Fast Backcountry Filtration

2 Liter Gravity Filtration System

A time tested favorite, Sawyer’s 0.1 Micron Gravity Filtering System simplifies backcountry hydration needs. This versatile, safe, and highly effective bag system is practically hands free. Just hang the system from a tree or any source off the ground, and gravity does all the work quickly — filtering 2 liters of water in as little as 90 seconds.

Packing Sawyer’s Point ONE filter mechanism (rated to 0.1 micron absolute filtration), the Gravity Filtering System removes 99.99999% of all bacteria, such as salmonella, cholera and E.coli, and removes 99.9999% of all protozoa (such as giardia and cryptosporidium).

It comes in two sizes (2- and 4-liter) and in two configurations — either a single bag (for filtering into your own container) or a dual-bag package (one for dirty water, one for clean water).

2 Liter Gravity Filtration System

How It Works

Gravity Does the Work

Take the gray reservoir and fill it up with water from any source — lake, stream, faucet, etc. After filling, hang the gray bag from a tree, the back of your pack, or simply hold it up with your hand. The color-coded system (grey goes with grey, blue goes with blue) makes filtering easy. Just connect the tube into the gray reservoir and clip the other tube end into the grey end of the Point ONE filter.

Start filtering water into either the blue reservoir (included in two-bag system) or directly into another container, and you’ll have 2 liters of fresh, clean water in about 90 seconds — ready to drink, cook with, or fill water bottles.

With the two-bag system, you can even use the blue reservoir as a hydration pack with the included drinking tube and a bite valve (sold separately).

Product Features

0.1 Micron Absolute Filtration

Our water filters contain a high number of tiny ‘U’ shaped hollow fiber micro-tubes that trap contaminants while allowing decontaminated water to freely pass through at a high flow rate — eliminating the need to store water and reducing the possibility of water contamination after the filtration process.

The Sawyer Point ONE (the filtering mechanism for the Gravity Filtering System) is certified for 0.1 micron filtration, meaning there is no pore size larger than 0.1 micron in size. This makes it impossible for harmful bacteria (like salmonella), protozoa, or cysts like E. coli, Giardia, Vibrio cholerae, and Salmonella typhi to pass through the filter.

All Sawyer water filters meet or exceed Environmental Protection Agency (EPA) recommended removal rates.

A Lifetime of Clean Water

The Point ONE’s filtering membranes are sturdy enough to withstand backwashing using the included syringe, restoring up to 98.5% of the filter’s flow rate.

The Point ONE can be cleaned and reused almost indefinitely with no expensive cartridges to replace… ever. We recommend backwashing and sanitizing the filter after every outing for optimized use.

Fully field maintainable, the Gravity Filtering System includes a faucet adapter for a more thorough backwash when you get back home.

Available at:

View All
  • Amazon
  • Bass Pro Shops
  • Cabela’s
  • Dick’s
  • Field and Stream
  • REI Co-Op
  • Target
  • Walmart

The Details

Kit Includes

SP161 – 2 Liter Single Bag System Includes:

  • 2 Liter Gray Reservoir
  • Sawyer PointONE Hollow Fiber Membrane Filter
  • Faucet Adapter
  • Drink Tube
  • Quick-Release Hose Adapter
  • Instructions for Use

SP162 – 2 Liter Dual Bag Complete System Includes:

  • 2 Liter Gray Reservoir
  • 2 Liter Blue Reservoir
  • Sawyer PointONE Hollow Fiber Membrane Filter
  • Faucet Adapter
  • Drink Tube
  • Quick-Release Hose Adapter
  • Instructions for Use


Longevity:Lifetime Warranty
Volume:2 Liter
Filter Material:0.1 Micron Absolute Hollow Fiber Membrane
Removes:Bacteria, Protozoa, and Cysts
In Packaging Dimensions:
Weight:1.25 lbs

Filter Material: Hollow Fiber
Removes: Bacteria, protozoa, E. Coli, giardia, vibrio cholerea, Salmonella typhi
Filter Life: Lifetime Warranty
Compatibility: Complete system, inline
Complete Weight: 16 oz
Packable Weight: 12 oz
Recommended Use: Hiking, backpacking, ultralight backpacking, camping, paddling, group camping, emergency preparedness
Product #: [SP162]



Product #:SP162
UPC: 050716001624


  • Q: ViewHow often should I backwash my filter?

    We recommend backwashing your filter when you flow rate begins to diminish, before prolonged storage, and when you are ready to start using your filter again.  Backwashing your filter after storage is a great way to re-wet the filters and restore the flow rate before use.

  • Q: ViewDoes the Sawyer filter remove taste, chemicals and heavy metals from water?


    The Sawyer filter removes taste that comes from bacteria, dirt, and green matter.


    The Sawyer filter does NOT remove iron, sulfur, other chemicals, or simple compounds. Taste can be masked by using flavor additives like Gatorade or crystal light (filter needs to be cleaned immediately after using them).

    Heavy Metals

    The Sawyer filters are not made with charcoal. While other portable filters have charcoal, they lack in amount of media and adequate dwell time. Therefore, they only remove small amounts of heavy metals, pesticides, etc. (when used in real life applications). Try using better sources of water, if possible.

  • Q: ViewDo you have more information about Sawyer’s Label Claims and Warranties?

    We have independent lab tests using EPA protocols and information about our filters and their warranties available on our Downloads Page.

  • Q: ViewFilter Compatibility

    The Sawyer Squeeze Filter

    The Sawyer Squeeze Filter can be used in conjunction with a hydration pack. Please see video Sawyer Squeeze with Hydration Pack using Inline Adapter and Sawyer Squeeze with Fast Fill Adapters.

    The Sawyer Squeeze Filter with Water Bottles

    The Sawyer Squeeze Filter can also be used on water bottles when you are unsure whether or not it is safe to drink the water.

    The Sawyer Inline Filter

    This convenient filter can be used as an inline filter on a hydration pack, a pre-filter for an existing pump system, with the provided faucet adapter, or with a gravity bag.

  • Q: ViewHow fast should the water come out of my filter?

    Flow rates

    Flow rates vary depending on how clean the filter is and how well you cleaned the filter. Altitude also affects the flow rates (the higher you go the slower the flow. Also, the PointZEROTWO™ filter flows much slower that the Point ONE.

  • Q: ViewHow do I care for my filter during freezing weather?

    Before initial wetting

    Filter is safe from freezing temperatures if it has never been wetted.

    After initial wetting

    While there is no definitive way to tell if a filter has been damaged due to freezing, Sawyer recommends replacing your filter if you suspect that it has been frozen.

    During trips

    If you are in freezing temperatures, we recommend that you store your filter in your pocket or close to your person so that your body heat can prevent freezing. THERE IS NO WARRANTY FOR A FROZEN FILTER.

It's More Than Just Water

Join us on our mission to bring clean water around the world. Click below to learn more or text SAWYER to 41444.

Visit Sawyer International

Have a Question?