best backpacking water filter

Best Backpacking Water Filters and Purifiers of 2021

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Backpacking is exciting and a favorite activity for many people. However, without the right backpacking gear, the whole trip would turn out to be stressful and even depressing rather than fun. A common worry for most backpackers is how they will filter or purify their water while out in the wilderness. I bet you worry about that too! Don't you?

In fact, this is one of the key considerations that will either make your trip memorable or otherwise. Choosing the best backpacking water filter is both tasking and confusing. With so many models and brands in the market to choose from, considerations to make can never be just a few.

Do you prefer a purifier that will get rid of bacteria, viruses and other pathogenic organisms in your drinking water to make it safe? Do you need a UV purifier or something different? What are some of the best gravity induced water filters and pump filters in the market? What capacity of safe drinking water will you need during your backpacking trip? How fast will you need the water?

Due to the constant change in technology, these questions can be difficult to answer for new and seasoned adventurers alike. Well, we make your work easier by providing an impartial and factual review of the best backpacking water filters and purifiers in the market. After repeated testing of more than 50 top purifiers and water filters, we came up with these 10 which are undoubtedly the top picks.

Which is the best backpacking water filter?

Let's dive into the details of each of the top-rated water filters:

1. Katadyn Pocket Water Filter: The Best Pick for Groups of Campers or Backpackers


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Honestly, purchasing the best backpacking water filter is not a cheap venture. The Katadyn Pocket Water Filter does not come cheaply either and is certainly not your ordinary water filter. While it boasts of being one of the most reliable and effective micro-filters available, it is suitable for the harshest environments across the globe.

This micro-filter is therefore ideal and popular among various classes of people. The Katadyn product is an executive means to obtaining clean and safe drinking water in the wilderness irrespective of the available sources.

Briefly, this micro-filter has the following salient features:


No water filter beats the Katadyn Pocket Water Filter in durability. It features an impressively high quality construction for consistent use. To start with, the solid make and the sturdy design make this micro-filter your lifetime traveling companion. More importantly, the product delivers a complete water treatment that includes elimination of common water protozoa and bacteria. Being a ceramic filter, this travel gear does not require a lot of maintenance even with continuous use.

Portable water filter

Just as the name suggests, the Katadyn Pocket Water Filter is compact, lightweight and will easily fit into your pocket with unimaginable ease. This makes this purification equipment an ideal micro-filter for backpacking enthusiasts in very remote areas, relief workers in disaster prone areas, military officers on duty as well as foreign travelers.

  • Easy to pump using the round pump handle.
  • Easy to clean.
  • High water output hence fast.
  • Effective and reliable.
  • Versatile and can effectively be used as a life-straw.
  • Costs a little bit higher than an ordinary water filter.

Bottom Line

The Katadyn Pocket Water Filter is durable and highly portable. Credited with a capacity of up to 50,000 liters of water and an unbeatable flow rate of about 1 liter per minute, the filter is ideal for small groups of campers, backpackers or hikers. Investing in this water filter gives a good return on investment for every penny you put in.

2. MSR Guardian Purifier Pump: The Ultimate International Traveler’s Pick


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While all the water filters reviewed here are great and you will find them very effective and efficient as per their specifications, none of them comes closer to the MSR Guardian Purifier Pump. It is effective, efficient and very durable. In addition, this water filter withstands all weather conditions including very hot and freezing temperatures, making it a gem for the varied seasons throughout the year. Do you therefore need to worry about your clean water needs while overseas? Read further and decide for yourself!

Fast, Reliable and Easy to Use

The MSR Guardian Purifier Pump has a remarkable pumping capacity. It pumps a rapid 2.5 liters of water every minute without using batteries, chemicals or bulbs. This feature not only reduces the cost of use and maintenance of this purifier but also reduces the waiting time particularly when the users are a group of camping or backpacking enthusiasts who will need large quantities of water.

The fact that this backpacking water filter has the ability to filter out all pathogens including viruses makes it ideal for international travel where water may contain viruses and other tiny bugs.


MSR employs a new technology to ensure that the durability of this equipment is not put in doubt. It can withstand heavy and consistent use, harsh environments and falls or drops of up to 6 feet. Incredible, right? But that is not all. This purifier can filter and treat up to 10,000 liters of water without any replacement.

  • Easy to use and maintain.
  • Durable and reliable.
  • Incredibly effective and efficient.
  • Self-cleaning technology saves you the hassle of back-flushing like with most purifiers.
  • Apart from the slightly higher price, the MSR Guardian pump has no notable downsides.

Bottom Line

The MSR Guardian Purifier Pump is your ultimate international companion. It is durable and will be your lifetime companion with amazing output. The fact that this equipment is self-cleaning gives you an easy time and safe water throughout your use. Although most pump filters are tiring, the technology used in this new MSR product makes it efficient and easy to operate. This is a pump you will find very interesting. Reward yourself with this equipment and get the value for your money and more. Give it to a friend as a gift and you will stay in their life for as long as they live.

3. Platypus GravityWorks 4.0L Filter System: Best Gravity Filter


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The Platypus GravityWorks takes our award of being selected as the editors' top choice. Do you want your water purified and made clean and safe with as minimum effort as possible? The Platypus GravityWorks Filter System efficiently and effectively removes all bacteria, protozoa and other pathogens from your water making it 99.99999% safe.

The following incredible features make it the best hence the top choice in the market!

Fast and easy to use

This is one of the easiest water filters to use out there. The system comes with two water bags. Simply fill the bag marked "Dirty" with the water you intend to filter, hang it and relax. Clean water will move to the clean water bag. You do not need to pump as gravity will do all the work for you. Amazing, right?

Again, imagine you have just got to your campsite in a remote countryside and you need water to quench your thirst and do some cooking! The GravityWorks Filter System has the speed to give you 4 liters of clean water in less than 10 minutes. Admittedly, this is sufficiently fast.

Bigger storage capacity

One of the greatest advantages of the Platypus GravityWorks 4.0L Filter System is its ability to filter smaller and larger quantities of water in no time. More interestingly, the clean water bag acts as a storage unit. This gives you an opportunity to access clean water whenever you need it.

  • Fast treatment time.
  • Easy to use.
  • Lightweight.
  • Relatively compact.
  • Ability to treat and store about 8 liters of water.
  • Quite costly.
  • The lid needs a bit of care to close.

Bottom Line

The Platypus GravityWorks Filter System is an incredible gear for hikers, backpackers and campers. It is fast and easy to use. The gear is also lightweight and fairly compact making it easy to carry along. Moreover, the GravityWorks system saves you the hassle of making several trips to a water source as there is ample storage. Despite its slightly higher cost, this is an incredible outdoor gear that we can confidently forge for.

4. Survivor Filter PRO 0.01 Micron Water Purifier Pump: Top Survival Choice


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If you are looking for a water purifier that will effortlessly provide clean water for your entire family when on a survival excursion, the Survivor Filter PRO 0.01 Micron Water Purifier Pump is your dream choice. To say that this military-quality water filter has made a remarkable mark in the outdoors water filtration industry is an understatement. This system's technology has set the bar for other survival water filters.

Triple filtration process

Apart from the unrivalled 0.01 micron filter, the filtration takes place in three stages. The process begins with a sediment pre-filter, then an activated carbon filter and finally a membrane ultra-filter. This process ensures that all particulates such as silt and contaminants like chlorine and heavy unhealthy metals are eliminated. The ultra-filter also ensures that the tiniest viruses are gotten rid of making your water 99.9999% safe for drinking. Much as this sounds fictitious, you got to believe it because that is what it does.

Versatile with reliable flow rate

The Survivor Filter PRO 0.01 Micron Water Purifier Pump has a commendable flow rate. In less than a minute, you are assured of at least 500 milliliters of clean water without breaking any sweat. The pump can be used in three ways. Firstly, you can use the pump directly from a fresh water point. You can also use the pump to fill water into a portable container or in to the included cup. Finally, you can use the pump to effectively filter larger quantities of water for many campers or the entire family.

  • Fully compact and portable.
  • 100% money back guarantee.
  • Versatile and easy to use.
  • Good price for the quality.
  • Needs regular cleaning to get off the clogs.

Bottom Line

The Survivor Filter PRO 0.01 Micron Water Purifier Pump is a must have product for anyone who is interested in maintaining a safe supply of water during their outdoor expeditions. It is affordable, versatile and guarantees a consistent and reliable flow rate during use. The triple filtration process ensures that you obtain a clean and safe water devoid of any hazardous elements. This purifier promises a lot but delivers much more.

5. Katadyn Hiker Pro Microfilter: The Super Hiker's Pick


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The old model Katadyn Hiker Pro Microfilter is your most solid choice for general backpacking, hiking and camping expeditions. The Microfilter has for a long time claimed its spot as one of the bestsellers in its category. For more than half a decade now, this system is popular among hiking enthusiasts.

Considering the following issues, this is rightly so:

Compact and lightweight

Despite being a traditional water purifier, the Katadan Hiker Pro is small, compact and lightweight. These factors make it packable into a small piece for portability when hiking. It is also possible to hold it in one hand and use the other hand to effectively pump it during use.

Additional accessories

The Katadyn Hiker Pro Microfilter comes with additional accessories to ensure that your recreational activities are more interesting and lovely. For example, a pre-filter accessory, carrying case, water inlet and a cleaning as well as a maintenance booklet are all part of the package. These items not only make the the Katadyn Microfilter easy to carry but improves its efficiency during use.

  • Easy to use.
  • Good value for the money.
  • Very portable and hence perfect for backpacking.
  • Affordable.
  • Needs a lot of energy to pump until you get used to it.

Bottom Line

The Katadyn Hiker Pro Microfilter is a top choice for any typical hiker. It is lightweight, compact and comes in a stylish carrying case. In addition, it also has bottle and bladder adaptors giving you the bonus options of being able to carry along some water. This micro-filter is an incredible option for super hikers who would like to keep it light during their excursions.

6. MSR MiniWorks EX Microfilter: Quality for the Money Award


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The MSR MiniWorks EX Microfilter is a decent hand operated water purification equipment designed and produced by Mount Safety Research. This fairly priced product gives you the best quality for the money. After our tests and research, we conclusively found out that the product adequately blends good quality, reliable performance and unbeatable price.

Here are some of its amazing features:

Ceramic filter for common water bugs

Equipped with a ceramic micro-filter that filters out everything bigger than 0.2 microns, the MSR MiniWorks EX Microfilter has the capability to reliably filter out bacteria, particles, protozoa, algae, fungi as well as other common bugs. Rest assured that your water is safe for consumption irrespective of its source.This feature makes this MSR product ideal for use in a wide range of environments. In addition, this ceramic filter adds a favorable taste to the water water.

Hygienic and easy to use

The MSR MiniWorks Ex consists of a basic package and assembly that makes it easy to use, to clean and to maintain. It is fast and will take you less than a minute to filter about 1 liter of water. Keeping the outlet sanitary is easy using the cap that comes with this product. Moreover, to avoid the intake of sediment from streams and water points, the hose is kept buoyant by the float.

  • It is easy to clean, use and maintain.
  • Durable and has a longer lifespan than most filters.
  • Great design to curb cross contamination.
  • Adds a nice taste to your water.
  • Favorably priced.
  • Should be kept warmer in freezing conditions.
  • Suited for use with bigger bottles.

Bottom Line

The MSR MiniWorks Ex Microfilter is a simple but effective water purifier for one or two hikers. It is easy to use and highly hygienic. While this water filter is not ideal for very cold and freezing weather, it still is a reliable outdoor equipment that will guarantee you clean water whenever you need it. It is highly recommended for people who need more than the basic water filters and purifiers.

7. Sawyer Products Mini Water Filtration System: Best Bang Per Buck


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The Sawyer Mini Water filter is as affordable as water filters can get. Sawyer Products Limited has revolutionized the water purification industry. Therefore, even with the smallest of budgets, you no longer have to make your backpacking trips without an effective water filter.

Key features that make the Sawyer Mini Water Filter worth a consideration include:

Best performance compared to cost

Without compromising performance and reliability, the Sawyer Mini Water Filter costs a fraction of what your ordinary water filter would cost. At about 20 bucks, it is one of the most affordable water filters available.

Interestingly, this water filter will last to filter up to 100,000 gallons before it is due for replacement. It will therefore protect you from drinking contaminated water while hiking in the upcountry.

Versatile and easy to use

The Sawyer Mini can be used both as a straw and as a water filter. This makes it ideal to use when you need to purify water into a container and when you want to drink directly from the water source. That is not all about its versatility as the water filter can also be used both to drink from a small-mouthed water bottle and an inline attachment to a hydration bladder.

  • Small, light and highly portable.
  • Easy drinking through the straw.
  • Less expensive.
  • Versatile and adaptable to various uses.
  • Not ideal for treating larger quantities of water in one go.
  • Needs frequent back-flushing to get rid of the clogs.

Bottom Line

The Sawyer Mini Water Filter is an ideal product for people working on a tight budget. It is easy to use, small in size, lightweight, affordable and highly versatile. In our opinion, we recommend this product to all hikers and backpackers who are generally skeptical about water filters and purifiers and would like to test the waters before committing.

8. LifeStraw Personal Water Filter: The Top Emergency Pick


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For all the good reasons, the LifeStraw Personal Water Filter has been making rounds in several blogs and among camping, hiking and backpacking enthusiasts. This lightweight and portable water filter is an astounding equipment that works absolutely just like the robust water filters that cost almost five times its price. It gives you a chance to access clean drinkable water in any part of the globe.

Features that puts the LifeStraw equipment up with other purifiers include:

Tested over time

The LifeStraw Personal Water Filter has been in the market for over one decade. During this time frame, this water filter has undergone improvements and sits at the top of the list when tested alongside industry leaders. It has been used by millions around the globe and continues to be a best seller. This is credited to its immense portability, affordability as well as the fact that it is reliable.

The LifeStraw can filter more than 99.99% of protozoa and bacteria giving you safe drinkable water. It can also filter out bigger particles such as algae, fungi and other water bugs.

Easy to store and ideal for emergencies

Accessing clean water when you travel to the countryside or to a foreign country is not an easy task. However, it is worth noting that this outdoor equipment solves your worries when you are away from home and can't trust the water available. It comes in a sealed bag to provide convenient storage and comes in handy during emergencies.

  • Lightweight and portable.
  • Affordable.
  • Easy to store.
  • You may need a cup or container to drink from rather than lying on your belly at the water source every time you need to sip water.

Bottom Line

The LifeStraw Personal Water Filter is certainly your best solution to emergency drinking water needs. It is lightweight and you can easily hang it around your neck and carry along. This outdoor gear comes in handy when you need to drink water urgently. It is a recommended choice for trail runners, bikers and hikers.

9. LifeStraw Mission Water Purification System: Best Pick for International Group of Travelers


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Are you planning to travel with your friends and family to a backpacking expedition far away from the United States and worried about the type of water you may have to survive on? Well, the LifeStraw Mission Water Purification System is your gateway to clean and safe drinking water anywhere in the world. Even if you are one of those individuals who do not trust water filters and purifiers then you will have to take this one more seriously.

Fast and Easy to Use

Just like most gravity-fed filters, the LifeStraw Mission Water Purification System is designed to filter and purify large amounts of water from any sources. The modular system consists of a large water bag for untreated water, a pre-filter, a hose and a water purifier. Simply fill the bag with untreated water and hang using the hanging handle so that gravity can do the rest of the work. Control the tap under the filter as appropriate.

Very Effective

This is one of the few systems that will both filter your water and purify it. More importantly, out of the filters reviewed here, this is one of the few systems that will filter out up to 99.9999% of viruses in addition to protozoa, bacteria and algae. This is the main reason why it is recommended for campers traveling outside the United States and Canada.

  • No pumping hence easy to use.
  • Easy to control through the tap.
  • Easy to pack and carry along.
  • Needs to be kept warmer in freezing conditions.
  • Costs slightly more than your ordinary filter.

Bottom Line

While most water sources in the United States do not have viruses, this cannot be said about most water sources in developing countries. The LifeStraw Mission Water Purification System is therefore an essential gear for people planning to travel away from the US and Canada. It eliminates metallic elements, algae, fungi, protozoa, bacteria and more interestingly, viruses.

10. GRAYL Ultralight Water Purifier: Top Ultralight Pick for Trail Runners


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Trail runners and bikers are not left behind. The GRAYL Ultralight Water Purifier is a lightweight, portable purifier that suits trail runners, hikers and bikers who will need to keep hydrated throughout their expeditions. Nothing is as stressful as being in the countryside without a means to safe drinking water. The GRAYL Ultralight Water Purifier is a sure bet as it is highly effective and reliable.

Filters micro-organisms, chemicals and heavy metals

The GRAYL Ultralight Water Purifier is a unique equipment in the ultralight category of purifiers. Unlike most purifiers, this equipment has the ability to filter out at least 99.999% of bacteria, 99.999% of protozoans as well as 99.9999% of harmful viruses. The purifier can also filter hazardous chemicals such as chlorine and benzene as well as heavy metallic elements including lead, zinc and arsenic. To make your experience more enjoyable, the system improves water clarity, adds a memorable flavor and eliminates bad odor.


The ONE PRESS technology cleans and purifies water in just 15 seconds. To use this purifier, all you need to do is to fill, press to clean and purify and you have your clean and safe drinking water. This technology therefore gives you access to safe water without sucking, pumping, squeezing or waiting. Finally, it is important to note that all the efficiency is achievable without the use of power butteries or ultraviolet bulbs. This makes this equipment easy and cheap to maintain.

  • Comes with a filter bottle.
  • Easy to use and maintain.
  • Small and lightweight.
  • Favorably priced.
  • Durable.
  • May clog after a period of use.

Bottom Line

The GRAYL Ultralight Water Purifier is efficient, easy to use and very fast. Despite the fact that we ranked it the best pick for hikers and trail runners, this gear is versatile and fits a wide range of users. This is a fantastic equipment for all outdoor enthusiasts. Backpacking, hiking, camping, biking and survival enthusiasts will find it useful anywhere around the world as it has the ability to sanitize any water. It is a highly recommended item for globetrotters who do not want to carry along more bulky and heavier water filters.

How to Choose the Best Backpacking Water Filter

Since all the above filters and purifiers we tested and reviewed top the list in the market today, you may still not have an idea of what you need. In all fairness, this is because you probably do not know the specifications you may need. The choice of a water purifier or filter depends on several factors. Some of them include;

Water Filtration FAQs

Q. Which water sources can be trusted for clean water?

You have probably heard some self-proclaimed "experts" claiming that water from high altitude sources is safe and does not need filtration or purification.

While it is true that water contamination varies from source to source and even from one point to another of the same source, no one should claim absolutely that a certain source is free of contamination. As a general principle, any water taken from a wild source should be purified before drinking.

Q. How do I minimize the risk of getting water from a highly contaminated source?

As a general rule, water from stagnat sources tend to harbor a plethora of bacteria and other pathogens. As such, we recommend water from moving streams such as rivers and glaciers.

If your only accessible source is a stagnant source such as a lake, we recommend a few steps that will lower the risk of high contamination.

First, a quick assessment of the source to make sure there is no any animal carcass that could be contaminating it is a crucial step.

Secondly, avoid water sources with lots of debri and dirt.

Third, avoid water sources near campsites or near habitats of both humans and animals.

Overall, get water from sun-exposed parts such as near the surface of the lake as opposed to dark nooks. It is well-established that sunlight is a natural disinfectant that will greatly lower the pathogens in the exposed water. Even then, whichever source you get your water from, make sure that you always purify it before drinking.

Q. Can I rely on other purification methods apart from a backpacking filter?

There are varied other ways of making sure that your water is clean and safe. A preference for a backpacking water filter is usually due to their high reliability and convenience for use in the wild. However, if you are not into water filters for any reason you may consider one of the following methods of disinfecting water from the wild:

Final Verdict

While it's not an easy task searching for and settling for a backpacking water filter, the process shouldn't be entirely impossible. We have done our best to offer you a reliable list of the best water purifiers and filters that will see your camping and outdoor excursions being nothing but memorable. And whether it is a simple filter or a water purifier suitable for a group of backpackers, we've got your interests covered.



When he's not camping or adventuring the outdoors, you'll find him grinding hard on his keyboard to put up some super-awesome content on Starting off on camping escapades back in 2011, he has grown fond of the activity over the years. His exposure to a myriad of different camping terrains, gear and the outdoor atmosphere has hitherto changed his perception of the entire outdoor life. He enjoys sharing the experiences of his adventures and gear reviews with the awesome camping community on this platform. Read more about us.


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