What size portable toilet do I need for my event or construction site?
The answer depends on how many people you're serving and for how long. On a construction site, OSHA 1926.51(c)(1) sets the minimum: one toilet facility for 20 workers or fewer, then one toilet seat and one urinal per 40 workers up to 20, and one per 50 at 200 or more. For events in Knoxville, traffic matters too. A wedding with 100 guests for four hours needs different math than a festival with foot traffic all day. Call with your headcount and duration, and Knoxville Porta Pros sizes it right. A standard unit is about 44 by 48 inches on the ground, so placement is also part of the fit.
How often does a holding tank or septic tank need pumping?
A residential septic tank is typically pumped every 3 to 5 years, driven by tank size and household size. A holding tank on a portable toilet gets serviced based on the number of users. One service visit per week for up to 10 users over a 40 hour week is the baseline interval under ANSI/PSAI Z4.3. Higher use or hotter weather means more frequent service. Knoxville Porta Pros schedules it based on your actual conditions, not guesses. A grease interceptor is pumped when fats, oils, grease and solids reach 25 percent of the liquid depth, so it's a different trigger than a septic tank.
What do I need to know about ADA accessible restrooms?
An ADA accessible porta potty must meet specific standards. ADA Standards section 213.2 requires that where single-user units are clustered, at least 5 percent, and never fewer than one, must be accessible. The minimum clear door opening width is 32 inches under ADA Standards section 404.2.3, and you'll need a 60 inch diameter turning circle inside per ADA Standards section 304.3.1. An accessible route to the unit must be at least 36 inches wide under ADA Standards section 403.5.1. Knoxville Porta Pros delivers accessible units that meet these requirements. If you're planning a marathon or county fair in Knoxville, tell us upfront so we size the accessible cluster right.
What can and cannot go in a roll-off dumpster?
You can put construction debris, landscaping waste, general trash and junk in a roll-off dumpster. Do not put hazardous materials, tires, electronics, paint cans or appliances inside. Weight limits vary by dumpster size. A roll-off needs about 60 feet of straight clearance behind the truck for delivery, so confirm your space before ordering. Knoxville Porta Pros handles permit requirements and placement. We serve Knoxville, Karns (9.8 miles west), Powell (10.5 miles northwest) and Alcoa (14.8 miles south).
Does handwashing with sanitizer meet OSHA requirements?
No. 29 CFR 1910.141(d)(2) requires washing facilities with soap and with towels or a hand drying device. Hand sanitizer does not satisfy this. You need a portable sink or handwashing station with running water. One exception exists: if employees are applying paints, coatings, herbicides or insecticides, OSHA 1926.51(f)(1) requires dedicated washing facilities at those sites. Knoxville Porta Pros installs handwashing stations that meet code. Tell us your job type so we outfit the right equipment.
How much does a standard portable toilet cost per day, week or month?
Standard units range from about $100 to $350 per day depending on rental length and service needs. Weekly rates run $130 to $500. Monthly porta potty rental sits between $125 and $325. Delivery fees and service calls add to the total. Get a quote from Knoxville Porta Pros for your exact situation.
Can I rent a portable toilet for a weekend?
Yes. Weekend rates for a standard unit range from about $125 to $400. Delivery and service fees may apply. Call Knoxville Porta Pros for weekend availability and pricing.
What is a restroom trailer and when would I use one?
A restroom trailer is a multi-stall unit with flushing toilets, sinks and sometimes showers. You'd use one for a large event, film set, or construction project where volume and comfort matter. A 4-stall restroom trailer costs more than portable units but handles heavy use.
Do I need a permit to place a portable toilet in Knoxville?
Placement in the public right of way needs confirming with the city. Knoxville Porta Pros handles the logistics. Private property placements usually don't require a permit, but site-specific rules apply.
How do I arrange septic pumping service?
Call Knoxville Porta Pros or use the request a quote form. We'll schedule septic pumping at your convenience. Emergency service is available.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.
