Washington DC porta potty requirements
The District is not an OSHA State Plan for private employers. Federal OSHA Table D-1 is the construction toilet floor. The extra DC layer is placement: sidewalk, curb, or alley needs a DDOT public space permit; National Mall events go through NPS. This is planning guidance, not legal advice.
Rule: Federal OSHA Table D-1 + DDOT public space. OSHA 29 CFR 1926.51

DC crew-size calculator
Slide peak headcount. Legal floor is the regulation. Recommended is what actually stays usable through the week.
Legal toilet floor
1
1 urinal also required
Recommended units
4
1 per 10 so weekly service stays sanitary
Recommended hand-wash
2
1 per 20 workers, on the exit path
We do not rent ADA units yet.
Source: OSHA 29 CFR 1926.51. Not legal advice. Count the largest simultaneous crew.
Quote 4 unitsWhat the rule actually says
- Private construction sanitation follows OSHA 1926.51 Table D-1
- A filthy or locked unit does not count as provided
- Private property: GC / landlord rules
- Sidewalk, curb, or alley: DDOT public space permit through TOPS
- National Mall and NPS parkland: National Mall special event permit
The recommended column uses 1 unit per 10 workers so weekly service stays sanitary.
Get the placement permit before the truck rolls if the pad is in public space.
FAQ
Do I need a permit to rent a porta potty in DC?
Private construction usually does not need a special porta potty permit. Occupying sidewalk, curb, alley, or other public space requires a DDOT public space permit. Mall and park events go through NPS.
Does DC follow OSHA Table D-1?
Yes for private construction. Federal OSHA covers DC workplaces from the Baltimore-Washington area office.