How Many Porta Potties Do I Need Under OSHA?
Start with headcount, then apply the OSHA table. A 15 person crew needs 1 unit under 1926.51(c). A 45 person crew needs 2 toilets and 1 urinal, since 40 crosses the first threshold. Our how many porta potties do I need guide walks through mixed crew sizes and multi-shift jobs. Duration matters too. A short punch-list job might only need a porta potty rental per day, while a framing crew running six months wants a monthly porta potty rental locked in at a flat rate. Standard units run $100 to $350 a day, with weekly terms between $130 and $500 depending on service frequency. If your site sits near Grandville, 4.0 miles west, or Kentwood, 6.4 miles east, the delivery windows are short and same-week placement is realistic. Some Wyoming crews also mix a standard porta potty rental for laborers with a deluxe flushable porta potty for supervisors or client walk-throughs. ANSI/PSAI Z4.3 sets a baseline service interval of once weekly for up to 10 users over a 40 hour week, which is the floor most contractors service against.
What Are the OSHA Portable Toilet Distance Requirements?
OSHA does not publish a hard distance-in-feet number for toilet placement on construction sites, so anyone quoting an exact footage from memory is guessing. What OSHA does require is potable water access under 1926.51(a)(1) and general sanitation coverage under 1926.51(c) that keeps facilities reasonably reachable during a shift. Practical placement in Wyoming comes down to site logistics: keep units close to the active work zone, clear of vehicle paths, and reachable without crossing excavation or overhead work. Our porta potty placement guide covers ground stability, delivery truck access and slope, since ADA Standards 302.1 calls for stable, firm, slip-resistant surfaces wherever an accessible unit sits. If your layout includes agricultural work, OSHA 1928.110 requires field sanitation facilities within a quarter mile walk of hand-labor employees, one per 20 workers, which is a different standard than general construction. Farms near Georgetown, 9.1 miles west, fall under this rule rather than 1926.51(c). Check our farm and agricultural restrooms page for that distinction before ordering.
Does Cal OSHA Portable Toilet Requirements Apply in Michigan?
No. Cal OSHA rules apply in California, not Michigan. Wyoming, MI, sites fall under federal OSHA construction standards, specifically 1926.51(c) for toilet ratios. If your company also runs jobs in California, Cal OSHA's construction sanitation rule tracks the same general structure as federal OSHA but is enforced separately, so don't assume a Michigan compliance plan transfers there. For Wyoming and nearby Walker, 11.9 miles north, and Plainfield, 16.7 miles north, federal OSHA governs. General industry workplaces, as opposed to construction sites, fall under 29 CFR 1910.141(c)(1)(i) instead, which uses its own employee-count table. If you're staffing an office trailer alongside a job site, that distinction decides which ratio applies. Our construction site services page breaks down which standard covers which crew type, and our OSHA portable toilet requirements overview stays the anchor reference for Wyoming contractors juggling both site types on one contract.
Are Handwashing Stations Required Alongside Portable Toilets?
Sometimes, depending on the work. 1926.51(f)(1) requires washing facilities specifically where workers apply paints, coatings, herbicides or insecticides, or face similar contaminant exposure. It is not a blanket handwashing mandate for every job site. General industry workplaces follow 29 CFR 1910.141(d)(2), which requires soap and towels or a hand-drying device; hand sanitizer alone does not satisfy it. Painting crews and pesticide applicators working around Wyoming should pair a handwashing station rental with their toilets rather than relying on sanitizer stations alone. Our hand sanitizer station rental page explains where sanitizer is a fine supplement but not a substitute. For ADA compliance on multi-unit sites, ADA Standards 213.2 requires at least 5 percent of clustered single-user units be accessible, never fewer than one. Our ADA accessible porta potty page and ADA restroom requirements guide cover turning radius and door clearance details for that unit.
| unit | duration | low | typical | high |
|---|---|---|---|---|
| standard | day | 100 | 150 | 350 |
| standard | week | 130 | 200 | 500 |
| ada | day | 200 | 230 | 400 |
| deluxe | week | 150 | 250 | 290 |
Larger builds often need more than toilets. A roll-off dumpster rental or temporary fence rental rounds out site setup, and a storage container rental covers tools and materials between phases. If your Wyoming project needs a mobile office too, see mobile office trailer rental.
Frequently asked questions
How many porta potties does OSHA require per worker?
One toilet per 20 workers up to 20 people, then 1 toilet and 1 urinal per 40 workers, scaling to 1 per 50 at 200-plus, under 1926.51(c). Crew size and shift length both affect the real number you need on a Wyoming job site.
Do porta potties need a permit in Wyoming, MI?
Permit rules for placement in the public right of way need confirming with the city before you set units at the curb. For most private job sites, no permit applies. Check our porta potty permit requirements page before ordering.
Can I rent a portable toilet for just one day?
Yes. Daily rentals run in the $100 to $350 range for a standard unit, ideal for one-day events or short punch-list work. See porta potty rental per day for details on same-day and next-day delivery around Wyoming.
Is hand sanitizer enough to meet OSHA handwashing rules?
No, not under 29 CFR 1910.141(d)(2), which requires soap and towels or a hand-drying device for general industry. Sanitizer works as a supplement, not a substitute, especially for crews covered under 1926.51(f)(1) contaminant exposure rules.
What size crew needs an ADA-accessible unit?
Any cluster of single-user portable toilets needs at least one accessible unit under ADA Standards 213.2, regardless of crew size. Even a two-unit cluster on a small Wyoming site technically triggers that minimum.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.