One of the most common questions we hear from Jacksonville event planners is "how many porta potties do I need?" Getting this right ensures your guests stay comfortable without long lines, while avoiding the expense of renting more units than necessary.
The Basic Formula
A commonly used starting point for event planning is:
1 portable toilet per 50 guests for events lasting up to 4 hours without alcohol service.
This is a baseline. Several factors can increase or decrease the number you actually need.
Quick Reference Chart
| Guests | 4-Hour Event | 8-Hour Event |
|---|---|---|
| 50 | 1-2 units | 2-3 units |
| 100 | 2-3 units | 4-5 units |
| 250 | 5-6 units | 8-10 units |
| 500 | 10-12 units | 15-18 units |
| 1000 | 20-25 units | 30-35 units |
These estimates assume no alcohol service. Add 15-20% more units when alcohol is served.
Factors That Increase Need
Alcohol Service
Events with beer, wine, or cocktails see significantly higher restroom usage. Add 15-20% more units when alcohol is served.
Food Service
Events with meals (rather than just light snacks) also increase restroom usage. Factor this into your planning for catered events.
Event Duration
Longer events need more capacity. For events over 6 hours, consider adding 25-50% more units or arranging mid-event servicing.
Gender Mix
Events with a higher percentage of women typically need more units, as women generally take longer per restroom visit.
Jacksonville's Climate
Hot weather events lead to higher beverage consumption, which increases restroom usage. Summer events may need additional capacity.
Factors That May Reduce Need
- Nearby permanent facilities: If your venue has some restrooms available, you may need fewer portable units
- Short events: Cocktail hours or events under 2 hours may need fewer units
- Low beverage consumption: Morning events with minimal drinks served
Don't Forget ADA Units
For public events in Jacksonville, include at least one ADA-accessible unit. These larger units accommodate wheelchair users and guests with mobility challenges. A good guideline is one ADA unit per 10-15 standard units, with at least one per event.
Placement Tips
- Distribute units throughout the venue rather than clustering in one spot
- Place units near food service areas but not immediately adjacent
- Ensure clear signage directing guests to facilities
- Keep units accessible but slightly out of the main event flow
When to Call for Custom Planning
For events over 500 guests, multi-day events, or unique circumstances, call us directly. We can help plan the right setup based on your specific event details.