Standard porta potty
$125 to $250 a weekend
How many porta potties does OSHA require on a jobsite?
OSHA 1926.51(c) sets the construction industry table: 1 toilet seat for 20 or fewer workers, then 1 toilet seat and 1 urinal per 40 workers once you cross 20, dropping to 1 seat and 1 urinal per 50 workers at 200 or more. A 35-person crew in Memphis falls into the second bracket: 1 toilet and 1 urinal, sometimes split into two combo units depending on layout. Bigger sites near Collierville or Germantown often run two crews on staggered schedules, which changes where you place units, not how many you need. For general industry sites, not construction, the applicable rule is 1910.141(c)(1)(i) instead. Full guidance lives on our OSHA portable toilet requirements page, and if you're still deciding between a basic unit and something nicer for supervisors, compare the standard porta potty rental against the deluxe flushable porta potty.
How many porta potties do I need for an event?
Start with 1 unit per 50 guests for a 4-hour window, then adjust up for longer days or alcohol service. A wedding of 150 guests over 6 hours in Germantown, 11.4 miles east of Memphis, typically lands around 4 to 5 standard units plus one ADA-accessible unit. Add alcohol and that ratio tightens, because bladders don't wait as politely. Festivals and concerts run heavier: multiply your base count by roughly 1.5 if beer or wine is being poured. Multi-day events need servicing built into the plan, not just more units sitting unused on day two. Our event restroom rental and festival restroom rental pages break this down by event type, and wedding restroom rental covers the alcohol adjustment in more detail.
Worked example: 200-person outdoor festival, 8 hours, with beer
Base ratio: 200 guests divided by 50 equals 4 units for a standard 4-hour event. Double the hours to 8 and you roughly double the need, landing near 7 to 8 units. Add the alcohol multiplier and you're at 10 to 12 standard units, plus at least one ADA unit per ADA Standards 213.2, which requires 5 percent of clustered units to be accessible with a minimum of one. A standard unit rents for a day in the $100 to $350 range, so a festival this size in Memphis often makes more sense priced by the event, which typically runs $200 to $800 per unit depending on service level. Check porta potty rental cost for the full breakdown, and if the layout runs long distances, review our porta potty placement guide before you finalize the site map.
Worked example: 35-person construction crew, 6-month job
OSHA 1926.51(c) puts a 35-person crew at 1 toilet and 1 urinal, but most contractors add a second unit once you factor in lunch rushes and multiple trades on site at once. A 6-month job in Memphis usually books at the monthly rate, which runs $125 to $325 per standard unit depending on service frequency and add-ons. ANSI/PSAI Z4.3 sets the baseline service interval at once weekly for up to 10 users over a 40-hour week, so a 35-person crew needs either more frequent service or more units to spread the load. Site conditions near roll-off delivery zones matter too. A roll-off truck needs about 60 feet of straight clearance behind it, which affects where you place both the dumpster and the toilets. See construction site services and monthly porta potty rental for the full monthly pricing picture.
Do I need more units if I'm renting a dumpster too?
No, dumpster size and porta potty count are separate calculations, but they share the same site planning problem: clearance and placement. A 10 yard dumpster runs about 12 feet long, 8 feet wide and 3.5 feet high, while a 20 yard dumpster runs closer to 22 feet long by 8 feet wide by 4.5 feet high. A 20 yard dumpster holds roughly 2 to 3 tons of debris, and a 30 yard holds closer to 3 to 4 tons depending on material density; a 40 yard dumpster can take on 4 to 5 tons and offers close to 40 cubic yards, or about 1,080 cubic feet, of capacity. Renting both together from Memphis Porta Pros means one delivery conversation instead of two. Compare sizes on our dumpster sizes and dimensions page, check the 30 yard dumpster rental or 40 yard dumpster rental options, and confirm what's allowed on what cannot go in a dumpster before loading day.
What if my site has no running water?
Bring a handwashing station regardless of whether you're required to. 29 CFR 1910.141(d)(2) requires soap and towels or a hand-drying device at washing facilities, and hand sanitizer alone doesn't satisfy that rule. If your crew is applying paints, coatings, herbicides or insecticides, OSHA 1926.51(f)(1) kicks in specifically for those contaminant contexts, requiring dedicated washing facilities beyond the general toilet count. Agricultural sites fall under a different standard: OSHA 1928.110 requires one field sanitation facility per 20 hand-labor employees, reachable within a quarter mile walk. Farms outside Memphis, including operations near Marion, 18.6 miles northwest, or Hernando, 20.3 miles south, need to plan handwashing stations into that quarter-mile radius rather than clustering everything at one entrance. Our handwashing station rental and handwashing requirements pages walk through placement, and farm and agricultural restrooms covers the field sanitation angle specifically.
Should I add extra units for accessibility?
Yes, if you're clustering single-user units, ADA Standards 213.2 requires at least 5 percent of them to be accessible, with a minimum of one regardless of total count. That means even a small job site with just 3 or 4 standard units still needs one ADA unit sitting in the mix. ADA units need a 60 inch turning circle inside per ADA Standards 304.3.1, a minimum 32 inch clear door opening per 404.2.3, and an unobstructed 36 inch route to reach it under 403.5.1. Ramp access, where needed, can't exceed a 1:12 slope per ADA Standards 405.2. An ADA unit rents for $200 to $400 a day or $120 to $240 a week, and it's worth pricing separately since it's not interchangeable with a standard unit. Full detail is on ADA accessible porta potty and ADA restroom requirements.
FAQ
How many porta potties do I need for 100 people?
For a 4-hour event, plan on 2 units using the 1-per-50 ratio, plus one ADA unit per ADA Standards 213.2. Stretch the event to 8 hours and bump to 3 to 4 units. Add alcohol service and go up another unit. Memphis venues booking 100-guest gatherings usually land in that 3 to 5 unit range.
How many tons does a 30 yard dumpster hold?
A 30 yard dumpster typically holds around 3 to 4 tons, depending on what's inside. Heavy debris like concrete or shingles fills the weight limit long before it fills the volume. Check dumpster weight limits before loading a mixed demolition job to avoid overage fees.
How many feet is a 20 yard dumpster?
A 20 yard dumpster runs roughly 22 feet long, 8 feet wide and 4.5 feet tall. Clearance behind the delivery point still needs about 60 feet for the roll-off truck to maneuver. Confirm your driveway or street access before booking on the roll-off dumpster rental page.
How many cubic feet are in a 10 yard dumpster?
A 10 yard dumpster holds about 270 cubic feet, enough for a small bathroom remodel or a garage cleanout. It's the smallest standard size most Memphis renters book. See 10 yard dumpster rental for full dimensions and typical use cases.
Do I need a permit for a porta potty on the street in Memphis?
Placement in the public right of way needs confirming with the city before delivery day. We don't guess at ordinance numbers here, so check with the relevant Memphis department directly. Our porta potty permit requirements page has more on how to ask the right question.
How often do porta potties get serviced on a long job?
ANSI/PSAI Z4.3 sets a baseline of one service visit per week for up to 10 users over a 40-hour week. Larger crews or multi-shift sites usually need twice-weekly service to keep pace. See how often are porta potties cleaned for the full servicing schedule.
What we rent
Four units cover almost every job
Typical Memphis ranges, not a quote. Delivery is $50 to $150 and a weekly service visit $30 to $60. See the full cost breakdown.
Deluxe flushing
$200 to $350 a weekend
ADA accessible
$199 to $300 a weekend
Restroom trailer
Quoted by stall count
The rest of the yard
One mobilisation, not three
Roll off dumpsters10, 20, 30 and 40 yardTemporary fencingPanels 6 feet by 12 feetStorage containers20 foot and 40 footHandwashing stationsSinks and sanitiser standsSeptic and grease trapsPumping, cleaning, emergenciesSite power and lightLight towers, temporary poles
We deliver across Shelby County and the surrounding metro:
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