ADA cluster rule: 12 porta potties at a November 2026 festival. Need an ADA unit?

Yes, a cluster of 12 standard portable toilets requires at least one ADA-compliant unit under the 2010 ADA Standards for Accessible Design. The ADA 5 percent cluster rule applies when multiple single-user portable toilets are grouped at one location, mandating that at least 5 percent (but no fewer than one) must be accessible. For your November 2026 festival with 12 units, you need one ADA-compliant portable toilet in the cluster, identified with the International Symbol of Accessibility.

Key ADA features include a wider door (at least 32 inches clear), interior turning space of 60 inches diameter or T-shaped, grab bars mounted at specific heights, and an accessible toilet seat height. The unit must be placed on level ground with a firm, stable surface to ensure safe wheelchair access.

Planning considerations for your festival: Estimate attendance to determine if 12 total units suffice. Industry guidelines suggest starting around one unit per 50-75 people for a four-hour event, adjusting for factors like alcohol service, duration, and crowd demographics (e.g., more women may require additional units). Ensure truck access for delivery and weekly service visits, and confirm local permit requirements for right-of-way placement if applicable.

Beyond compliance, including an ADA unit isn't just about rules, it ensures all guests can use facilities comfortably. If you have details on expected attendance, event hours, or alcohol service, I can help refine the unit count or discuss options like adding a handwash station. What's your estimated guest count and festival duration?