Platypus GravityWorks Group Camping Water Filter System
$ 134.95
Price: $134.95
(as of Mar 29, 2025 04:35:08 UTC – Details)
The Platypus GravityWorks 4.0 Liter High-Capacity Water Filtration System is ideal for basecamps, group and family camping, outdoor activities, and emergency preparedness. It does not require pumps, batteries, moving parts, or chemicals, ensuring access to clean water from contaminated sources, in situations ranging from adventure to survival. The replaceable hollow-fiber microfilter cartridge filters up to 1,500 gallons of water, and meets all EPA and NSF guidelines for removal of 99.9999% of bacteria and 99.9% of protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella, and Cholera. The water filtration system is easy to use almost anywhere. Simply scoop water from a lake, river, stream, or other contaminated water source into the 4.0-liter dirty water reservoir, and suspend above the 4.0-liter clean water reservoir. Water flows through the walls of the bundled fibers at rate of 1.75 liters/minute, leaving impurities behind, and filling the 4.0-liter clean water reservoir in just 2.5 minutes. It’s also easy to maintain in the field, backflushing in just four seconds to clean and restore performance. The Platypus GravityWorks 4.0 Liter High-Capacity Water Filtration System includes a 4-liter dirty water reservoir, 4-liter clean water reservoir, hollow-fiber microfilter, hoses, shutoff clamp, and storage sack. The complete kit is compact, packing down to the size of a one-liter water bottle, and weighs just 11.5 ounces. Made in the USA.
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
Customers say
Customers find the water purification unit easy to use and set up. It filters quickly with no manual effort. They appreciate the reliable way it filters a large amount of water. The filter is advanced but delicate, and it cannot be dropped or used if dropped. Overall, customers are satisfied with the product’s functionality and ease of use.
AI-generated from the text of customer reviews
J. Alderson –
This thing is AMAZING and QUICK!
This is AWESOME for groups. We do a family backpacking trip to a lake in Yosemite every year or two – and we can have more than 15 people there at a time. This means we have had to take turns pumping and sharing just 2 or 3 filters and it takes FOREVER. This sweet setup takes hardly any time… just scoop up some water and filter away. I think this would be helpful even with 2 people since it’s super quick and then you’d be able to fill your water bottles and have water for cooking. It’s also nice because you can store water in the clean water bag and refill as needed.LIMITATIONS: You definitely need something to hang them from (trees work great). You also need a source of water where you can scoop out a bucketful of non-nasty water. And be sure to read the directions about reversing flow just a little each time to un-jam it since particles build up more quickly than when you’re pumping.Super easy and user friendly. I just wish we had gotten one sooner!!!
L. Jones –
Best water filter on the market!!
I have had this filter for 7 years now and let me start by saying, itâs absolutely worth it. Backpacking is a lot of work and there is a lot of things to do, especially once you make camp. The only work this requires is to fill the bag and hang it on a tree. Water is filtering while you are completing other tasks, like setting up your sleep system. I bought this when I started taking my young children backpacking with me. I didnât want to be tied up pumping or squeezing water through a filter. This was the perfect solution. Works great for my guys trips and when I guide trips as well. Perfect for a group. The only con I have is the dirty bag can be especially difficult to get closed in colder temperatures, however, the system still works even if the bag is not closed all the way. Donât hesitate to purchase and enjoy the time you will get back by not having to pump or squeeze to filter water!
Mike –
BEST Water filter! Period.
Incredibly handy! Before buying this I did an exhaustive amount of research on water filters. What sold me on this is the fact that you can get a lot of water in one shot, it filters FAST, and most importantly… NO PUMPING! If you’re backpacking this is a no brainer. Water weighs 8.3lb per gallon and an adult needs about a gallon a day, so bringing water on a multi-day trip is not an option. This weighs less than a pound at 13.6oz! This can also save you money in the long run. The filter lasts for 1500 liters or 396 Gallons, If you’re buying gallons of water from the store that’ll cost you $350-$400. Even if you’re filling from the tap this will save space and save you from having to lug water around.The other “straw” filters are handy, but if you need to fill a Camelbak bladder or use water for cooking, then you’ll need a filter that is capable of filtering more water. The tubing and the storage bags are high quality and will not kink or deform. The hoses are long so you can hang the dirty bag from a branch and put the clean bag on the ground for maximum filtering speed, or you can just hang the clean bag from a lower branch. To dispense you can just detach the hose on the clean side of the filter and hang the clean bag as show in the picture.Want to get the most out of one trip to the water source? You can actually get 8 liters in one shot! Just fill the dirty bag and wait a short 3 minutes for it to filter. Then detach the clean water bag from the hose and screw on the provided screw cap to close the clean bag. Then will up the dirty bag and boom you’ve got 4 liters ready to go and another 4 that can be quickly filtered! That’s 2.1 Gallons in one trip!Cleaning:Every 8 liters or so (depending on water quality) when the dirty bag is nearly finished filtering, simply lift the clean bag higher and back-flush it for about 5 seconds and then clamp the hose and discard the water in the dirty bag. For long term cleaning add 2 liters of clean water to the dirty bag, add a couple drops of bleach, and filter it through. You can towel dry the dirty bag, but the clean bag you’ll need to just hang it for a few days in a dry place. The filter can be dried out by removing the bumpers and the plastic end pieces, and leaving it sit for a week.Cons:The filter is advanced but delicate, it cannot be dropped or used if the temperature may drop below 32F (0C) as it will damage the filter. You can easily test the integrity of the filter though by trying to blow air backwards through it. If there are bubbles on the other side, then the filter is broken, if not then you are good.I simply love this filter and couldn’t be happier with my purchase. I hope you found this review helpful!
Trina –
Excellent for your camping backpacking
I originally learned of the Platypus system from a friend whom I rode motorcycles with and camped of the bikes. This is the best filter system I’ve seen as it’s so easy to use and doesn’t plug up like the cheaper ones do. Just fill the bag with creek water and you’ll have clean, drinkable water in minutes. It’s VERY fast and efficient. It’s well made and all the hardware pieces are durable. This system kept us in clean water for a 3.5 week long trip through the Canadian Yukon/Northwest Territories. Just buy it. The cheap ones are worthless imitations of this great system.
Kipp Mroz –
This is so easy to use , and it drIns from the dirty water to clean water in about 5-6 minuets, easy to operate, great video by the co.pany on yohtube as qell, drains way faster thN the 4 l, the only thing a yone needs to do is buy this
Amazon Customer –
Highly Recommended. I have used this product in the wilds of Canada during a two week hike with three friends. It was truly amazing and an excellent product providing us with fresh after wherever we were. So good that I have purchased another for my trip to Africa.
Davide –
Ottimo filtro, veloce e rende limpida anche l’acqua giallastra
Judes –
Bei meinem ersten Thru-Hike hatte ich den âSqueezeâ-Filter eines bekannten, namhaften Herstellers – und er hat einen guten Job gemacht.Allerdings fand ich es schon hart anstrengend, täglich nach ~15 Meilen (Gebirgswanderung mit Zelt und Rucksack) das Lager zu errichten und dann noch mehrere Liter Wasser für abends und den nächsten Morgen – teils im Dunkeln und bei einstelligen Temperaturen – durch den Filter zu pressen. In der Zeit hätte ich lieber schon geschlafen oder einen Gute-Nacht-Tee getrunken ;)Da ist dieser Filter eine wahre Evolution – und meines Erachtens jeden Euro und jedes Gramm mehr wert! Man füllt ihn, hängt ihn (bspw. an einem Baum) auf – und während man sich anderen Sachen (z. B. dem Zeltaufbau oder der Körperpflege) widmet, erledigt die Schwerkraft alles andere. Funktioniert auch nach Jahren noch einwandfrei.Verpackung und Versand waren auch nicht zu beanstanden.Insgesamt klare Kaufempfehlung – auch für Minimalisten! 🙂
J C –
Item arrived with parts missing. returned