Grease Trap/Interceptor Permit in Nashville, Tennessee (2026)
Without a valid Grease Trap/Interceptor Permit from Nashville's Metropolitan Public Health Department, you cannot legally discharge wastewater from your kitchen—your lease may be terminated and your lender can halt construction draws until proof of compliance is on file. The Grease Trap/Interceptor Permit (also called a grease interceptor authorization or FOG compliance permit) certifies that your restaurant's grease trap meets Nashville code standards for size, maintenance, and inspection. Key facts:
- 51 fields — ApronPrep auto-fills 42
- No government filing fees for the permit itself (though you may incur costs for required inspections or grease trap installation)
- Timeline varies by inspection scheduling and contractor availability
Most applicants complete this in under 15 minutes with ApronPrep, which auto-fills 42 of 51 fields.
Analyzed from Grease Trap/Interceptor Permit
82% from one compliance interview
Manual entry or document upload required
Why You Need a Grease Trap/Interceptor Permit
Grease Trap/Interceptor Permits in Nashville are required under Metro Nashville's local sewer use ordinance, which governs fats, oils, and grease (FOG) discharge into the public sewer system. The Metropolitan Government of Nashville and Davidson County enforces grease interceptor requirements through Metro Water Services, which sets enforceable discharge limits for food service establishments. Any restaurant, commissary, or food processing operation that connects to the public sewer must install, register, and maintain an approved grease trap or interceptor before beginning operations — and must hold a valid permit throughout the life of the business. Failure to obtain this permit is not a technicality: Metro Water Services conducts routine inspections and cross-references new food service license applications against its FOG control program database.
Operating without a valid Grease Trap/Interceptor Permit in Nashville exposes your business to a cascade of consequences that go well beyond a single fine. Metro Water Services has authority to act quickly when violations are identified, and the practical fallout extends into your lease and insurance relationships as well. Specific consequences include:
- Sewer service disconnection — Metro Water Services can suspend your water and sewer connection, forcing an immediate closure until compliance is demonstrated
- Fines and remediation costs — violations can trigger per-day civil penalties under Metro's sewer use regulations, plus you may be required to fund professional remediation of any FOG buildup in the downstream sewer line
- Permit revocation — your food service permit issued by Metro Public Health can be placed on hold or revoked if a grease interceptor violation is flagged during a health inspection
- Lease and insurance complications — most commercial kitchen leases require tenants to maintain all required environmental and utility permits; a lapse can constitute a lease default, and some general liability policies exclude losses arising from unpermitted sewer discharges
- Cease-and-desist orders — repeated or egregious violations can result in a formal cease-and-desist order requiring you to halt all food service operations pending a compliance review
Legal code: Local sewer use regulations, water connection requirements, road/sidewalk ordinances, grease discharge limits
Recent update: As of 2025, Metro Water Services updated its FOG Control Program inspection protocols to require electronic submission of grease interceptor maintenance logs, replacing the previous paper-based reporting process — contact Metro Water Services to confirm whether your establishment's next renewal cycle falls under the new digital submission requirement.
Who Needs a Grease Trap/Interceptor Permit?
| Type | Required | Notes |
|---|---|---|
| Restaurant (Full-Service) | Required | Full-service restaurants generate significant fats, oils, and grease (FOG) from cooking and dishwashing operations and are explicitly required to install and permit a grease interceptor under Nashville Metro Code of Laws § 15.64.110 and Metro Water Services FOG Control Program regulations. |
| Bar / Nightclub | Required | Bars and nightclubs that prepare or serve food — including bar snacks, fried appetizers, or full menus — must obtain a grease trap permit under Metro Water Services FOG rules; even limited kitchen operations producing FOG discharge trigger the interceptor requirement. |
| Food Truck | Required | Nashville food trucks that connect to a commissary or base kitchen with direct sewer access are subject to Metro Water Services FOG Control requirements for that fixed facility; the truck itself must manage grease onboard and dispose of FOG waste only at an approved grease receiving station, which requires prior authorization from Metro Water Services. |
| Coffee Shop / Café | Required | Coffee shops and cafés that operate espresso equipment, dishwashers, or any food preparation involving oils or dairy-based products discharge FOG into the sewer system and are required to install a properly sized grease interceptor or trap and obtain a permit under Metro Water Services FOG Control Program rules. |
See which restaurant types need this requirement — and which don't.
See Full Requirements →Field-by-Field Guide (51 Fields)
42 of 51 auto-filledBusiness Legal Name
textEnter the exact legal name of your business entity as it appears on your Tennessee Secretary of State registration or business formation documents — not your trade name or signage name.
COMMON MISTAKE: Entering the DBA/trade name (e.g., 'Joe's BBQ') instead of the registered legal entity name (e.g., 'JB Restaurant Group LLC') is a leading cause of rejection because Metro Nashville Water Services cross-references this against state business records.
Doing Business As (DBA)
textEnter the trade name or 'doing business as' name your restaurant operates under — this is the name on your signage, menu, and Metro Nashville business tax license.
COMMON MISTAKE: Leaving this field blank when your operating name differs from your legal entity name will cause a mismatch with Metro Nashville's business tax records and may trigger a manual review.
Federal EIN
textEnter your 9-digit Federal Employer Identification Number in the format XX-XXXXXXX exactly as assigned by the IRS — Metro Nashville Water Services uses this to verify business identity and link permits across departments.
COMMON MISTAKE: Transposing digits or omitting the hyphen (entering '123456789' instead of '12-3456789') will fail Metro Nashville's automated format validation and return the application.
Business License Number
textEnter your Metro Nashville/Davidson County business tax license number exactly as it appears on your current license certificate — this is issued by the Metro Nashville Department of Finance and not the same as your state sales tax ID.
COMMON MISTAKE: Entering a Tennessee state business license number or sales tax registration number instead of the Metro Nashville local business license number will cause a cross-reference failure during permit review.
Facility Street Address
textEnter the full physical street address of the restaurant location where the grease trap or interceptor is installed — include suite or unit number if applicable, and do not use a P.O. Box.
COMMON MISTAKE: Using a mailing address, corporate headquarters address, or owner's home address instead of the grease trap's physical installation location will cause Metro Nashville Water Services to flag the permit for on-site verification, adding weeks to processing.
City
textEnter 'Nashville' or the specific incorporated municipality within Davidson County where the facility is located — Metro Nashville Water Services jurisdictional boundaries do not always align with ZIP code city names.
COMMON MISTAKE: Entering a neighborhood name (e.g., 'Germantown' or 'The Gulch') instead of the incorporated city name (e.g., 'Nashville') may cause address validation errors in Metro Nashville's permitting system.
State
textEnter 'TN' or 'Tennessee' — this field is typically pre-filled for Nashville applications but must match the physical facility jurisdiction exactly.
ZIP Code
textEnter the 5-digit USPS ZIP code for the physical facility address — Metro Nashville Water Services uses this to route the permit to the correct watershed inspection district.
COMMON MISTAKE: Using a ZIP+4 format or entering the ZIP code for a nearby address or corporate office rather than the grease trap installation site can cause routing errors that delay inspector assignment.
Owner Name
textEnter the full legal name of the individual owner or, for an LLC/corporation, the name of the principal officer or registered agent who is legally authorized to sign permit applications on behalf of the entity.
COMMON MISTAKE: Entering a manager's or employee's name instead of the legally authorized owner or officer will result in rejection because Metro Nashville Water Services requires the signature authority to match the name on file with the Tennessee Secretary of State.
Owner Title
textEnter the official business title of the person named in the Owner Name field — accepted values include 'Owner,' 'Managing Member,' 'President,' or 'Registered Agent,' consistent with your entity's formation documents.
COMMON MISTAKE: Entering informal titles such as 'Operator,' 'Manager,' or 'Chef/Owner' instead of a legally recognized title may cause Metro Nashville Water Services to question signature authority and request additional documentation.
ApronPrep auto-fills 42 of 51 fields from a single compliance interview — no re-typing, no guessing what the government expects.
Top 5 Grease Trap/Interceptor Permit Mistakes
1. Submitting Undersized Grease Interceptor Calculations
Nashville's Metro Water Services requires sizing calculations that comply with the Tennessee Plumbing Code and Metro Code § 15.64, based on fixture units and peak flow rates — not just a rough estimate of your kitchen size. Applicants frequently submit interceptor sizing based on tank volume alone, without showing the required flow rate calculations, which triggers an automatic review rejection and adds 2–4 weeks to your timeline. To avoid this, have a licensed plumber or engineer provide a stamped sizing worksheet that documents the number of fixture units, drainage flow rate (in gallons per minute), and the resulting interceptor capacity before you submit.
2. Missing or Incomplete Plumbing Plan Drawings
Metro Water Services requires scaled plumbing plan drawings that show the grease interceptor location, inlet/outlet pipe sizes, vent connections, and cleanout access points — a rough sketch or unlabeled diagram will not be accepted. A common example of this mistake is submitting a floor plan that shows where the trap will sit but omits the pipe routing from kitchen fixtures to the interceptor and the connection to the sewer lateral, resulting in an 'incomplete submittal' notice. Ensure your drawings are prepared or reviewed by a licensed plumber and include all required labels, dimensions, and a legend before submission.
3. Listing the Wrong Responsible Party or Business Entity
The permit application must list the legal business entity that holds the Metro Nashville business license and the Metro Water Services account — entering a trade name (e.g., 'Joe's Diner') instead of the registered LLC or corporation name (e.g., 'JD Restaurant Group, LLC') causes a name mismatch that Metro Water Services flags during verification, adding 1–2 weeks for correction. This mismatch also creates problems downstream when the permit needs to align with your FOG (Fats, Oils, and Grease) hauler manifest records. Cross-reference the exact legal name on your Tennessee Secretary of State filing before completing this field.
Skip the Paperwork on Your Grease Trap/Interceptor Permit
ApronPrep auto-fills 42 of 51 fields from one compliance interview.
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Grease Trap/Interceptor Permit by City in Tennessee
| City | Fee Range | Timeline |
|---|---|---|
| Knoxville | ||
| Memphis | Not specified on page | Not specified on page |
| Nashville |
Timeline: Varies
Determine Grease Trap Size and Type Requirements
Contact the Nashville Metro Public Health Department or your plumbing contractor to confirm the required grease trap capacity (measured in gallons) based on your restaurant's daily cooking volume and floor drain layout. You'll need your kitchen floor plan and a list of all grease-producing equipment (fryers, griddles, dishwashers). This step is critical — undersizing your trap is the #1 reason permits are rejected after inspection.
Obtain and Complete the Grease Trap Permit Application
Download the Grease Trap/Interceptor Permit application from the Nashville Metro Planning Department website or request it from the Environmental Services office. Complete all required fields: property address, trap location (kitchen, exterior, or both), trap capacity in gallons, maintenance plan contact information, and the name of the licensed plumber who will install or service the trap. Most applicants spend 15-20 minutes on the form itself.
Submit Application with Required Documentation
File your completed application with the Nashville Metro Planning Department (Environmental Services Division). Include: a site/floor plan showing trap location and drainage lines, specifications or product data sheet for the proposed trap, proof of business address ownership or lease agreement, and the contractor's license number for the plumber who will perform installation. Submit in person at the Planning Department office (don't rely on mail — in-person submission reduces processing time by 1-2 weeks).
Where to Apply
Applications are handled by your local department of public works (dpw) in each city. Select your city below for authority details, fees, and processing timeline.
Other Requirements You'll Need
This is one of 13 requirements for opening a restaurant in Tennessee.
ADA Compliance Self-Certification
federal
Alarm System Permit/Registration
local
Alcohol Server Training Certification
state
Annual Report Filing
state
See all co-required forms and how they connect to your compliance dossier.
See All RequirementsProcessing timelines vary depending on whether your grease trap system requires plan review and inspection. Per the Metro Nashville Public Health Department, most applications are processed within 5–10 business days once submitted, though initial inspections may take an additional 2–3 weeks to schedule. If your system requires modifications based on inspection findings, expect an additional 1–2 weeks. Contact the Metro Nashville Public Health Department to confirm current processing times for your specific installation type.
Metro Nashville does not charge a separate filing fee for grease trap/interceptor permits — the cost is $0 per the Metro Nashville Public Health Department fee schedule. However, you will incur costs for the grease trap system installation itself, professional inspection services, and any required plan reviews or design certifications. Not legal advice — verify current fee structure with the Metro Nashville Public Health Department.
No — grease trap/interceptor permits are location-specific and tied to the physical address of your restaurant. If you relocate, you must apply for a new permit at your new location and obtain a new inspection. You should also coordinate this with your Certificate of Occupancy and Building Permit timelines to avoid delays. Contact the Metro Nashville Public Health Department to confirm requirements for closing out your original permit.
Grease trap/interceptor permits in Nashville are typically tied to your food service establishment license and follow the same renewal cycle — usually annually. You must maintain active inspections and compliance with Metro Nashville plumbing and health codes throughout the year. Per Metro Nashville Public Health Department guidelines, renewal applications should be submitted before your current authorization expires to avoid service interruptions.
The Metro Nashville Public Health Department inspector will verify that your grease trap or interceptor system meets code requirements for capacity, installation, maintenance access, and proper labeling. The inspector checks for correct sizing based on your kitchen equipment, proper slope of pipes, presence of a cleanout, and compliance with Tennessee plumbing code. If deficiencies are found, you'll receive a written report with required corrections and a timeline for re-inspection — typically 7–14 days to comply.
About This Data
This guide is generated from ApronPrep's compliance dossier system, which uses 53 parallel AI authority experts to discover requirements, then downloads actual forms and generates field-level intelligence for each one.
For Tennessee specifically, we have analyzed compliance dossiers for 3 cities (Knoxville, Memphis, Nashville), generating Rich FILs (Form Intelligence Layers) with 51 form fields analyzed for this requirement. Fee data is sourced from actual county department fee schedules, not estimates.
Our data is verified against official government sources and updated when regulatory changes are detected. If you find an error, please report it — accuracy is our core commitment.
Sources
- Local sewer use regulations, water connection requirements, road/sidewalk ordinances, grease discharge limits
- Knoxville — Department of Public Works (DPW)
- Memphis — Department of Public Works (DPW)
This Form Is One of 60+ Requirements.
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