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How many portable toilets do I need?
It depends on the number of people using them and how long they'll be there. For construction sites, OSHA 1926.51(c) sets the minimum: one toilet facility for 20 workers or fewer; one toilet seat and one urinal per 40 workers from 20 up; one toilet seat and one urinal per 50 workers at 200 or more. An event with 100 guests for a few hours needs fewer units than a week-long festival. Learn how to calculate your exact count and we'll confirm it when you call. If you're renting for a construction site in Charleston or a large wedding, we size the order for your crew and timeline.
What's the difference between a standard and a deluxe unit?
A standard porta potty is a basic toilet with a 60 to 70 gallon tank, about 44 by 48 inches on the ground and 92 inches tall. It's pumped once per week under normal use. A deluxe flushable porta potty has a flushing mechanism, better ventilation, and hand sanitizer. Both sit on a level surface and need about 60 feet of straight clearance behind a truck for delivery. Choose deluxe if your site is visible to clients or the public, or if your crew spends long hours there. Standard works for most construction jobs in Charleston. Pricing differs, so compare daily, weekly and monthly costs to fit your budget.
Do I need an accessible restroom?
Yes, if anyone on your site has mobility limits or uses a wheelchair. An ADA accessible porta potty meets ADA Standards section 213.2: at least 5 percent of single-user units in a cluster must be accessible, and never fewer than one. The door opening is at least 32 inches wide, the floor is stable and slip resistant per ADA Standards section 302.1, and operable parts require no tight grasping or twisting. Charleston Porta Pros delivers and services ADA units for construction sites, events and film sets. If you're unsure whether your site requires accessible restrooms, we'll help you figure it out.
How often are portable toilets serviced?
Standard service is once per week for up to 10 users over a 40 hour work week, which is the baseline interval under ANSI/PSAI Z4.3. High-traffic sites need service twice a week or daily. We pump the tank, replace toilet paper and hand sanitizer, clean surfaces and check for damage. If a unit is full or damaged outside the scheduled visit, call us for emergency service. Restroom trailers for large events are serviced daily or per your contract terms.
What goes in the dumpster and what doesn't?
Roll-off dumpsters accept most construction debris: wood, drywall, concrete, metal and roofing. They do not accept hazardous waste, tires, electronics, appliances or paint. Grease, oils and solvents are prohibited. If you're unsure about an item, ask before you toss it. We haul the full dumpster away and dispose of it properly. Charleston Porta Pros offers 10, 20, 30 and 40 yard sizes for residential renovations, construction projects and demolition. See what cannot go in a dumpster for the full list.
How much does a portable toilet cost per day?
Daily porta potty rental for a standard unit runs between $100 and $350, depending on your location within Charleston, delivery fees and service frequency. A weekly rental is cheaper per day than a single day, and monthly rates offer the best value for long projects. Delivery fees, service calls and pumping are separate. Request a quote with your dates and unit type for an exact price.
Can I rent a restroom trailer for an outdoor event?
Yes. Restroom trailers are fully self-contained with running water, flushing toilets, sinks and often air conditioning. They're ideal for weddings, festivals and marathons where guests expect real bathrooms. Trailers come in 2, 4 and 8 stall layouts. They need level ground and electrical hookup. Delivery and service are included in the rental cost. We handle setup, daily cleaning and tear down.
How do I know if my septic tank needs pumping?
A residential septic tank is typically pumped every 3 to 5 years, driven by tank size and household size. Signs you need service sooner: slow drains, gurgling sounds, wet spots in the yard or sewage backup. Have us inspect it if you're not sure. Charleston Porta Pros offers septic pumping and grease trap pumping for homes and restaurants. We dispose of waste legally and file records so you stay compliant.
What's required for a handwashing station on a job site?
OSHA requires washing facilities where employees apply paints, coatings, herbicides or insecticides per 1926.51(f)(1). Handwashing stations must supply soap and towels or a hand drying device; hand sanitizer alone doesn't meet the rule per 29 CFR 1910.141(d)(2). Charleston Porta Pros rents portable sinks and handwashing stations that connect to water and drain systems. We deliver, service and pick up.
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Tell us the address, the dates and the headcount. We size the order and confirm the route.