On a Construction Site
To meet UK health and safety guidance, you must provide suitable and sufficient welfare facilities for your workforce.
Based on HSE guidance and British Standard BS6465-1:2006, a commonly applied ratio is:
One portable toilet unit per 7 workers for a standard working week.
If your site has visitors, multiple shifts or higher usage, additional units may be required to maintain compliance and comfort.
For Standard Events
As a general industry guideline:
One standard portable toilet unit will typically cater for between 50 to 100 guests over an 8-hour event.
For longer events, events serving alcohol, or where higher usage is expected, additional toilets are recommended to minimise queues and maintain hygiene standards.