How Many Portable Toilets Do I Need?
How many portable toilets you need depends on the job, the head count and how long people stay. Get an estimate in four taps.
Free referral service. We don't own the units. We connect you with an independent Dallas portable toilet company.

How many portable toilets you need depends on who uses them. Construction sites follow OSHA's ratios. Events start from the head count and how long people stay, and every group of units needs an accessible one.
Construction Sites
| Workers on site | OSHA minimum |
|---|---|
| 20 or fewer | 1 toilet |
| 20 or more | 1 toilet seat and 1 urinal per 40 workers |
| 200 or more | 1 toilet seat and 1 urinal per 50 workers |
Events and Parties
For most private events there's no legal number. A common starting point is about 1 unit per 100 guests for a few hours, with more for all-day events, alcohol and hot weather. Public events in Dallas get their restroom count in the city's permit letter, and more restrooms may be required past 10 hours a day.
Accessible Units
Under the 2010 ADA Standards, 5 percent of the portable toilets clustered at each location must be accessible, rounded up to a whole unit, so most groups need at least one.
Use the calculator to get a count, or call (469) 405-5120 for portable toilet rental in Dallas.
Sources: OSHA 29 CFR 1926.51, Dallas Special Event Guidebook, 2010 ADA Standards for Accessible Design.
Need portable toilets in Dallas?
One free call to (469) 405-5120 connects you with a local company that delivers, services and picks up the units.
Free referral service. We don't own the units. We connect you with an independent Dallas portable toilet company.