12. There are several different types of temporary toilet available for hire, from individual cubicles and urinals to larger blocks and trailer mounted units. The risk assessment should help to identify the type most suitable for the event.
13. Consider the likely peak usage of any toilet units and the time taken for cisterns to fill. Rapid and constant use of any toilet can cause the bowls to become unsanitary and prone to blockages.
14. Temporary mains units can be used if a sewer, drain, septic tank, or cesspool is available, provided there is an adequate water supply and sufficient water pressure available.
15. Recirculating self-contained units are not reliant on the availability of drains or water services.
16. Single self-contained portable units are versatile but are limited to a maximum number of uses before requiring servicing/emptying.
17. Trenches and latrines may be appropriate for some events. However, advice should be sought from the Environment Agency, or Scottish Environmental Protection Agency, and the Local Authority regarding the suitability of trenches at a specific event, and for any local guidelines ensuring safe and hygienic use. See National Regulations on the Safe Distance between Latrines & Waterpoints
18. Wherever non-mains units are used, provision should be made for safe and hygienic waste removal with holding-tank facilities available, if required.