Oklahoma Grease Trap Regulations (2026)
Everything a Oklahoma restaurant or commercial kitchen needs to know about grease trap requirements: who regulates it, how often you must clean, what permits and registration you need, what records to keep, and what violations actually cost. Citations link to the official source so you can verify every claim — and show your inspector you did.
Oklahoma Requirements at a Glance
| Cleaning frequency | Clean when 25% full of FOG and solids, or at minimum every 90 days, whichever comes first. A complete 100% pump-out is required — decanting (returning liquid to the trap) is prohibited. |
| State regulator | Oklahoma Department of Environmental Quality (DEQ) |
| Governing regulation | Oklahoma Administrative Code 252:623-5-2 — requires grease/oil interceptors for wastewater with excessive grease, inspected and cleaned regularly at the user's expense |
| Manifest required | Yes — grease hauler manifest completed at every service and left with the business, with a final manifest returned after disposal; filed chronologically on-site (source) |
| Licensed hauler required | Yes — municipal approved-hauler lists (Oklahoma City and Tulsa each maintain one) — note: grease trap waste is EXPLICITLY excluded from Oklahoma DEQ's state septage-hauler program, so approval is a city matter (source) |
| Record retention | 3 years — manifests and hauling receipts kept on-site and available on request (source) |
| Penalties | Municipal violations can reach $1,000 per day per violation (and up to 6 months imprisonment) under state enabling law (11 O.S. §14-111). Oklahoma City starts with a notice, escalates to administrative fines from $250, and can disconnect water/sewer service for ongoing non-compliance. (source) |
Who Regulates Grease Traps in Oklahoma
At the state level, Oklahoma Department of Environmental Quality (DEQ) (program page) oversees FOG (fats, oils, and grease) discharge; the governing rule is Oklahoma Administrative Code 252:623-5-2 — requires grease/oil interceptors for wastewater with excessive grease, inspected and cleaned regularly at the user's expense. Day-to-day enforcement — inspections, cleaning intervals, fines — usually happens through your city or county sewer utility's pretreatment program, which can set stricter rules than the state.
Hauler Licensing & Verification
Oklahoma requires grease trap waste to be transported by licensed/registered haulers under municipal approved-hauler lists (Oklahoma City and Tulsa each maintain one) — note: grease trap waste is EXPLICITLY excluded from Oklahoma DEQ's state septage-hauler program, so approval is a city matter. (source) Before signing a contract, verify the hauler's registration on the official lookup — it takes two minutes and it's the single best protection against illegal-dumping liability landing on you.
Manifests & Record Keeping
- Collect a signed manifest (grease hauler manifest completed at every service and left with the business, with a final manifest returned after disposal; filed chronologically on-site) at every service — date, volume removed, hauler license, disposal facility. (source)
- Keep records 3 years — manifests and hauling receipts kept on-site and available on request. (source)
- Track everything in one place: free maintenance log and cleaning schedule template.
City Programs in Oklahoma
Cities run their own FOG programs and often set stricter rules than the state:
Oklahoma City
- Program: Oklahoma City Water Utilities FOG Program
- Ordinance: OAC 252:623-5-2; OKC Sewer Use Ordinance
- Cleaning frequency: Minimum every 90 days or at 25% full, whichever is first; 100% pump-out required
- Permit: Install and maintain an interceptor, use only city-approved haulers, document pump-outs with manifests, keep records 3 years
- Fines: From $250 per violation; up to $1,000/day for ongoing non-compliance; possible service disconnection
Tulsa
- Program: City of Tulsa Water and Sewer Grease Handling Program
- Ordinance: Tulsa Revised Ordinances Title 11-C, Chapter 13 (Ordinance 20910)
- Permit: Grease interceptor/separator permit required (via Tulsa Development Services); must use a permitted grease hauler and participate in manifest tracking
Worth Knowing in Oklahoma
Oklahoma has no statewide FOG permit or manifest system — it's delegated to cities under the OAC 252:623 pretreatment framework. A notable quirk: grease trap waste is specifically excluded from DEQ's state septage-hauler license, so hauler approval rests entirely with municipalities (Oklahoma City and Tulsa each keep their own approved-hauler list). Both cities require a full 100% pump-out with no decanting.
Frequently Asked Questions
How often must grease traps be cleaned in Oklahoma?
Clean when 25% full of FOG and solids, or at minimum every 90 days, whichever comes first. A complete 100% pump-out is required — decanting (returning liquid to the trap) is prohibited. Your city's FOG program may require more frequent service — and regardless of the legal interval, clean before fats, oils, and grease reach 25% of trap capacity.
Do I need a manifest for grease trap cleaning in Oklahoma?
Yes. Get a signed manifest (grease hauler manifest completed at every service and left with the business, with a final manifest returned after disposal; filed chronologically on-site) from the hauler at every service and keep it 3 years — manifests and hauling receipts kept on-site and available on request. It's the document inspectors ask for first.
What are the penalties for grease trap violations in Oklahoma?
Municipal violations can reach $1,000 per day per violation (and up to 6 months imprisonment) under state enabling law (11 O.S. §14-111). Oklahoma City starts with a notice, escalates to administrative fines from $250, and can disconnect water/sewer service for ongoing non-compliance. Enforcement is usually municipal, so your city's fine schedule controls — the fastest way to stay off it is a maintained cleaning schedule and complete records.
Can anyone pump my grease trap in Oklahoma?
No — use a licensed/registered hauler (municipal approved-hauler lists (Oklahoma City and Tulsa each maintain one) — note: grease trap waste is EXPLICITLY excluded from Oklahoma DEQ's state septage-hauler program, so approval is a city matter). If your hauler dumps illegally, the paper trail you kept is your protection. Verify registration on the official lookup linked above.
Do I need a permit for a grease trap in Oklahoma?
In most Oklahoma cities, yes — food service establishments must register with, or get a permit from, the local FOG / pretreatment program before discharging grease trap waste to the sewer. The exact permit and registration requirements vary by city; the major-city programs are listed above, and your local sewer authority has the specifics for your address.
Next Steps
- Find grease trap cleaning companies in Oklahoma
- Run the Oklahoma-adapted compliance checklist
- Put manifests and pricing in writing (free template)
Official Sources
- https://www.deq.ok.gov/
- https://www.law.cornell.edu/regulations/oklahoma/OAC-252-623-5-2
- https://oklahoma.gov/deq/divisions/ecls/on-site-sewage-programs/deq-licensed-septage-pumpers-and-transporters.html
- https://www.okc.gov/departments/utilities/protect-your-pipes/disposing-of-fats-oils-grease/fog-restaurants
- https://www.cityoftulsa.org/government/departments/water-and-sewer/wastewater/grease-handling/
- https://law.justia.com/codes/oklahoma/title-11/section-11-14-111/
This guide summarizes official sources for general information and is not legal advice. Rules change — confirm requirements with Oklahoma Department of Environmental Quality (DEQ) and your local FOG program.
Oklahoma Grease Trap Costs & Rules by City
City-level pricing, cleaning frequency and permit requirements:
Need a Licensed Grease Trap Company?
Find screened companies near you and compare free quotes.
Get My Free Quote