How Many Special Event Portable Toilets Do You Need for Your Salt Lake City Event?

The Basic Formula Every Event Planner Should Know

A reliable starting point is one portable toilet unit for every 50 guests at an event lasting up to four hours. That means a 200-person gathering would typically need a minimum of four units. This formula comes from widely accepted industry standards and works well as a baseline for most casual outdoor events, community gatherings, and small festivals.



Keep in mind this number is a starting point, not a fixed rule. Several factors can push your special event portable toilets count up, and we will cover each one below.

What Factors Adjust Your Unit Count?

Event duration is one of the biggest variables. As a general guide:\

• For events lasting 4 to 6 hours, add roughly 20% more units to your baseline count.
• For events lasting 6 to 10 hours, consider adding 30% to 40% more units.
• For multi-day events, plan for a dedicated servicing schedule and potentially more units on-site at any given time.

Alcohol service also increases demand noticeably. If your event includes a beer garden or open bar, bump your unit count up by at least 20% beyond your adjusted baseline.

Crowd demographics matter too. Events that draw families with young children or older attendees typically see higher restroom usage than events with a predominantly young adult crowd.

ADA-Accessible Units Are Not Optional



Any public event in Salt Lake City, UT, serving guests with disabilities must include ADA-accessible portable restroom units. A common guideline is to include at least one accessible unit for every ten standard units in your order. These larger units provide extra interior space and accommodate wheelchairs and mobility aids.

Park venues throughout the Salt Lake Valley, including Sugar House and Liberty Park, often have accessibility requirements written into their permit conditions. When you rent special event portable toilets for a permitted venue, confirm ADA requirements with your provider before placing your order.

Sizing for Utah's Outdoor Event Conditions



Salt Lake City, UT, sits at approximately 4,300 feet above sea level, and summer temperatures regularly climb above 90 degrees Fahrenheit. High heat increases how much guests drink, which directly increases restroom traffic. For summer events in July or August, consider adding an additional 10% to 15% to your unit count on top of your other adjustments.

Outdoor venues near the foothills or along the Wasatch Front can also involve uneven terrain, which affects unit placement. Account for stable ground when planning your layout so units remain level and accessible throughout the event. Salt Lake Valley can also experience strong wind gusts, especially in spring, so discuss secure anchoring with your rental provider when planning springtime events.

A Simple Sizing Reference Guide



Use these breakdowns as a quick reference when planning your special event portable toilets order. Always add at least one ADA-accessible unit to any order regardless of event size.

For a gathering of 100 guests lasting up to 4 hours, plan for 2 standard units, plus 1 additional unit if alcohol is being served. If that same group stays for 4 to 8 hours, bring that count up to 3 units, with 1 additional unit for alcohol service.

For 250 guests at an event up to 4 hours long, 5 units is a solid starting point, with 1 to 2 more added if alcohol is available. Stretch that event to 4 to 8 hours and you are looking at 7 units, plus 2 more for alcohol service.

For larger events with 500 guests running up to 4 hours, plan on 10 units and add 2 to 3 more if alcohol is being served. For a full 4 to 8 hour event at that size, target 13 to 15 units, with 3 additional units if there is an open bar or beer garden on-site.

Don't Forget Hand-Washing Stations



Hand-washing stations are a separate consideration from the units themselves. A common standard is one wash station for every two to three portable toilet units. For food-service events or those taking place during cold and flu season, you may want to exceed that ratio.

We offer portable wash stations alongside our event toilet rentals to make it easy to bundle everything in one order.

Ready to Get the Right Count for Your Event?



Affordable Portables has been serving Salt Lake City, UT, and surrounding areas for over 19 years, providing special event portable toilets for festivals, races, outdoor concerts, community gatherings, and more. Whether you need a handful of units for a neighborhood block party or dozens for a large-scale festival, we will help you build the right order with a free estimate.

You can read what past customers have to say by visiting our Google Business Profile. When you are ready to plan, reach out to our team for a free quote tailored to your event size, duration, and venue, or call us today at 801-359-8200 to get started.