Plastic Mineral water in the ABC trek is banned, it's forbidden for environmental concern and we are opposed to the use of disposable plastic bottles on any of our trips to Nepal Himalayas. While trekking to Annapurna Base Camp few places have the Safe Drinking Water Station where you can buy UV filtered drinking water at minimal costs - and almost all lodges have water filter can where you can always refill your bottles with boiled, cooled and filtered water at little costs.