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Platypus GravityWorks 40 Liter Water Filter Review .pdf

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Title: Platypus GravityWorks 4.0 Liter Water Filter Review

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Platypus GravityWorks 4.0 Liter Water Filter Review
Ready Lifestyle Contributing Author

May 2, 2018

The Platypus Gravityworks Water Filter is a
convenient, high capacity water filtration
system that takes the effort out of securing
potable water. Simple to use and easy to
maintain, this system is capable of providing
clean water for you, your family, pets,
neighbors, and anyone else that happens by!

Platypus GravityWorks 4.0 Liter High-Capacity Water Filter

Ease of Use
9.5 /10

8.5 /10

7.0 /10

8.5 /10

Easy to use.
Filters water while you do other things.

Very easy to clean.
The best filter option for large groups of people.

More expensive than other types of filters.
Filling the bag in areas with little water is difficult.
The filter element is fragile.
Check the Price on Amazon

Who Should be Interested in the Platypus GravityWorks Water Filtration
For just one person, I would choose a smaller option but for a group this filter is king. If you are
a scout leader or frequently hunt in off-grid locations with a group of buddies, a filter like this
really takes the effort out of providing water for everyone. Around the home, this filter could
provide enough clean water for drinking, cooking, and any other task for a whole family with
just minutes of work a day.

The .2-micron pore size of this filter is pretty much standard and meets with CDC and World
Health regulations on removing bacteria and protozoa. Like most filters on the market, this
does little to help with viruses or chemicals in water. As long as you choose your source

wisely, this filter should do everything you need on the North American continent.
Boasting a 1500 liter treatment capacity, the GravityWorks has a solid lifespan and with a flow
rate of around half a gallon a minute and a bit over a gallon at a time using the included
reservoir, this filter is sure to keep you in water with little effort.
A well-designed plumbing system really takes a lot of the thought out of getting the filter set up.
The reservoir has an automatic valve that only allows water to flow when the system is
connected so no need to drag everything along when going to fill up. A hose clamp on the
outgoing line allows some flexibility in how water is dispensed.
Field maintenance and cleaning of any piece of gear should be a foremost consideration. The
Platypus GravityWorks make this a breeze with probably the easiest cleaning solution of any
filter type and can be done in seconds. Even checking to make sure the filter is in proper
working order is foolproof, quick, and reliable!


The point where Platypus Gravityworks Water Filter really shines is in its ease of use and
hands-free filtration. The dirty water reservoir has a Ziploc type closure, making filling it a snap
as long as your water supply is large enough to get the bag mostly submerged. Simply hang it
in a tree above the clean reservoir and let the filter get on with its business while you tend to
other matters. A couple of minutes later, you have a gallon of clean water. For groups of
people, no other filter type will stack up to the gravity filter.
Like any tool, maintenance is the lifeblood of a filter system. Cleaning is a chore, especially in
the field. Except for the Platypus GravityWorks. For most filters back flowing requires getting
clean water and forcing it back through the filter under pressure. For the GravityWorks, simply
reverse the flow by putting the clean reservoir above the dirty reservoir for a few seconds and
it’s done. This can even be done in the middle of filtering your drinking water.
Clever plumbing makes water procurement easy. There are even accessories like a hydration
pack that hooks directly into the system for maximum convenience. A bonus feature of this
particular style of filter is that it could easily be set up as a shower or sink to sort out any
hygiene issues.

Though you get a lot of convenience with this filter, it does come at a price. Ranging in the
$120.00 area, this is one of the pricier filters on the market. Couple that with any add-on
accessories you might want and you can really spend some money on this setup.


For backpacking or a bug out bag, this isn’t the smallest filter with its two individual gallon sized
bags, filter, and plastic tubing. However, only weighs about 12oz which is quite a manageable
weight for a filter system.
If you are in an arid or dry climate filling the bag can be a pain, often coming down to dipping
water into the bag with whatever is at hand. In these conditions, a pump style filter is really a
better option.
The worst flaw of this filter that I see is its fragility. It doesn’t deal well with being dropped or
banged around. The filter must be kept dry in cold conditions where freezing temperatures will
ruin the filter media and compromise any water you treat with it. That said, checking the filter to
make sure it’s safe is very easy. Simply blow backwards through the filter. If you see bubbles
in the reservoir, the system is broken and will need to be replaced. New filter cartridges are
sold independently of the rest of the system for around $50.00 bucks.

Though the Platypus Gravityworks Water Filter may be expensive and its durability may leave
a bit to be desired, I still think this is one of the best filters on the market. This is especially true
in a situation where you can leave the filter in place at a base camp or home and not pack it
around with you.
It offers adequate treatment of contaminants, decent lifespan, and great flow rates coupled
with easy maintenance and clever design features that make it a leader in the gravity filter
market. If you go solo this filter may be a bit much but for a family or group, this should be the
go-to option.
If you’re unsure how to determine what water filter you should buy, check out our article How
to Choose the Best Survival Water Filtration System.
Are you interested in more survival gear articles? Make sure you head over to our gear page.


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