How Many People Can Use a 4 Stall Restroom Trailer?
Four stalls comfortably serve a mid-size crowd, and Saint George Porta Pros builds each trailer around that math. Think 100 to 300 guests over a few hours, or a job site running two shifts. For construction, OSHA 1926.51(c)(1) sets the ratio at one toilet seat for every 20 workers up to 20, then scales from there, so a 4 stall unit can often cover a crew of 60 to 80 without stacking extra units. For weddings or festivals, pull numbers from how many porta potties do I need before you book, since guest flow at a reception looks nothing like a jobsite shift change. If your event runs past dark, pair the trailer with a light tower rental near the entrance path. Saint George summer events especially benefit from that extra visibility once the sun drops.
What Comes Inside a 4 Stall Restroom Trailer?
Each stall gets its own sink, mirror and flushing toilet, closer to a real bathroom than a standard porta john rental. Interior finishes vary by trailer tier, and Saint George Porta Pros carries both a working-grade option and a luxury restroom trailer line for weddings and corporate events where appearance matters. Handwashing setups follow 29 CFR 1910.141(d)(2), which requires soap and a way to dry hands, not just sanitizer, so every trailer ships with both. If your event includes food service, a separate handwashing station rental near the serving area covers staff who need a quick rinse without walking to the trailer. Compare stall counts on the 2 stall restroom trailer and 8 stall restroom trailer pages if four doesn't quite fit your headcount. For accessibility, ADA Standards section 403.5.1 requires a 36 inch clear route to the door, and section 404.2.3 sets a 32 inch minimum door opening, both worth checking against your delivery pad before the trailer arrives.

Does a 4 Stall Trailer Need Hookups?
Most trailers run self-contained on fresh and holding tanks, but some models want a nearby power source for lighting and climate control. Saint George Porta Pros will tell you which trailer needs what before delivery day. If your site has no outlet within reach, ask about a temporary power pole rather than running an extension cord across a parking lot. Delivery itself needs clearance too. a roll-off truck needs about 60 feet of straight clearance behind it, and trailer deliveries want similar room to back in without clipping a curb or a fence line. If you're fencing the event grounds, a temporary fence rental or chain link temporary fence can route foot traffic away from the delivery lane. Saint George venues near Ivins, about 10.2 miles northwest, or Washington, 7.8 miles northeast, fall inside our normal delivery radius without extra fees.
| unit | duration | low | typical | high |
|---|---|---|---|---|
| trailer | day | 175 | 800 | 2500 |
| trailer | weekend | 900 | 2000 | 3000 |
| trailer | week | 150 | 1397 | 1650 |
| trailer | event | 2499 | 3500 | 3899 |
For a full cost breakdown by trailer size, see restroom trailer rental cost. Weekend bookings for weddings and small festivals tend to land near the middle of that range once delivery and pickup are both figured in.
Can I rent a 4 stall trailer for a construction site?
Yes. Crews running multi-week jobs often prefer a trailer over several standalone units, especially when workers need a real sink. Pair it with construction site services planning and check OSHA 1926.51(c) ratios against your crew size before finalizing stall count.
How often is a 4 stall trailer serviced?
Weekly service is standard for moderate use, following the ANSI/PSAI Z4.3 baseline interval. Higher traffic events or job sites may need more frequent pumping. Ask Saint George Porta Pros to schedule service around your event date or work shift pattern.
Is a 4 stall trailer wheelchair accessible?
Not automatically. ADA Standards section 213.2 requires that where units are clustered, at least 5 percent be accessible. Pair your order with an ADA accessible porta potty unit if your event or site needs guaranteed accessible capacity.
What size pad does delivery need?
Confirm ground clearance and a level surface before delivery day. See porta potty placement guide for pad and clearance basics that apply to trailers too, including slope and surface stability.
Does the trailer need a permit in Saint George?
Placement in a public right of way needs confirming with the city. Check porta potty permit requirements before locking in a delivery spot on any street-facing lot.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.
