How many porta potties do I need?

The answer in 6 quick slides.

Walter Rental Works · (414) 392-3756

1 per 50

Events up to 4 hours

One standard unit for every 50 guests. Always round up.

Walter Rental Works · (414) 392-3756

1 per 40

Events of 5–8 hours

Longer parties use more. For 9+ hours, plan 1 per 30.

Walter Rental Works · (414) 392-3756

+1 per 5

Serving alcohol?

Add 1 unit for every 5 you counted — at least 1.

Walter Rental Works · (414) 392-3756

Open to the public?

ADA Standards §213.2: at least 5% of units in each cluster accessible, minimum 1.

Source: U.S. Access Board, 2010 ADA Standards

Walter Rental Works · (414) 392-3756

150 guests, 5 hours, bar = 5 units

150 ÷ 40 = 3.75 → 4. Plus 1 for alcohol = 5. Add 2 handwashing stations.

Walter Rental Works · (414) 392-3756