The LifeStraw ($19.95 on Amazon.com) filters out 99.9 percent of waterborne protozoan parasites, and 99.9999 percent of waterborne bacteria, including E. coli, Giardia, salmonella, and more, which exceeds the EPA standards for water filtration. It filters up to 1,000 liters (~264 gallons), and has a shelf life of 5 years, which means you’ll have virtually unlimited access to safe, clean drinking water for the life of this product.
