Washing facilities
You must have a washbasin which is suitably located. It must have hot and cold running water, soap and materials for hygienic drying, for example paper towels or an electric hand dryer.
Portable units such as Teal are often used as a hand wash station.
You must have adequate facilities such as hot and cold water for washing equipment. Check with the event organiser if you have to provide your own water supply.
You will also need facilities to store waste water.