How many people can a 4 stall restroom trailer handle?
Four stalls comfortably covers mid-size crowds, and the right count still depends on hours and whether alcohol is served. For construction, OSHA 1926.51(c) sets the baseline: one toilet facility for 20 workers or fewer, scaling up from there. A 4 stall unit often replaces four separate standard porta potty rental units on tighter sites where space matters more than raw fixture count. For events in Fairfield, pair this guide with how many porta potties do i need before you lock in a headcount, and check ADA restroom requirements if the venue expects public accessibility. If you're planning a wedding reception or a fundraiser near Suisun City, 2.1 miles southeast of Fairfield, four stalls plus a dedicated ADA accessible porta potty unit usually covers the gap.
What comes inside a 4 stall restroom trailer?
Expect flush toilets, sinks with running water, interior lighting and separate stalls, a step up from a deluxe flushable porta potty single unit. Hand washing here meets 29 CFR 1910.141(d)(2), which requires soap and towels or a hand drying device, not sanitizer alone, in non-construction workplaces. On active job sites, general sanitation still falls under OSHA 1926.51(c), and any crew degreasing equipment or applying coatings triggers washing facilities under OSHA 1926.51(f)(1). Water service on the trailer satisfies the intent of OSHA 1926.51(a)(1), which calls for an adequate supply of potable water at every place of employment. If your event also needs a wash-up point away from the trailer, add a handwashing station rental or a portable sink rental near food service. Compare stall counts against a 2 stall restroom trailer or step up to an 8 stall restroom trailer for a larger festival footprint.
Where can a 4 stall restroom trailer be placed on site?
Placement needs a level pad, nearby power, and a clear approach for delivery and pump-out, and city placement in the public right of way needs confirming with the City of Fairfield before drop-off. A roll-off style delivery on a comparable trailer chassis needs about 60 feet of straight clearance behind the truck, so measure driveways and gates ahead of time. Review the porta potty placement guide for grading and access notes that apply just as well to trailers. If the trailer will sit near a stage or vendor row, run it past a temporary fence rental plan so foot traffic doesn't cross service access. Fairfield job sites near American Canyon, 16.5 miles southwest, and Benicia, 20.8 miles southwest, both fall inside typical delivery range for this unit class.
| duration | low | typical | high |
|---|---|---|---|
| day | 175 | 800 | 2500 |
| week | 150 | 1397 | 1650 |
| weekend | 900 | 2000 | 3000 |
Multi-day construction rentals usually land toward the lower end of the day rate, while weekend event bookings for weddings or festivals sit closer to the weekend figure. If your event runs a single busy day, check the porta potty rental per day page for how daily pricing compares across unit types, and see monthly porta potty rental if the job stretches past a few weeks.
Frequently asked questions
How long can I rent a 4 stall restroom trailer for?
Anywhere from a single weekend to a multi-month construction schedule. Longer jobs shift toward week or month pricing rather than stacking day rates, and Fairfield Porta Pros services the unit on a regular rotation for the length of the rental.
Does a 4 stall restroom trailer need a water and power hookup?
It runs best with a nearby water source and standard power, though many units carry onboard tanks and lighting for sites without hookups. Ask about your specific site when you request a quote.
Is a 4 stall restroom trailer ADA accessible?
Not by default. ADA Standards section 213.2 requires at least one accessible unit where portable toilets are clustered, and most 4 stall trailers pair with a separate ADA unit rather than building a ramp into the trailer itself.
How often is the trailer cleaned and serviced?
Service intervals follow ANSI/PSAI Z4.3 as a baseline, with weekly service common for lighter use and more frequent visits scheduled for high-traffic events or full crews.
Can I rent a 4 stall restroom trailer for a construction site in Fairfield?
Yes. Crews use it alongside construction site services and construction dumpster rental, and toilet counts still follow OSHA 1926.51(c) for the crew size on site.
Next step
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