Springfield Portable Chemical Toilet 11 litres Portable chemical toilets are a practical option, particularly for trailerable boats, in regions where sewage is not permitted to be discharged overboard. The toilets consist of an upper fresh water holding tank and a sealed lower waste tank locked with a positive catch. The Springfield toilet is manufactured of a light, durable moulded high density polyethylene which facilitates easy cleaning. The freshwater tank utilises a simple but reliable bellows flush pump. Waste tank separates from rest of toilet to allow emptying into a domestic toilet or sewage collection point.