Grease Trap Cleaning in Washington, DC: Cost, Rules & Top Companies (2026)
Running a commercial kitchen in Washington? Staying on top of grease trap cleaning keeps you out of a sewer backup and compliant with Washington DC's FOG rules. Here's what it costs in Washington, how often you're required to clean, the permit and regulation basics, and the local companies that handle it.
What Grease Trap Cleaning Costs in Washington
Washington is in a higher-cost region — the Northeast and West Coast typically run 20–40% above the national baseline, so expect the upper end of these ranges.
| Trap / interceptor size | Typical cost per service |
|---|---|
| Small trap (under 50 gal) | $115 – $240 |
| Medium trap (50–500 gal) | $150 – $475 |
| Large interceptor (500–1,500 gal) | $400 – $1,200 |
| Large interceptor (1,500+ gal) | $475 – $2,500 |
Typical ranges per service — your price depends on trap size, accessibility, and frequency. Recurring contracts usually run 15–30% below one-off rates. Estimate yours with the cost estimator or see the full pricing guide.
How Often You Must Clean It in Washington
Gravity interceptors: every 90 days or less (or >25% full); hydromechanical units: every 30 days or less (or >50% full) (under 21 DCMR §1502.18; D.C. Official Code §8-105.01 et seq.; DC Plumbing Code). The industry-standard 25% rule applies either way: clean before fats, oils, and grease reach a quarter of your trap's capacity, because past that point grease passes straight through to the sewer. High-volume kitchens (fryers, BBQ, seafood) often need service more often than the minimum.
Washington Grease Trap Requirements, Permits & Penalties
| Program | DC Water FROG (Fats, Rags/Wipes, Oil, and Grease) Program (official page) |
| Governing code | 21 DCMR §1502.18; D.C. Official Code §8-105.01 et seq.; DC Plumbing Code |
| Permit / registration | FSE registration in the DC Water FOG BMP portal; Waste Hauler Discharge Permit (per vehicle) for haulers; keep manifests on-site 3+ years |
| Penalties | Enforcement escalates to administrative orders and possible publication in The Washington Post |
Always get a signed manifest at every service and keep your records — that's the proof inspectors ask for. For the full Washington DC breakdown (hauler licensing, record retention, state penalties), see the Washington DC grease trap regulations guide.
Top Grease Trap Cleaning Companies in Washington
Screened companies serving Washington and the surrounding metro:
- DC Grease Trap Services · 4.9★ · (202) 468-1315
- Nelson Plumbing & Construction LLC · 4.8★ · (202) 627-8575
- Roto-Rooter Washington DC · 4.8★ · (202) 291-2113
- Magnolia Plumbing, Heating & Cooling · 4.4★ · (888) 333-1046
- Spartan Plumbing Heating & Air Conditioning · 1-800-882-0192
See all grease trap companies in Washington → or get free quotes from several at once.
Frequently Asked Questions
How much does grease trap cleaning cost in Washington?
In Washington, expect roughly $150–$475 for small-to-medium traps and $400–$1,200 for larger interceptors per service. Washington is in a higher-cost region — the Northeast and West Coast typically run 20–40% above the national baseline, so expect the upper end of these ranges. Get 2–3 local quotes to compare — it's free.
How often do I have to clean my grease trap in Washington?
Gravity interceptors: every 90 days or less (or >25% full); hydromechanical units: every 30 days or less (or >50% full) Regardless of the calendar, clean before FOG and solids reach 25% of capacity — past that, grease escapes to the sewer, which is what triggers violations.
Do I need a permit for a grease trap in Washington?
FSE registration in the DC Water FOG BMP portal; Waste Hauler Discharge Permit (per vehicle) for haulers; keep manifests on-site 3+ years. See the Washington DC regulations guide for details.
What are the penalties for grease trap violations in Washington?
Enforcement escalates to administrative orders and possible publication in The Washington Post Keep a signed manifest from every cleaning and your maintenance records on file — that's what inspectors ask for first.
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