For operations managers overseeing multiple venues and event types, getting numbers right keeps footfall moving, protects guest experience and demonstrates clear duty-of-care.
Our latest guide has been written to give UK event professionals a practical way to calculate how many toilets are required for an event. Using our experience of HSE guidance and The Purple Guide, we have put together this easy-to-use checklist suitable for every type of event including festivals, sporting events, corporate functions and premium hospitality settings.
We’ve considered per-capita provision, how alcohol and refreshments affect demand, why female and accessible toilets should drive your numbers, and when luxury toilet hire becomes a strategic decision rather than a “nice to have”.
Use this handy checklist to compare providers, when using an event toilet calculator or just to standardise your supply of portable toilets across multiple events and venues. It will take the guesswork out of compliant planning.
Confirm event basics
• Estimate peak attendance, using worst-case scenario
• Gate/open hours and busiest hour (needed for queue modelling)
• Are there refreshments? (if yes = increase provision)
Apply baseline guidance
Use The Purple Guide as your reference for outdoor-event sanitation planning — it contains detailed tables and servicing advice you must follow for duty-of-care. For minimum workplace-style provision refer to HSE for baseline sanitary requirements.
• Use per-capita rules of thumb (start here, then adjust). For short-duration events under 6 hours with limited food/drink, aim for roughly 1 toilet per 100 attendees (female), with additional male urinals. For longer events or where food/alcohol is served, move towards 1 toilet per 75 (female) or more to avoid queues. Local authority practice often recommends these step-ups when refreshments/alcohol are present.
• Gender split & urinals. Assume a mixed audience, planning female toilet provision as the driver as women typically need more cubicles. Add male urinals to reduce queuing. Follow local Purple Guide tables for specific ratios where possible.
• Accessibility & minimums. Always include accessible units (at least one per site; ratio recommendations typically suggest at least one accessible unit per 20 standard units). Ensure wheelchair access and room for carers.
• Handwashing & hygiene. Provide handwashing at a suitable ratio (aim for 1 handwash per 2–5 toilets depending on setup) and ensure soap, paper towels or dryers, and waste bins. Food handlers need mains-connected sinks where required.
• Servicing frequency & waste planning. Specify servicing frequency based on event length/attendance — full-day festivals need more frequent emptying and restocking than short events. Confirm provider service windows and emergency callouts in your contract.
• Location & crowd flow. Distribute units across the site (not all in one place). Place near refreshment areas, stages and family zones to reduce cross-site walking and queues. Provide clear signage and lighting for night events.
• Adjust for audience & atmosphere. Family areas, VIP/luxury toilets, and accessible areas require higher standards and more cubicles. For luxury toilet hire, factor in larger units, attendants, and higher servicing standards — they reduce perceived wait time and protect brand experience.
• Simulate queues & add contingency. Run a simple calculator: attendees × peak hour % ÷ average uses per person per hour = required throughput → convert to cubicles by average use time (e.g., 2–3 minutes). Add 10–20% contingency for alcohol or unpredictable surges. Many suppliers provide an event toilet calculator to speed this up.
• Document & sign off. Record the calculations, provider specs, servicing schedule, and responsible contacts in your event management plan. Cross-check with local authority or site licence conditions and The Purple Guide requirements before final sign-off.
Event toilet hire from JB Event Facilities
With over 30 years’ experience in the event industry, JB Event Facilities are more than qualified to help you with all of the above.
Our fleet of luxury portable toilets includes a wide range of units, each with well-equipped and spacious vanity areas, that support compliance and HSE regulations. All units comprise separate male/female sections and our Luxury 8-Bay Toilet can be converted easily into a single-gender or gender-neutral facility.
In addition to our portable disabled toilet, we also supply a Luxury Accessible Toilet & Shower Combi and a High Dependency Unit (HDU).
All trailers are installed fully stocked with paper consumables and luxury toiletries, which we replenish as part of our scheduled maintenance and servicing plan. Maintenance and servicing is arranged to suit individual event needs, and all waste is removed for ethical disposal.
Our experienced team will work collaboratively with you to calculate numbers of units needed and we will complete all HSE required paperwork.
Contact us
For any help with your capacity planning, please get in touch today via email at info@jbeventfacilities.co.uk or telephone on 01280 851200.
