District of Columbia Grease Trap Regulations
FOG Compliance Overview
District of Columbia follows the International Plumbing Code (IPC) as its base plumbing code. The IPC requires grease interceptors for food service establishments and references sizing based on fixture unit counts and flow rates. The state's regulatory authority is the DC Water.
With approximately 2,686 food service establishments statewide, District of Columbia has significant FOG compliance needs. Individual cities and municipalities may adopt additional local ordinances that go beyond the state plumbing code, including stricter pumping schedules, permit requirements, and enforcement penalties.
Need a grease trap in District of Columbia?
Our free calculator uses IPC code requirements to recommend the right size for your establishment.
Size My Grease TrapCity Regulations in District of Columbia
| City | Pumping Frequency | Permit | 25% Rule |
|---|---|---|---|
| Washington | annual | — | — |
Frequently Asked Questions
What plumbing code does District of Columbia follow for grease traps?
District of Columbia follows the International Plumbing Code (IPC). The IPC requires grease interceptors for food service establishments and sizes them based on fixture unit counts and flow rates. Individual cities may adopt stricter local ordinances.
How many food service establishments are in District of Columbia?
District of Columbia has approximately 2,686 food service establishments according to Census Bureau County Business Patterns data. We currently cover detailed FOG regulations for 1 cities in the state.
What size grease trap do I need in District of Columbia?
Grease trap sizing in District of Columbia depends on your establishment's flow rate, number of fixtures, and local code requirements under the IPC. Use our free sizing calculator for a recommendation tailored to your setup.
Regulations change frequently. Always verify current requirements with your local wastewater authority or plumbing inspector before making compliance decisions. Last updated: March 2026.