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The Big Berkey is one of the most popular sizes of their filter line. It’s made up of a two part stainless steel gravity filter system.
The Big Berkey has storage capacity of 2.25 gallons of water. It relies on the Black Berkey water filter elements from New Millennium Concepts to work. These are some of the best filtration elements available.
Not only do they remove 99.9999% of bacteria, viruses and protozoa, they also greatly reduce any lead, chlorine or other chemical contaminants. This makes the Big Berkey suitable for use with any water water source.
Berkey Filters remove the following:
Bacteria like E. coli – Greater than 99.9999%
Chlorine – Removed to Undetectable Levels
Viruses – Greater than 99.9999%
Chloramines – Greater Than 99.9%
Parasites – Greater than 99.9999%
Heavy Metals – Greater than 99.9%.
Pharmaceuticals – Greater than 99.5%
Herbicides & Pesticides – Greater than 99.9%
And more…
The Big Berkey is capable of filtering 3.5 gallons per hour with 2 filters. This is enough for daily use by a family of 4. The metal storage containers are burnished to a high sheen and look great on your countertop.
The elements themselves are each good for 3,000 gallons of water. You can use up to 4 total filters at once for a total flow rate of 7 gallons per hour. This allows you to rapidly expand your water production or preserve your filter elements.
Click here to check the price of a Big Berkey Water Filter.
Pros
Capable of filtering up to 7 gallons of water per minute
Removes 99.9999% of viruses, bacteria, and pathogens
Removes
Stores 2.25 gallons of water
Looks really sharp
Collapses down for easy transport and storage
Filter elements good for 3,000 gallons
Cons
Not the lowest priced (but the quality makes it worth it)
Our #2 Rated Water Filtration System: LifeStraw Community (Great For Families)
Water Filtration System
Features
Our rating
LifeStraw Community
LifeStraw Community
Features
Filter element good for 25,000 gallons
Removes the bulk of viruses, bacteria, parasites and microplastics
Rugged and durable construction
Our Rating
Our #2 Rated
4.8 out of 5
https://www.youtube.com/watch?v=A5AhVd-kU48
The LifeStraw Community takes the highly effective filter system of the original LifeStraw and pairs it with large scale water storage. It has both a 25 liter dirty water tank and a 25 liter clean water tank.
The LifeStraw Community incorporates a pre filter particulate screen that removes dirt and debris before entering the filter. It can filter up to 12 liters of water per hour, removing the bulk of viruses (99.999%), bacteria (99.9999%), parasites (99.99%), and microplastics (99.999%) from the water.
This gives you microbiologically safe drinking water from any source. The filter element is rated for 25,000 gallons. That’s enough to provide water to 100 people for 3 to 5 years.
It’s just under 2’ wide by 2’ deep and is about 3’ tall, so it’s on the larger size for water filtration systems.
The container is made from durable plastic. It collapses down for easy storage when not in use and can be set up in minutes.
The LifeStraw Community is capable of providing all the water you and your family could need for the foreseeable future. It’s great for daily use or to keep in case of large scale emergency.
Pros
Filter element good for 25,000 gallons
50 liter water storage capacity
Easy to set up and use
Provides 12 liters of water per hour
Removes the bulk of viruses, bacteria, parasites and microplastics
Runs completely without power
Rugged and durable construction
Cons
Larger than many other water treatment systems
Doesn’t remove potential chemical contaminants
Our #3 Rated Water Filtration System: LifeStraw Family 1.0 (Most Portable Option)
Water Filtration System
Features
Our rating
LifeStraw Family 1.0
LifeStraw Family 1.0
Features
Lightweight and easy to store
Flow rate of 12 liters per hour
Filter rated to 18,000 liters of water
Requires no power
Removes the vast majority of bacteria, viruses and cysts
Affordable
Our Rating
Our #3 Rated
4.6 out of 5
https://www.youtube.com/watch?v=SC0ReALNAG4
When the original LifeStraw was released, it rapidly became one of the most popular and widely used personal water filters in the world. The LifeStraw Family 1.0 is a larger scale gravity fed version of their effective filter.
It uses a two part system comprised of a small reservoir connected to a filter with spigot. This allows you to hang the reservoir somewhere convenient and dispense filtered water as you like.
The LifeStraw Family 1.0 can filter up to 12 liters of water an hour and is effective at removing 99.99% of viruses, 99.9999% of bacteria and 99.9% of cysts. This leaves you with microbiologically safe drinking water.
The filter is rated for 18,000 liters of water, enough for a family of 4 for 3 years of use. It weighs just 1.6 lbs and the whole system rolls up into the reservoir. This allows you to use it when needed and stow it away when not.
One thing to keep in mind is that the LifeStraw Family doesn’t remove chemical contaminants. If your water supply may have been contaminated by fertilizer runoff or heavy metals, you’ll need additional filtration.
Pros
Lightweight and easy to store
Flow rate of 12 liters per hour
Filter rated to 18,000 liters of water
Requires no power
Removes the vast majority of bacteria, viruses and cysts
Weighs less than a pound and folds down into a very small package
Removes 99.9999% of bacteria and 99.9% of protozoa
Our Rating
Our #4 Rated
4 out of 5
https://www.youtube.com/watch?v=1KVNtjNJsc4
Each reservoir of the Platypus Reservoir contains 4 liters of water. By placing the dirty water reservoir above the clean one, gravity forces water through the filter element.
The filter used is made up of thousands of hollow fibers. This allows it to safely remove 99.9999% of bacteria and 99.9% of protozoa. The design of the hollow fibers also makes it one of the fastest gravity fed filters available.
It can produce 1.75 liters of pure water every minute. Each element is capable of filtering up to 1,500 liters of water before replacement.
The system itself is easy to set up and use. To remove filtered water you just open up the top of the clean water bag and either scoop or pour it into another container.
The whole thing weighs under a pound and can be stowed away in seconds. This makes it perfect for use in tight spaces to quickly filter water then put away.
Like many of the other treatment options on this list, it’s important you recognize what the filter can and can’t do. It does a great job removing bacteria and cysts, but doesn’t filter out viruses or potential chemical contaminants.
Pros
Fast flow rate of 1.75 liters per minute
Capable of storing 8L of total water
Weighs less than a pound and folds down into a very small package
Reasonably priced and easy to use
Removes 99.9999% of bacteria and 99.9% of protozoa
Cons
Doesn’t remove viruses or chemical contaminants
Filter element must be replaced after just 1,500 liters
What to Look For In A Water Treatment System
When comparing water treatment systems there are several key factors that come into play.
These include:
Type and Level of Treatment
Powered vs Gravity Fed
Flow Rate
Water Storage
Type of Filtration/Purification
The first thing you should consider when comparing different water filters is how comprehensively it filters and purifies water.
If your water comes from a well, lake, river or something like a rain catchment system, it’s not going to be microbiologically safe to drink.
There may also be things like agricultural runoff, heavy metals or other major contaminants present.
You need a treatment system that can remove physical particulate matter, filter out contaminants, and disinfect bacteria, viruses, and protozoa.
Some water treatment systems will do this purely with filters. Others combine filters with chemical treatments like chlorine or UV radiation.
For most situations, we don’t recommend chemical treatments. The goal is to become more sustainable after all and chlorine treatment isn’t very environmentally friendly.
On the other hand, UV is great, but it too has limitations. Any water you’re treating with UV radiation must first be run through a filter to remove particulates.
Powered vs Gravity Fed
With water treatment systems, there are two main methods used to actually filter the water:
Powered
Gravity Fed
Powered filters are much less common. For off-grid and sustainable living, they usually run off DC batteries connected to solar and have the ability to filter a lot more water than other systems.
The majority of sustainable water treatment options will be gravity-fed. These rely on two or more containers stacked on top of each other.
The topmost container holds untreated water and the force of gravity moves it through the filter elements.
Gravity-fed filters aren’t as fast as powered filters, but they also don’t require electricity.
This makes them excellent if you’re on solar and trying to conserve energy, or as an emergency backup system.
Flow Rate
Flow rate is one of the most important metrics when comparing different water treatment systems. Powered systems will always be much faster than gravity fed systems.
This only comes into play when you’re dealing with a high demand for water over a very short amount of time. Most gravity fed treatment systems give you about a 1 to 4 gallon flow rate per hour.
By comparison, powered systems can give you that same flow rate per minute. If you need to provide water for a lot of people, a powered system may be the way to go. You should expect to pay a premium for them, though.
Water Storage
One of the key differences between water filters and water treatment systems for off-grid living is water storage. Water treatment systems produce water faster than a water filter and generally have at least a several liter storage capacity.
The most comprehensive water treatment systems don’t have storage. They’re built to filter enough water to fill barrels and cisterns over a relatively short amount of time.
Figure out how much water you want on hand versus the amount of time it takes to treat more. That will tell you how much water storage you need in your system or whether you should go for a higher capacity one that doesn’t store its own water.
Recap Of Our Water Filter Rankings
Water Filters
Big Berkey Water Filter
LifeStraw Family 1.0
Platypus Gravity Works 4L
LifeStraw Community
Our Ranking
Best Overall Option
Our 2nd Best Option
Best Portable Option
Best Family Option
Type and Level of Treatment
Black Berkey filter (100% pathogen filtration efficiency)
You’ll use your water treatment system more than just about any other part of your home. Make sure the one you pick has all the features and capabilities you need, and that it will give you clean drinking water during hard times.
Our overall best pick, and the filter that provides the best solution for filtering out harmful contaminants, like viruses and bacteria, is the gravity fed Big Berkey filter.
It requires no power, removes chemical and biological contaminants, and is capable of providing ample water for a family of 4.
Regardless of which of the water filters you decide to purchase, there are few things as great as a nice, cold refreshing glass of pure water after a long day’s work.
Josh is a freelance writer and avid outdoorsman. He graduated from the University of Georgia with a B.A. in Political Science and has done his best since to live location-independent. He's been a firm supporter of the tiny movement, new homesteaders, and sustainable alternative living and used his knowledge of these topics to convert a 1999 Dodge Ram van to explore as much of Wild America as he could reach.
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