Guides
Porta potty calculator
Enter workers or guests. Get the unit count with the OSHA or PSAI chart row behind it.
Open the calculator
Plan the count before the truck shows up.
How many units, what OSHA requires, how service works and what it costs. Short answers first, every number linked to its source.
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Planning
How many porta potties do I need?
For a jobsite, plan one standard unit per 10 workers on a 40-hour week, serviced weekly: that is the ANSI/PSAI Z4.3 standard.
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Compliance
OSHA porta potty requirements for construction sites
OSHA 29 CFR 1926.51(c) requires toilets on construction jobsites: one facility for 20 or fewer workers, one toilet seat and one urinal per 40 workers above that, and one of each per 50 workers at 200 or more.
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Cost
How much does it cost to rent a porta potty?
A standard porta potty rents for about $75 to $200 a day, $100 to $350 a week, or $100 to $300 a month with weekly service included, based on 2026 pricing published by two operators.
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Service
How often are porta potties cleaned?
The standard is once a week.
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Construction
Porta potty rental for construction sites
A construction site needs toilets from the first worker on site.
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Compliance
OSHA hand washing requirements for construction sites
OSHA requires washing facilities near the work, with soap and water, whenever a construction crew handles paints, coatings, herbicides, insecticides or other harmful contaminants.
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Service
Do porta potties freeze in winter?
Yes, an untreated porta potty tank can freeze, because the charge in it is mostly water.
Skip the reading. A dispatcher does the math with you, on the phone, in minutes.
Call (833) 680-0336One phone call places the order.
Tell dispatch your headcount, dates and address. The closest truck gets routed.
Call (833) 680-0336
Dispatch open Mon-Fri 8:30am-9pm ET, Sat 9am-3pm ET