If you happen to be going off the grid on your trip. It is always a good idea to make sure that the water you drink is safe. The locals may drink the local water with no problems because their system is used to it. You on the other hand, may be at risk of getting really sick during your adventure if the water is not properly filtered. Instead of bringing bottled water, there are some portable water filter products out there that are very good.,
Full disclosure, I do receive affiliate fees from posting this product on my blog.
The Steripen Classic 3 UV filter is battery operated with 4 AA batteries. It takes, 90 seconds to filter 1 litre of water. The UV lamp is built to last around 8000 treatments. Lithium or Nimh batteries will filter about 100 liters of water. It is recommended to use rechargeable batteries and carry spare batteries. If you are totally going to somewhere where they may not be any electricity, a solar charger would also be a great idea. So if you are going off the grid a Steripen will keep your drinking water clean.