For a jobsite, plan on 1 toilet per 10 workers over a 40-hour week; for an event, plan on 1 unit per 50 guests for the first 4 hours. A 20-person crew needs 2 standard units minimum. South Suffolk crews and event planners both undercount by half more often than they overcount.
OSHA 1926.51(c) sets the real floor: 1 toilet seat for 20 workers or fewer, then 1 seat plus 1 urinal per 40 workers once you pass 20, dropping to 1 seat and 1 urinal per 50 workers at 200 or more. That table doesn't care how big South Suffolk's job is, it scales the same way everywhere. A 15-person framing crew needs 1 standard porta potty rental. A 60-person site needs at least 2 units under the 40-per ratio, and most supers round up to 3 so nobody walks across a muddy lot to the only stall. If your crew works with any paints, coatings, herbicides or insecticides, OSHA 1926.51(f)(1) also triggers washing facilities beyond a simple handwash station, so pair units with a handwashing station rental when that applies. Check OSHA portable toilet requirements before you order, and use construction site services to bundle toilets with a dumpster and fencing in one delivery.
Events run on headcount and hours, not headcount alone, because a 4-hour lunch crowd empties differently than an 8-hour festival crowd.
| Guests | 2-4 hours | 5-8 hours |
|---|---|---|
| Up to 100 | 2 units | 3 units |
| 100-250 | 3 units | 5 units |
| 250-500 | 5 units | 8 units |
| 500-1000 | 8 units | 12 units |
That's before alcohol enters the picture. Serving beer or wine pushes usage up sharply, so add 1 unit per 100 guests on top of the base count. A wedding reception with an open bar at 150 guests for 6 hours should plan for 5 units, not 3. Multi-day events need daily servicing built into the quote, not just more units sitting unused. See event restroom rental for full packages, or go straight to wedding restroom rental and festival restroom rental for format-specific counts. At least 1 unit in any cluster needs to meet ADA Standards 213.2, which requires 5 percent of units be accessible with never fewer than one, so budget an ADA accessible porta potty into every layout regardless of size.
Forty workers on a 40-hour week sits right at the OSHA 1926.51(c) breakpoint, so the crew needs 1 seat plus 1 urinal minimum, and most South Suffolk contractors add a second full unit rather than run one toilet at capacity all week. That's 2 standard porta potty rental units serviced under the ANSI/PSAI Z4.3 baseline of one visit weekly for light use, though a 40-person crew running full shifts usually needs twice-weekly service to keep tanks under the 60 to 70 gallon capacity. Add a handwash station if the crew is applying paints, coatings, herbicides or insecticides covered by OSHA 1926.51(f)(1). Check current numbers on the porta potty rental cost page before locking a bid, and use porta potty rental per day if the job runs under a week.
Three hundred guests for 6 hours with an open bar lands past the 250-500 bracket, so start at 8 units and add 3 more for the alcohol adjustment, landing near 11 units total. Split that between standard units and at least one deluxe flushable porta potty near the reception tent so guests aren't walking past the bar line twice. One of the 11 must meet ADA Standards 213.2 for accessibility, and the accessible unit needs a 60 inch turning circle inside per ADA Standards 304.3.1. Many venues in South Suffolk prefer a trailer over stacked single units at this headcount; compare options on restroom trailer rental and check whether a 4 stall restroom trailer covers the same guest count for less delivery hassle than 11 separate doors.
Most jobsites ordering toilets also need debris removal, and the size question comes down to volume and weight together. A 10 yard dumpster holds about 10 cubic yards, roughly 270 cubic feet, and suits a single-room renovation. A 20 yard dumpster runs about 22 feet long and holds roughly 540 cubic feet, typically rated for 2 to 3 tons of mixed debris. Step up to a 30 yard dumpster and you're looking at around 810 cubic feet and a 3 to 4 ton capacity, common on roofing tear-offs. A 40 yard dumpster tops out near 1,080 cubic feet and handles roughly 4 to 5 tons, the size most South Suffolk contractors pull for full home guts. Match the container to what's actually coming off site; a roll-off delivery needs about 60 feet of straight clearance behind the truck, so measure your driveway before you order. See dumpster sizes and dimensions for the full breakdown, 20 yard dumpster rental or 30 yard dumpster rental for direct booking, and dumpster weight limits before you load anything dense like shingles or concrete.
Yes, and the fix is service frequency more than unit count. A single-day count from the headcount table above holds for day two and day three as long as service intervals tighten to daily rather than the ANSI/PSAI Z4.3 weekly baseline. A 3-day county fair at 400 guests per day should keep the same 8-unit base from the 250-500 bracket but add daily pumping instead of a once-a-week visit. Skipping that adjustment is the single biggest complaint site services get on weekend festivals. Check county fair restrooms or golf tournament restrooms for tournament-length formats, and if you're running a race across multiple checkpoints, marathon and race restrooms covers staggered placement instead of one central cluster.
Pricing scales with unit count and duration, and the two move independently, so a 3-unit weekend costs differently than a 3-unit month.
| Unit | Day | Week | Month |
|---|---|---|---|
| Standard | $100-$350 | $130-$500 | $125-$325 |
| ADA | $200-$400 | $200-$400 | -- |
| Deluxe | $85-$1,200 | $150-$290 | -- |
A standard weekend rental runs $125 to $400 for a single unit, useful for a Saturday wedding that doesn't need a full week on site. Delivery fees run separately, typically $100 to $500 for a one-time day rate depending on distance and access. South Suffolk jobs out toward Carrsville, 16.1 miles west, or Franklin, 23.8 miles west, may run toward the higher end of that delivery band. See porta potty rental cost for the full pricing page, monthly porta potty rental for long jobsite runs, and porta potty rental checklist before you finalize an order.
Two units cover 100 guests for a 2 to 4 hour event; bump to three if the event runs 5 to 8 hours. Add one more if you're serving alcohol. That's the baseline before accessible unit requirements under ADA Standards 213.2 factor in.
A 30 yard dumpster typically holds 3 to 4 tons of mixed construction debris, depending on material density. Concrete and shingles fill weight limits faster than cubic footage, so check dumpster weight limits before loading heavy material.
A 20 yard dumpster holds roughly 540 cubic feet, built around a footprint near 22 feet long. That's double a 10 yard unit's roughly 270 cubic feet, useful when comparing 10 yard dumpster rental against the 20 yard size for a mid-size cleanout.
Once a crew passes 20 workers, OSHA 1926.51(c) requires a seat and a urinal per 40 workers, which effectively forces a second unit. Many South Suffolk contractors add the second unit earlier, around 15 workers, to avoid lines during breaks.
Yes. ADA Standards 213.2 requires at least one accessible unit in any cluster, with no exception for small orders. Order an ADA accessible porta potty alongside your standard units rather than treating it as optional.
A 40 yard dumpster generally handles 4 to 5 tons of mixed debris, with roughly 1,080 cubic feet of capacity. That size suits full home guts more than single-room jobs; see 40 yard dumpster rental for delivery specifics.
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