Which water filter to buy?

[Harvestman]

I use an msr miniworks pump. If I'm worried about the water quality after that then I boil the water. Never had a problem.

 

[spiritwalker]

alot of foreign water upset stomaches (and by this i dont mean all) is more from the mineral content of the water (assuming you mean from their taps) you can acustom yourself to it if there for a longish period by adding it to bottle water and upping the tap water content bit by bit, but this isnt really related to your intended post

Thanks! TBH I didn't even think of all that - theres a lot more to it.

When I was in Spain last the water gave me an upset stomach for ages. Would that just be down to different bacteria in the water? What would you suggest to prevent that happening when I'm drinking what in other countries.