For hikes in the tropical jungles in Indonesia, currently most travellers bring a 1.5 litre disposable plastic bottle of water, which are then refilled from boiled water (boiled using firewood) at stops/rest breaks.
The group size is up to six tourists, plus two or three porters/guides.
There is plentiful water in the rivers, but obviously it needs treatment before drinking.
I am looking at something for the guides to bring that is preferable to the current boiling-water-in-a-pan approach.
Obviously filters that need to be changed too frequently are out of the question.
