Washington DC Grease Trap Regulations (2026)
Everything a Washington DC 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.
Washington DC Requirements at a Glance
| Cleaning frequency | Gravity grease interceptors: cleaned and inspected every 90 days or less (or sooner if more than 25% full). Hydromechanical interceptors and grease removal devices: every 30 days or less (or sooner if more than 50% full). |
| State regulator | DC Water (Customer Compliance Services / Pretreatment); DC Department of Energy and Environment for hauler licensing |
| Governing regulation | 21 DCMR Ch. 15 (§§1501–1599, Discharges to Wastewater System); statutory authority D.C. Official Code §8-105.01 et seq. |
| Manifest required | Yes — waste manifests kept on-site; DC Water's online FOG BMP portal and app track maintenance and cleaning records (source) |
| Licensed hauler required | Yes — DC Water Waste Hauler Discharge Permit (per vehicle), plus DOEE licensing — required before discharging at the Blue Plains treatment plant (source) |
| Record retention | at least 3 years — waste manifests and grease interceptor maintenance records kept on-site (source) |
| Penalties | All discharge-limit violations draw enforcement; escalating penalties include administrative orders with fines and publication in The Washington Post (specific dollar amounts not published). (source) |
Who Regulates Grease Traps in Washington DC
At the state level, DC Water (Customer Compliance Services / Pretreatment); DC Department of Energy and Environment for hauler licensing (program page) oversees FOG (fats, oils, and grease) discharge; the governing rule is 21 DCMR Ch. 15 (§§1501–1599, Discharges to Wastewater System); statutory authority D.C. Official Code §8-105.01 et seq.. 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
Washington DC requires grease trap waste to be transported by licensed/registered haulers under DC Water Waste Hauler Discharge Permit (per vehicle), plus DOEE licensing — required before discharging at the Blue Plains treatment plant. (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 (waste manifests kept on-site; DC Water's online FOG BMP portal and app track maintenance and cleaning records) at every service — date, volume removed, hauler license, disposal facility. (source)
- Keep records at least 3 years — waste manifests and grease interceptor maintenance records kept on-site. (source)
- Track everything in one place: free maintenance log and cleaning schedule template.
City Programs in Washington DC
Cities run their own FOG programs and often set stricter rules than the state:
Washington
- Program: DC Water FROG (Fats, Rags/Wipes, Oil, and Grease) Program
- Ordinance: 21 DCMR §1502.18; D.C. Official Code §8-105.01 et seq.; DC Plumbing Code
- Cleaning frequency: Gravity interceptors: every 90 days or less (or >25% full); hydromechanical units: every 30 days or less (or >50% full)
- Permit: FSE registration in the DC Water FOG BMP portal; Waste Hauler Discharge Permit (per vehicle) for haulers; keep manifests on-site 3+ years
- Fines: Enforcement escalates to administrative orders and possible publication in The Washington Post
Worth Knowing in Washington DC
DC Water's program (branded "FROG" — Fats, Rags/Wipes, Oil, and Grease) is one of the most comprehensive city-run programs in the region, with a digital portal and app for compliance tracking and a clear 90-day/30-day split by interceptor type. Haulers need BOTH a DC Water discharge permit and DOEE licensing. Restaurants that qualify as Non-Significant Grease Dischargers can apply to be exempt from the annual program fee.
Frequently Asked Questions
How often must grease traps be cleaned in Washington DC?
Gravity grease interceptors: cleaned and inspected every 90 days or less (or sooner if more than 25% full). Hydromechanical interceptors and grease removal devices: every 30 days or less (or sooner if more than 50% full). 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 Washington DC?
Yes. Get a signed manifest (waste manifests kept on-site; DC Water's online FOG BMP portal and app track maintenance and cleaning records) from the hauler at every service and keep it at least 3 years — waste manifests and grease interceptor maintenance records kept on-site. It's the document inspectors ask for first.
What are the penalties for grease trap violations in Washington DC?
All discharge-limit violations draw enforcement; escalating penalties include administrative orders with fines and publication in The Washington Post (specific dollar amounts not published). 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 Washington DC?
No — use a licensed/registered hauler (DC Water Waste Hauler Discharge Permit (per vehicle), plus DOEE licensing — required before discharging at the Blue Plains treatment plant). 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 Washington DC?
In most Washington DC 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 Washington DC
- Run the Washington DC-adapted compliance checklist
- Put manifests and pricing in writing (free template)
Official Sources
- https://www.dcwater.com/FOG-program
- https://www.dcwater.com/work-us/customer-compliance-services/fats-ragswipes-oil-and-grease-frog/food-service-establishments-and-compliance
- https://www.dcwater.com/fats-oils-grease-program-fee-faq
- https://www.dcwater.com/pretreatment-permit
- https://www.dcwater.com/waste-hauler-discharges
- https://www.dcwater.com/about-dc-water/what-we-do/wastewater-treatment/pretreatment/pretreatment-regulations
This guide summarizes official sources for general information and is not legal advice. Rules change — confirm requirements with DC Water (Customer Compliance Services / Pretreatment); DC Department of Energy and Environment for hauler licensing and your local FOG program.
Washington DC Grease Trap Costs & Rules by City
City-level pricing, cleaning frequency and permit requirements:
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