize opening, probing, entering, or servicing a grease device.
Start with the rule that controls your facility
Identify the public sewer or pretreatment program responsible for the property. Ask for its current written grease-device requirements and confirm which device category applies. A rule for a small indoor trap may not apply to an outdoor interceptor, and a general webpage may not include conditions written into a facility permit or approval.
Use the local rule before relying on restaurant type, kitchen volume, a generic calendar, or a percentage found online. The U.S. Environmental Protection Agency notes that maintenance frequency depends greatly on facility FOG generation and best-management practices, but that federal guidance does not create one nationwide service schedule.
A practical frequency decision sequence
- Identify the installed device. Record its type, location, and available manufacturer or installation documents without opening or entering it.
- Obtain the current local requirement. Confirm the schedule, condition trigger, measurement method, exceptions, provider requirements, and records that apply to that device.
- Check facility-specific conditions. Review permits, approvals, property rules, inspection notices, and any written instructions that are stricter than a general program page.
- Use qualified observations. Review service records, documented operating changes, and provider or inspector observations. Do not change the schedule from an unapproved self-measurement.
- Document the decision. Keep the current rule and the records required by the controlling program. If a schedule change needs approval, obtain it in writing.
Four local examples show why national shortcuts fail
Dallas, Texas: Dallas Water Utilities publishes a local time-and-condition requirement for covered grease devices and also addresses hauler and disposal conditions. Treat it as a Dallas example only; verify the current device scope and exceptions before relying on it. Dallas Water Utilities source (checked August 15, 2026).
Salt Lake City, Utah: the city publishes device-specific requirements that differ by equipment and include local recordkeeping expectations. Confirm the applicable device definition before selecting a schedule. Salt Lake City Public Utilities source (checked August 15, 2026).
Austin, Texas: Austin Water publishes a local time-and-condition framework for covered devices, plus local hauler and manifest requirements. Verify the service area, equipment coverage, measurement method, and exceptions. Austin Water source (checked August 15, 2026).
Miami-Dade County, Florida: the county ordinance contains device-specific capacity, cleaning, alternative-service, and recordkeeping provisions. Apply the current ordinance and any facility-specific authorization, not a summary from another jurisdiction. Miami-Dade ordinance source (checked August 15, 2026).
When the current plan should be reviewed
A facility should review its written service plan after a change in menu, production, hours, equipment, plumbing, occupancy, or local requirements; after an inspection or documented service observation; or when slow drainage, odor, backup, overflow, or equipment damage is reported. These events do not automatically authorize a longer or shorter interval. They are reasons to consult the controlling authority, equipment documentation, and a qualified provider.
Where the applicable rule sets a time minimum, do not extend service solely because operations changed or the device appeared clean during a prior visit.
Safety boundary for owners and managers
Grease-device work can involve heavy covers, falls, biological exposure, and potentially dangerous atmospheres depending on the device and task. Follow the facility safety program and applicable OSHA, local, manufacturer, and property requirements. Never enter an interceptor. If there is strong odor, poor ventilation, uncertainty, damage, backup, overflow, or any concern about gas exposure, keep people away and contact qualified help.
Frequently asked questions
Is there a national grease trap cleaning schedule?
No single federal interval applies to every commercial grease device. Use the current local rule, facility permit or approval, and installed equipment documentation.
Can a restaurant extend service when business slows down?
Not automatically. Review the controlling requirement and ask the local authority whether a schedule change is allowed or needs written approval. A time minimum still applies where the local rule sets one.
Should a manager measure the device to set the schedule?
Do not open, probe, or measure a grease device based on generic web instructions. Ask the controlling program which authorized records or inspection method it accepts.
What records should the facility keep?
Keep the service, disposal, inspection, and approval records required by the controlling program and any facility-specific permit. Retention periods and document formats vary.
What should happen after odors, slow drains, or a backup?
Protect people and food, follow the facility’s emergency procedures, and use the applicable authority, property, and equipment instructions. Do not improvise around the device.
Official sources
- U.S. EPA: Controlling FOG Discharges from Food Service Establishments
- OSHA: Grease Trap Hazards
- OSHA: Hydrogen Sulfide Overview
For service terminology and quote preparation, read Grease Trap Cleaning and Pumping Explained.
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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