Portable toilet

A portable (or mobile) toilet can be used in a variety of situations, for example in urban slums of developing countries, at festivals, for camping, or on boats. One well-known type of portable toilets are chemical toilets, but other types exist as well, such as urine-diversion dehydration toilets, composting toilets, bucket toilets, freezing toilets and incineration toilets.

A portable toilet is not connected to a hole in the ground (like a pit latrine), nor to a septic tank, nor is it plumbed into a municipal system leading to a sewage treatment plant; it can, by definition, be picked up and moved. Some portable toilets can be carried by one person, as in the main image, whereas others need heavy lifting equipment such as a truck and winch.

A chemical toilet collects human excreta in a holding tank and uses chemicals to minimize the odors. Chemical toilets include those on plane and trains (although many of these are now vacuum toilets), as well as much simpler ones.

The other name common in British English is "Elsan", which dates back to 1924. According to the Camping and Caravanning Club, "Today you will often see campsites refer to their Chemical Disposal Points as Elsan Disposal Points because of the history and popularity of the brand." The Canal and River Trust uses both brand names, in lieu of any unbranded term.

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