Porta Potty Rental for Special Events in Phoenix
Public events in Maricopa County need at least 1 toilet per 100 attendees within 200 feet when permanent restrooms are not adequate. The PSAI planning chart often calls for fewer units at short events and more at long ones, so check both and plan to the higher count.
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The county ratio is a minimum. PSAI's chart is built on how often people actually use restrooms over time. A 4 hour event for 1,000 people comes out at 8 units on the chart, while the county minimum is 10.
Accessibility applies to every public event. Plan at least 5% accessible units per cluster under federal ADA rules, at least one in Scottsdale, and 10% in Mesa.
The numbers for special events
Event restroom calculator
Units that fit
Standard Porta Potty
Truck access and a reasonably level pad. No water, no power.
ADA Accessible Porta Potty
A wider, level pad and an accessible route to the door.
Hand Washing Station
A level spot. No hookups.
Urinal Station
Level ground and truck access.
Planning checklist
- Add staff, vendors and volunteers to your headcount.
- Add 20 to 30% if it is 80F or hotter or alcohol is served.
- Keep toilets 25 feet from food vendors.
- Do not block sidewalks with units.
The rules that apply
| Source | What it says |
|---|---|
| Maricopa County Environmental Health Code, Ch. II Sec. 6 Reg. 5 | Public gatherings without adequate permanent toilets need at least 1 toilet per 100 attendees (or as the health officer requires), within 200 feet. |
| PSAI Extended Special Event Chart | Industry planning chart. Example: 1,000 guests need about 4 units for 1 hour, 8 for 4 hours and 12 for 8 hours. Add 20 to 30% when it is 80F or hotter or alcohol is served. |
| 2010 ADA Standards 213.2 Exception 3 | Where single-user portable toilets are clustered, at least 5% of the units in each cluster must be accessible, rounded up. 20 units means 1 accessible unit; 21 units means 2. |
| Maricopa County Special Event Requirements | Events with food: the coordinator registers 30 days ahead, lists the number of toilets, and keeps toilets 25 feet from food vendors. |
| Pinal County Ord. 2.151.040 | Small special events apply 60 days ahead; large events (1,000+ participants) apply 120 days ahead. The ordinance sets no toilet ratio. |
| Mesa Special Events Handbook (rev. Jan 2026) | 1 restroom per 100 attendees, or 1 portable per 300 if permanent restrooms sit within 200 feet. At least 10% must be ADA accessible. Weddings and funerals are not special events. |
Summaries checked against the source on 2026-11-03. Always confirm with your permitting office.
Questions people ask
How many porta potties per 100 guests?
Maricopa County sets at least 1 per 100 attendees at public gatherings without adequate permanent toilets.
Do I need a permit for portable toilets at an event?
The event may need a permit from your city or county. The operator needs a county permit to rent the units.
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