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5 Best Backpacking Water Filters for Safe Drinking on the Trail

November 11, 2024 8 min read

Backpacking is a beloved activity for many outdoor enthusiasts, offering the chance to explore nature's beauty while promoting physical fitness and mental well-being. One critical aspect of any backpacking trip is ensuring a safe and reliable water supply, which is where water filters come into play.

A group of backpackers filtering water from a mountain stream using compact, lightweight water filters. The filters are attached to their backpacks, and they are surrounded by lush greenery

Choosing the best backpacking water filter can make your adventure more enjoyable and safe by ensuring you have access to clean drinking water. With numerous options available on the market, it can be challenging to pick the right one for your specific needs. This article will guide you through the top choices, making it easier for you to decide which filter is best for your next adventure.

1) Sawyer Squeeze Water Filter

A Sawyer Squeeze Water Filter attached to a backpack, with a clear mountain stream in the background

The Sawyer Squeeze Water Filter is renowned for its efficiency and portability. Weighing just 3 ounces, it's extremely lightweight, making it easy to carry on any backpacking trip. With a filtration rate of up to 0.1 microns, it removes 99.99999% of bacteria, including salmonella, cholera, and E.coli.

Using this filter is straightforward and user-friendly. Simply fill the provided pouch with water, attach the filter, and squeeze the water through. You can also screw it onto standard disposable water bottles, making it versatile for different water sources.

The filter’s longevity is impressive. It can filter up to 100,000 gallons of water. This means you don’t need to worry about frequent replacements. Maintenance is simple too, with a backwashing syringe included to keep the flow rate optimal.

Durability is another key feature. The filter is built to withstand freezing temperatures, though it’s recommended to keep it from freezing conditions when wet. It's a dependable choice for various climates and terrains.

In terms of cost, the Sawyer Squeeze offers excellent value. It is reasonably priced considering the long lifespan and reliability it provides. Given its effectiveness, ease of use, and lightweight design, it’s a top choice for backpackers.

2) Katadyn BeFree Water Filtration System

The Katadyn BeFree Water Filtration System offers a lightweight and efficient solution for backpackers. Weighing just 2.3 ounces, it won't add unnecessary bulk to your pack. The system is compact and easy to store, making it a convenient choice for any trip.

You can rely on the BeFree filter to remove bacteria and protozoa from water sources. With a flow rate of up to 2 liters per minute, this filter allows for quick hydration. Its EZ-Clean Membrane can be easily maintained by simply shaking or swishing.

The BeFree has a 0.1-micron microfilter that ensures clean and safe drinking water. It's designed for use with the Hydrapak SoftFlask, which collapses for easy storage. This combination makes it practical and user-friendly.

The filter lasts up to 1,000 liters, providing long-term value. It's also compatible with standard plastic water bottles, adding to its versatility. The wide mouth opening allows for easy filling from various sources.

In terms of maintenance, there’s no need for backflushing or special tools. The filter's design minimizes clogging, which enhances its reliability in the field. Durability and ease of use make the Katadyn BeFree a popular choice among backpackers.

3) LifeStraw Personal Water Filter

A clear mountain stream flows through lush green foliage, with a LifeStraw Personal Water Filter attached to a backpack, ready for use

The LifeStraw Personal Water Filter stands out for its simplicity and effectiveness. This compact device allows you to drink directly from streams, lakes, or any water source, filtering out 99.9999% of waterborne bacteria and 99.9% of protozoa parasites.

Weighing only 2 ounces, it is easy to carry in your backpack or even your pocket. No batteries or moving parts mean it is reliable in all conditions.

It filters up to 1,000 gallons of contaminated water without iodine, chlorine, or other chemicals. This makes it a trusted choice for hikers, travelers, and emergency situations.

Its design ensures user-friendliness. Simply place one end in the water, and suck through the other end as you would with a straw.

Cleaning is straightforward. After use, blow through the straw to expel any remaining water and debris. This helps maintain flow rate and efficiency.

Because of its durable materials, you can expect it to last through many adventures. Regular maintenance will extend its lifespan even further.

Its affordability also adds to its appeal. Providing safe drinking water without a hefty price tag makes it accessible to many outdoor enthusiasts.

4) Platypus GravityWorks Water Filter System

The Platypus GravityWorks Water Filter System is known for its efficiency and ease of use. You don’t need to pump, just fill the reservoir and let gravity do the work. It can filter up to 1.75 liters of water per minute.

Its two-bag system keeps clean and dirty water separate, ensuring that the water you drink is free from contaminants. With a filtration capacity of up to 1,500 liters, it's built to last through numerous trips.

Weighing just 11.5 ounces, this system is lightweight and portable, making it ideal for backpacking. The setup and breakdown are straightforward, minimizing hassle during your adventures.

This filter system uses a hollow fiber filter which is effective against bacteria and protozoa but does not filter viruses. It's important to pair this system with additional measures in areas where viruses are a concern.

Cleaning the Platypus GravityWorks is simple and requires little effort. Backflushing it regularly will maintain its flow rate and efficiency, ensuring you have safe drinking water throughout your trip.

Quick-connect fittings allow for easy setup and compatibility with other Platypus products. This makes it versatile for different backpacking needs and preferences, enhancing its value as a reliable water filtration solution.

5) MSR MiniWorks EX Microfilter

The MSR MiniWorks EX Microfilter stands out for its reliability and ease of use. You can depend on it for a clean water source during long backpacking trips. The ceramic element removes bacteria and protozoa, ensuring safety from waterborne illnesses.

Pumping is straightforward, and the device connects easily to wide-mouth water bottles. You can pump about one liter per minute, making it practical for group camping. The replaceable carbon core also helps remove unpleasant tastes and odors.

The filter's maintenance is simple; you can scrub the ceramic element to restore its flow rate. With proper care, it can filter up to 2,000 liters of water. The durable construction ensures it withstands rugged outdoor conditions, providing long-term value.

The MSR MiniWorks EX Microfilter weighs around one pound, which is manageable for its durability and reliability. The setup is intuitive, so you can get purified water quickly without fuss.

Additionally, this filter is compatible with a variety of water sources, whether you're gathering from a stream, lake, or pond. This versatility makes it a favorite among serious backpackers. Its consistent performance and user-friendly design offer peace of mind on the trail.

Why Use a Backpacking Water Filter?

Using a backpacking water filter offers significant health benefits by providing safe drinking water and also helps reduce environmental impact by minimizing the need for single-use plastic bottles.

Health Benefits

When you backpack, having access to clean water is crucial for maintaining your health. Natural water sources often contain harmful contaminants such as bacteria, viruses, and protozoa, which can lead to serious illnesses. By using a reliable water filter, you remove these pathogens, ensuring you stay hydrated safely throughout your journey.

Additionally, water filters can eliminate various chemicals and heavy metals that may be present in stream, river, or lake water. This filtration provides you with fresher, better-tasting water. Staying well-hydrated with clean water can enhance your physical performance and mental clarity during your adventures.

Environmental Impact

Carrying a water filter significantly reduces your reliance on single-use plastic bottles. This reduction minimizes plastic waste, aiding in the preservation of natural environments you explore. Furthermore, you contribute to decreasing the pollution caused by plastic production and disposal.

Using a water filter also promotes sustainable travel practices. Instead of carrying large amounts of bottled water, which adds weight and generates waste, you can optimize your backpack space. Refilling your bottle using a filter can lessen your impact on supply chains and support efforts toward more eco-friendly backpacking practices.

Types of Backpacking Water Filters

Choosing the right backpacking water filter can significantly impact your outdoor experience. Key options include pump filters, gravity filters, squeeze filters, straw filters, and UV sterilizers, each with distinct advantages and best-use cases.

Pump Filters

Pump filters are popular for their efficiency and speed. They use a hand pump mechanism to force water through a filter, removing impurities quickly. These filters are ideal for situations where water sources are limited or not readily flowing.

Advantages:

  • Speed: Quickly filter large quantities of water.
  • Effectiveness: Can eliminate bacteria, protozoa, and sediment from water.

Considerations:

  • Effort: Requires physical effort to pump water.
  • Weight: Often heavier compared to other types of filters.

Gravity Filters

Gravity filters leverage gravity to pass water through a filter, requiring no pumping. After setting up, gravity does the work, making it a convenient hands-free option for groups.

Advantages:

  • Ease of Use: No pumping required, making it less labor-intensive.
  • Capacity: Typically filters large volumes of water, suitable for groups.

Considerations:

  • Setup Time: Requires time to set up and wait for water to filter.
  • Portability: Often bulkier, with longer hoses and larger reservoirs.

Squeeze Filters

Squeeze filters use a simple squeeze mechanism, where you squeeze a soft bottle or pouch to push water through a filter. They are lightweight and portable, perfect for solo backpackers.

Advantages:

  • Portability: Lightweight and compact.
  • Convenience: Quick setup and operation.

Considerations:

  • Capacity: Best for personal use or small quantities at a time.
  • Maintenance: Requires regular cleaning to maintain flow rate.

Straw Filters

Straw filters are small, portable, and allow you to drink directly from the water source. They are handy for emergency situations and ultralight backpacking.

Advantages:

  • Compactness: Extremely lightweight and portable.
  • Speed: Instant access to filtered water.

Considerations:

  • Usage: Not suitable for filtering large amounts of water for storage.
  • Durability: Limited lifespan; typically filters up to a certain number of gallons.

UV Sterilizers

UV sterilizers use ultraviolet light to kill bacteria, viruses, and protozoa in water. These devices are compact and quick, suitable for various water sources.

Advantages:

  • Effectiveness: Kills a wide range of pathogens.
  • Speed: Treats water in a few minutes.

Considerations:

  • Power: Requires batteries or charging, which may be a limitation on longer trips.
  • Cost: Generally more expensive than other types of filters.

How to Choose the Right Backpacking Water Filter

When selecting a backpacking water filter, focus on filtration speed, weight and size, filter lifespan, and ease of maintenance. These factors will influence your experience and the practicality of the filter in various environments.

Filtration Speed

Filtration speed is a crucial factor, especially if you're in a hurry or traveling in a group. A filter with a faster rate can save you time. Look for filters that can process several liters per minute.

Example:

  • High-speed filter: 2 liters per minute
  • Moderate-speed filter: 1 liter per minute

Make sure to check this rate when reading product descriptions or reviews.

Weight and Size

A lightweight and compact filter is essential for backpacking. Heavier filters can add unnecessary weight to your pack. Opt for filters that weigh less than a pound and can be easily stored.

Example:

  • Ultralight options: Less than 6 ounces
  • Compact size: Fits into a small pouch or bottle

Prioritize filters that offer portability without compromising functionality.

Filter Lifespan

The lifespan of a filter determines how long it can effectively purify water before needing replacement. Look for filters with high capacity, often ranging from hundreds to thousands of liters.

Example:

  • High-capacity filter: Up to 4,000 liters
  • Standard-capacity filter: Around 1,000 liters

Remember, higher capacity filters typically require fewer replacements on long trips.

Ease of Maintenance

Regular maintenance ensures the longevity and efficiency of your filter. Choose one that is easy to clean and doesn’t require frequent disassembly.

Example:

  • Easy-to-clean: Backflush system
  • Requires minimal tools: Simple brush or cleaning pad

A filter that’s easy to maintain will save you time and extend the filter’s life.