Platypus GravityWorks High-Capacity Water Filter System for Group Camping and Emergency Preparedness


  • High-capacity, gravity-fed, hollow-fiber water filter system is ideal for group and family camping, outdoor adventures, and emergency preparedness
  • Meets all EPA/NSF guidelines for removal of 99.9999% of bacteria and 99.9% of protozoa, including giardia, cryptosporidium, E. coli, salmonella, cholera
  • No pumping required; reservoir fills easily and hangs from a tree to deliver four liters of filtered water for cooking and washing in 2.5 minutes
  • Includes 4-liter dirty water reservoir, 4-liter clean water reservoir, hollow-fiber microfilter, hoses, shutoff clamp, and storage sack
  • Replaceable cartridge filters up to 1,500 gallons; produces flow rate of 1.75 liters/minute; kit weights 11.5 ounces; made in the USA


From the manufacturer

Hollow Fiber Technology

GravityWorks filters are made of hundreds of hollow fibers bundled into a single filter. Water flows through the walls of these fibers, leaving impurities behind. The resulting filter provides up to 18 times more surface area than traditional filter media.

Platypus Gravity Works

Platypus GravityWorks water filters make it effortless to get clean water practically anywhere. You simply fill the reservoir and let gravity filter the water for you. GravityWorks filters provide clean water faster than most pump systems, and they make it easier to store, transport and dispense all the water you need. All GravityWorks filters meet EPA and NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E.coli, Salmonella and Cholera.

  • Collect water anywhere
  • Gravity does all the work
  • Produces 1.75L of clean water per minute
  • Antimicrobial, taste- and BPA-free

Other Great Accessories For The Gravity Works:

GravityWorks Carbon Element

Maximize the Platypus taste-free experience with the new GravityWorks Carbon Element. It easily splices in after the GravityWorks hollow fiber element with an included hose segment, helping to remove flavors, odors, and many organic compounds from filtered water for the best taste possible. (sold separately).

GravityWorks Filter Cartridge

Effective down to .2 microns and meets EPA Guide Standards for the removal of bacteria and protozoa. Approximate filter life of 1500L depending on quality of water filtered. (sold separately).

Universal Bottle Adapter

The Universal Bottle Adapter allows any GravityWorks water filtration system to filter directly into a wide range of hard bottles and hydration systems, eliminating the weight of a dedicated Clean Reservoir. Its multi-component design lets you take just the parts you need for your vessel of choice to further lighten your load. (sold separately).

Replacement Hose Kits

Kits for both the 4.0L and 2.0L GravityWorks systems contain Clean and Dirty hoses, as well as a replacement Quick-Connect fitting and shutoff clamp. (sold separately).

We Believe In Clean Water

Our mission is to create the finest reservoirs, bottles, and water filters on the planet so you’re never without clean water. That’s why we put thousands of hours of laboratory testing and field use behind every piece of gear we sell. The result is clean and taste-free hydration you can count on day after day, anywhere in the world.

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Best Sellers Rank

#3,626 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #7 in Camping & Hiking Water Filters

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