People often ask for a portable toilet as if it were one thing. Construction and event rentals differ in what the law requires, what the unit needs to be, how often it is serviced and what going wrong looks like.
| Construction | Event | |
|---|---|---|
| Governing rule | OSHA 29 CFR 1926.51 — a federal requirement | No federal count requirement; venue and local rules may apply |
| Count driven by | Peak crew size on site | Attendance, duration, alcohol |
| Duration | Weeks to years | Hours to a weekend |
| Servicing | Weekly or more, ongoing | Usually none during the event |
| Priority | Compliance and proximity to the work | Capacity at peak, appearance, accessibility |
| Failure looks like | An OSHA citation, or crews leaving the work area | A queue at the worst possible moment |
The count is set by Table D-1 of the OSHA standard: one toilet for 20 or fewer workers, one seat and one urinal per 40 workers above 20, one per 50 above 200. Beyond the count, the standard requires that facilities be readily accessible — a unit too far from the work is not considered provided — and that handwashing be available. Mobile crews with transport to nearby facilities within roughly ten minutes are treated differently under 1926.51(c)(4).
Practically, construction units need to be durable, secured against tipping, positioned where they will not be in the way of equipment, and reachable by a service truck every week for the life of the project.
Events have no equivalent federal count rule, but they have a harder capacity problem, because usage is concentrated rather than spread across a workday. Planning figures start with attendance and duration, add fifteen to twenty percent where alcohol is served, and account for peaks after meals and at the end of the night.
Events also carry expectations construction sites do not: units that look presentable, are lit if the event runs into the evening, include handwashing near food service, and include ADA-accessible units on a firm and level route.
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The OSHA construction requirement, event planning ratios, and how alcohol and duration change the math.
Portable SanitationTypical weekend and monthly rates, what servicing includes, and the charges that surprise people.