MSR Guardian Purifier System

The MSR Guardian Purifier System is heavy and expensive, but with good reason. The pump gets rid of bacteria and viruses within the water, cleans itself with the 10% back-flush mechanism, filters quickly and efficiently, and is extremely durable, withstanding freezing temperatures and being dropped or crushed. The numerous features and technical specifications that comprise this system make it worth the price and weight, especially considering this product has the longest lifespan of any virus-removing filter system.

Platypus GravityWorks 4.0L Filter System

The Platypus GravityWorks 4.0L Filter System is a high-quality, intuitive, and very well designed water filtration system for multiple people. Until someone invents an odorless and safe magic pill to purify water, the Platypus GravityWorks 4.0L is likely the best option on the market for cleaning water for groups and families.