MSR Guardian Water Purifier Pump

9.8 score
[Editors rating (9.8)] = ( score (9.8)/10

desc top

desc bottom
Editor rating: 9.8 / 10
User's rating: based on 0 user ratings
1 star
2 star
3 star
4 star
5 star
Add your Rating
Editor’s Conclusion
The MSR Guardian water purifier pump has to be one of the best water filtration models because of its impressive design for purpose.

This pump can be used in any environment on the planet, from freezing waters right up through to sweltering dry torrid deserts. If a source of water exists, this is the system designed to get at that water and purify it.

One of the lacking features among hand pumps is the inability to filter out harmful bacteria and viruses. This pump can do this, and that makes it an obvious top choice.

For filtration speed, it also outperforms the majority of other options with an average of only 37 seconds to produce a liter of clean water. This is incredibly quick and keep in mind that this model is cleaning water in a broader, more efficient concept than standard water filtration systems.

The list of positives is impressive but are there any drawbacks? Take a close look at the capabilities and see why the MSR Guardian water purifier pump has earned a top position for being one of the best water filtration systems.
MSR Guardian Water Purifier Pump Review Facts
Editor's Pros & Cons

Will filter out harmful viruses, bacteria, protozoa, and particulate from contaminated water


Exceptional ease of use

Very quick filtration

0.02-micron setting

Hollow fiber filter system (medical grade)

Self-cleaning filter system

Produces high-quality water

Usable in any environment

Highly durable


Weighs more than basic water systems

Key Features

Comparison to Similar Water Filters

For a quick comparison let's take a look at a few other high-quality, good-performing water filtration systems.

The Katadyn BeFree outperforms the Guardian for treatment time by 15%. It is also lighter for weight and packability by 15%. It is a small efficient filtration system designed for lightweight carrying and lightweight use. However, it cannot outperform the MSR Guardian pump for removing bacteria and viruses, treatment time, minimal maintenance, durability and water quality.

Another comparable and good filtration system is the Sawyer Squeeze. The ease of water treatment time is slightly better and it is very light. This model can filter a liter in 40 seconds but it does not filter to a quality level equal to the MSR Guardian pump. Also, it cannot filter out viruses or bacteria.


For those that are willing to shoulder a little more weight in return for performance, MSR has a system that will meet your needs.

For overall performance, impressive features, ease of use and durability, the MSR Guardian water filtration pump outperforms other current models. In exchange for more weight, you get a product that filters out harmful bacteria and viruses and this has to be a big plus.

This model is an obvious choice for expedition groups and any adventurers choosing challenging environments. It is not only an investment in durable high performance, it is also a personal health, safeguarding choice.

The price is higher though the life span gives you a good investment return in the long term.