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Related Expert Advice articles
Here are our favorite reusable water bottles for hiking, running, cycling, everyday use and more. Find the best water bottle at REI from YETI, Hydro Flask, Ocean Bottle and more.
Read full article: The 11 Best Water Bottles of 2025: Staff Picks
Filter vs. Purifier
- Filters: Remove protozoa (Cryptosporidium, Giardia) and bacteria (E. coli, Salmonella)—main concerns in the U.S. and Canada.
- Purifiers: Also combat viruses such as hepatitis A, rotavirus and norovirus.
Filter Types
- Straw: Light, easy to use. Only works at water source.
- Bottle: Lightweight, quick, affordable. Water volume limited by bottle size.
- Gravity: Easy to use, handles large quantities of water, has a replaceable element.
- Pump: Precise, works in shallow water, has a replaceable filter. Bulky.
- Ultraviolet light: Fast, no filter to replace. Requires batteries and prefiltering for cloudy water.
- Squeeze: Compact and affordable. Water quantity limited by reservoir size.
- Chemical: Inexpensive, ultralight backup method. Long wait time, doesn't taste great.
Learn what options you have for water treatment while traveling. This article discusses the pros and cons of different treatment methods.
Read full article: What Is the Best Water Treatment for International Travel?
Cleaning your hydration reservoir can be an awkward task, but it’s not hard to do. We’ll give you a few tips to make it easier.
Learn how to keep your plastic water bottles and hydration reservoirs clean and odor-free. Includes tips on usage, washing and drying.