Water filtration systems have evolved tremendously throughout the last decade. No longer is it an expensive or complicated ordeal to obtain fresh, clean, and healthy drinking water.

Best Gravity Water Filter

One of our favorite types of water filtration systems is the simple yet effective gravity water filter.

We’ll look at a few of the best countertop gravity water filters along with some of the best gravity water filters for backpacking. Either way, we have something in here that will work for you.

Best Gravity Water Filter Reviews

1. Big Berkey BK4X2 Countertop Gravity Water Filter System

Big Berkey BK4X2

Highlighted Features

  • The stainless-steel housing is made of high grade 304 steel.
  • It can hold 2.25 gallons of purified water.
  • The system comes with two purifiers, but the system can hold up to four for even cleaner water.
  • There are two additional filters included that are dedicated to removing fluoride from water.
  • The system will remove contaminants but leave the good minerals found in most water sources.

When it comes to a sleek looking, effective gravity water filter, the Berkey checks both of those boxes and more. Made of high-grade stainless steel, this gravity water filter can hold four separate water purifiers and can keep cleaning your drinking water for days on end.

Dedicated fluoride filters are a bonus that removes up to 95% of fluoride in any water supply. This system was designed to work in any situation. If you are a camper, RV’er, or just want to have clean drinking water at your desk, this gravity water filter will clean water from any source.

Assembly is a breeze, and changing filters is even easier. The system comes with two purifying filters and two fluoride filters but can accept up to four of each for even cleaner water. There is no need for electricity or any plumbing installation. Simply pour the water in the top section and let it filter through down to the bottom where it will be cleaned and purified.

What We Like:

  • The stainless-steel housing is only 8.5″ wide. This is nice because it does not take up much counter space.
  • There is an easy-flow spigot at the bottom of the system that is simple to use and does not leak water after use.
  • The purifying elements are of high quality. After testing, we saw a 99% reduction in bacteria, cysts, and parasites.
  • The additional dedicated fluoride filters are extremely convenient, and testing revealed a 99% decrease in fluoride.
  • Each purification filter can last up to 3,000 gallons of water. If you use four filters, you will not need to change them for over 12,000 gallons of water.
  • The lightweight and slim design make it a great option for campers or weekend trips where clean water may be at a premium.

What We Didn’t Like:

  • After a couple of uses, we noticed that the filtration was taking a lot longer than expected.

2. Propur Big Countertop Gravity Water Filter System

Propur Big Countertop

Highlighted Features

  • It uses two filters to ensure no contaminant sneaks through into your water.
  • The filters are approved under NSF/ANSI standard 42.
  • Boasts a 2.75-gallon filtered water capacity.
  • Constructed of 304 steel, which is a high grade.
  • There is a non-slip pad included placing underneath the system to ensure it does not slide around on the counter.

If you have a big family and want the most water out of your investment, then the Propur might be for you. Boasting a nearly 3-gallon water tank, this multi-filter system will take the dirtiest water and make it safe and healthy for consumption.

The size and weight of the Propur unit are especially nice for folks that want to bring their clean water with them. Being that the diameter of the unit is less than 10″, it does not take up much room in the car or RV to bring on the trip. If you are simply looking for an affordable water purification option to use at home, the size of the Propur is small enough that it will not take up a lot of space on the counter.

The all-stainless-steel construction is sleek and strong. There is a spigot at the bottom of the system that distributes the water, and even this is made from stainless steel and is ultra-strong.

It has happened to me multiple times where I am attempting to get a beverage from a spigot, and I turn it, and they just break off! That is no concern with the Propur system as the spigot, and all the components are very strong.

What We Like:

  • Simply put, this thing is huge. 2.75 Gallons is a large size for a gravity filter.
  • The filter quality is awesome. They are rated to remove heavy metals, fluoride, bacteria, and more, all while leaving the beneficial minerals in your water.
  • There is an infused silver layer to the filters that inhibits bacteria growth when the system is not in use.
  • The size of the gravity water filter is just right, not too wide or tall. This makes it easy to put on your countertops.
  • Water can be sourced from a lake, river or pond, and the Propur will make sure it is drinkable in no time.
  • I liked that there was no long installation or plumbing involved. Simply pop the filters in fill it up!

What We Didn’t Like:

  • After a few weeks of regular use, I noticed some rust forming around the top of the system.

3. Zen Water Gravity Systems Filtration & Purification System

Zen Water Gravity

Highlighted Features

  • Designed to remove contaminants commonly found in household tap water.
  • It comes with a 5-Stage filter that includes a Maifan stone level.
  • The filter life is 1,000 gallons with regular usage.
  • Constructed of BPA-Free plastic and the filters are ceramic.
  • It can hold 2.5 gallons of purified water.

The Zen Water Systems gravity filter features a super neat all-clear construction. I can see all the filtering technology working and know exactly how much water I have left before I need to add more. They made an excellent environmental decision by making the plastic 100% BPA-Free as well.

The filters are rated to last up to 1 year with normal usage or roughly 1,000 gallons. That is a lot of drinking water in such a small and convenient size. If you don’t like the water at the office, bringing the Zen Water System is a great solution. It is compact enough to fit on a desk and each time you fill the tank it will provide you with clean drinking water in just a few minutes.

It also comes with a magnetized spigot that will help with easy opening and closing. Because it’s all plastic construction, knowing when to clean it and cleaning it is a breeze. You can either place it in the dishwasher or run some warm water and soap through it yourself. I get a few complaints from folks that can not seem to know when their steel gravity filters need to be cleaned, and this is the perfect solution if you are in the same boat.

What We Like:

  • The plastic construction makes it very mobile and easy to bring with you to the office, basement, or dorm room.
  • There is virtually no maintenance with this gravity water filter.
  • The purifying elements are of high quality. After testing, we saw a 99% reduction in bacteria, cysts, and parasites.
  • The filter is easily changed when it is time for a new one.
  • On some gravity filters, the water takes some time to run through the filtration system. This was not noticed on the Zen System.
  • It is a compact size making it easy to place on your countertop or desk.

What We Didn’t Like:

  • The all-plastic construction feels weaker than stainless-steel and could be cracked easily.

4. LifeStraw Flex Advanced Water Filter with Gravity Bag

LifeStraw Flex

Highlighted Features

  • Removes 99.99% of bacteria, protozoa, and micro-plastics.
  • Exceeds the NSF/ANSI standard 53, which measures lead and other heavy metals.
  • Constructed of a gravity bag that is fully waterproof and can be hung anywhere to let water flow through the filter.
  • Designed for hiking, climbing, and adventurers.
  • The system comes with a filtering straw that can be removed and uses on its own to drink water directly from any water source.

LifeStraw were the pioneers when it comes to water purifying solutions for adventurers and outdoorsmen. Years ago, they created the straw that can take any water supply in the world and make it safe for human consumption. But now, they’ve truly outdone themselves.

Combing excellent filtering technology with a 10-ounce gravity bag has provided us with an awesome solution for having clean water at the campsite. I recently had a few friends go spend the week near Mt. Ranier and asked them to bring this along to test it. It got rave reviews for how easy it to pack, carry, and ultimately use for its intended purpose: Clean Water.

By filling the 1-gallon gravity bag with water from a nearby stream, they were able to have access to clean drinking water. They hung the bag on a nearby tree branch and were able to let gravity do its job and use stream water for all their drinking and cooking needs. If you are an outdoorsman or adventurer, this may be the best camping gravity water filter we’ve tested.

What We Like:

  • The easiest gravity filter to carry around that we have reviewed. It is light and can be completely rolled up to save space in your backpack.
  • The two-stage filter has a fiber membrane and a carbon filter. The fiber membrane removes contaminants, while the carbon reduces odors and heavy metals.
  • The included filtering straw can be used in a variety of ways.
  • The fiber membrane filter lasts up to 500 gallons of use, and the carbon filter can run through about 25 gallons before needing to be replaced.
  • It takes about 10 minutes for the filter to clean the water, which is great considering all the contaminants the filter is removing.

What We Didn’t Like:

  • After about three days of normal use, I had to backflush the filter for it to let the water run through.

5. Platypus GravityWorks Gravity Water Filter System

Platypus Gravity

Highlighted Features

  • Uses two separate water bags attached by a water line with an inline filter attached.
  • Designed to be used by adventures, hikers, or in a survival situation.
  • Meets all EPA/NSF guidelines for bacteria and protozoa removal.
  • Purifies 4 liters of water in about 2.5 minutes.
  • The inline filter can last through 1,500 gallons of water.

One of the most unique, but effective designs we’ve looked at this far is the Platypus GravityWorks bag system. Uses a multi-water bag system, the Platypus was designed with adventurers, hikers, and campers in mind. Relying on 100% gravity, its unique system is fast and efficient at cleaning water from all types of sources.

It comes with two distinct bags connected by a water hose. In the middle of the water hose is a filter. Fill the bag marked, “Dirty” with water from any source including ponds, lakes, or streams and hang it up high. The water will filter through the line and get purified before entering the bag marked, “Clean.”

Once the “Clean” bag is filled, you can now use it for anything you’d like around the campsite. Because you get 4 liters of clean water from this system, you can use it for cooking, cleaning and, of course, drinking without the need to ration. The water bag reservoirs are made of thick, durable material and are a good addition to any camping trip.

What We Like:

  • Super light and mobile, it was easy to roll and pack into my bag.
  • The filter life is awesome for a hiking gravity water filter.
  • The flow rate of the water through the hose is fast.
  • The inline filter did a great job of removing odors and color from river water that I tested.
  • The amount of water that these bags can carry is more than most of this type.
  • Replacement water hose is available and very affordable.

What We Didn’t Like:

  • After a couple of uses, we noticed that the filtration was taking a lot longer than expected.

6. Katadyn BeFree 3L Gravity Filtration System

Katadyn BeFree

Highlighted Features

  • It contains a 0.1-micron filter which surpasses EPA standards.
  • Constructed of a hydro-pack material that is fully collapsible.
  • It can be hung from a tree or any raised object to allow gravity to force the water through the filter.
  • There is a spigot at the bottom of the water bag, and it allows a flow rate of 2-liters per minute.
  • It can hold up to 3 liters of water.

The simplicity of the Katadyn gravity filter is something that I really liked. There are no water lines that can get tangled up and no added components that can cause headaches if they go missing. The only set-up involved is attaching the filtering spigot to the hydro-pack bag, and you are good to go.

The value you get from the Katadyn gravity filter is a great deal. Coming in at less than $60, you are getting a lot for your money. The filter life is strong, and changing them is a breeze, which is a nice feature when you are on the go and do not want to fiddle with tools or multiple parts.

There is an open handle in the hydro-pack on the top of the water pack. It is re-enforced to ensure that wherever you hang the bag, it is staying there. I have reviewed other hanging gravity filters, and occasionally, I will run across one that can contain the weight of the water without bending. We love this option for camping, hiking, or adventurers; the simplicity cannot be understated.

What We Like:

  • The empty water pack is light and can be rolled to save space while packing.
  • The filter life is solid, and it can handle up to 1,000 liters before needing to be replaced.
  • Because the bottle is fully squeezable, it can be used for cooking, cleaning, and healthy drinking water.
  • Water testing showed that the membrane filter does a great job of reducing water contaminants.
  • The filter does not need to be backflushed ever. Simply shake it and will make the filter good as new.

What We Didn’t Like:

  • The hydro-pack material does not feel as durable as other water bag options we’ve reviewed this far. When testing, I was worried about it puncturing.

Buying Guide: How to Buy a Gravity Water Filter

We know what you’re thinking, how on earth do I choose the right gravity water filter for me. Luckily, thanks to our endless amounts of knowledge, we can go through this together and help you decide which is best for you. Remember, there is no single best gravity water filter; there is only a perfect one for you and your situation.

To help you decide, you will need to look inward and answer several questions that will help you determine exactly what you are looking for.

How Will You Use Your Gravity Water Filter?

Quite frankly, this is the most important question, and there is a reason it is first on our list. You need to know exactly what you want to get out of your gravity water filter, set goals for the system. There are a few different reasons why you would want to use a gravity water filter, and narrowing down these reasons will help you find the perfect filter.

Home Use

If you are dealing with a home water supply that smells bad and tastes even worse, a home gravity filter may be a good option for you. There are so many contaminants found in all types of water supplies, and if you are avoiding drink your water at home because of a fear of lead, fluoride, or chlorine, then an at-home gravity water filter is perfect for you.

One thing I suggest for all my friends that want to get a gravity filter for the home is to perform a simple water test. You can purchase a home water test kit from several stores and online. This test will reveal exactly what is in your water. It lets us know exactly which gravity filter would be the best to combat your specific water supply.

Another reason you may need a home gravity water filter is for our environment! If you can only drink bottled water due to poor water supply, then an at-home filter is a great option for you. Most filters can eliminate hundreds of single-use plastic water bottles over a year, greatly reducing your carbon footprint.

Adventurers and Outdoorsmen (On-The-Go)

Another great use for a gravity water filter is for those of you who like to go camping, hiking or go on epic outdoor adventures. Having the ability to purify and clean water from a lake, pond, stream, or any other supply is unbelievably important.

If you are looking for something that requires no tools, no electricity or maintenance and can filter any water quickly, then you are in the right spot. Gravity filters that are designed to work in the rugged outdoors need to be set-up and stored quickly and efficiently. Something with multiple parts and tiny little screws is not your best bet.

In case of an emergency, these gravity water filters can be a lifesaver (literally.) If you are ever in the unfortunate situation where you need to use floodwater or rainwater to stay hydrated, having one a gravity-fed filter can be worth its weight in gold.

Water Capacity

Different situations will call for different amounts of water. We will look at both home use systems and the outdoor-based systems and figure out exactly how much water you will need to stay hydrated

Home Use

Gravity water filters come in all shapes and sizes. Typically, the price will also go up with more water than it can manage at one time. Most filters that are best suited for home-use will have a clean water reservoir that has a maximum operating water level. You may think that the biggest is always better, but that is not always the case.

I always tell my friends that when it comes to water capacity, do not buy a 5-gallon filter if you’re only going to use a gallon or two. Pushing extra water through your filtering system reduces the life of the filters, and you will end up having to replace them sooner than later.

How many people will be using the gravity filter and how often are the biggest factors in deciding the size of the filter. You’re not going to buy a half-gallon filter for a family of 4 relying on that water for everyone, right? It is recommended that everyone consume at least a half-gallon of water every day. Make sure you are accounting for everyone when deciding on your home filter.

Adventurers and Outdoorsmen (On-The-Go)

When deciding on the capacity of your on-the-go gravity water filter, you need to be aware of how much access you will have to water. If you’re camping by a lake, then no big deal, you’ll have access at nearly all times. But not all of us can be in that situation, we may find ourselves in an environment where water is not always accessible.

Before you head out, make sure you have an idea of the area you will be hiking and climbing, and if there is not a close water source, prepare for that.

Some on-the-go gravity water filters will only hold a couple of liters of water; others will hold up to 4 and more. The environment you will be in will dictate which is best for you. Keep in mind; if you are camping, you will need water to clean and cook with, so make sure you take that into account.

Combining these factors with the number of people that will rely on this water supply should all be considered.

Physical Size

Something a lot of people do not seem to investigate; is how big their gravity filter will be. I have seen numerous situations where someone will order a countertop gravity water filter, and it does not fit on the countertop or where they wanted it.

Home use systems and outdoor systems need to consider different factors when it comes to the actual size of the gravity-fed water filter.

Home Use

I have seen this a few times this year already; someone orders a gravity filter system to place on their countertop, and it does not fit underneath the cupboards! They end up scrambling to find a place to put it that isn’t an eyesore, and then it ends up in the closet.

You MUST scope out where you want to put your home gravity filter. Some of them are very tall (more water) and will not fit on a lot of countertops in kitchens. Make sure before you purchase that the gravity water filter will physically work for you!

Adventurers and Outdoorsmen (On-The-Go)

You already have enough to stuff to fit into your hiking backpack, why let the size of your water filter keep you from bringing some more essential items? Finding the simplest, most compact mobile gravity filter is imperative for those of you who need to save as much space as possible.

Many on-the-go gravity water filters are made of fully collapsible material that can fold into itself when empty. The more water capacity you have, the bigger the empty water bag, which is another reason why bringing more water capacity than needed is not a great idea.

Another thing to look at with outdoor gravity water filters is additional parts in addition to the water reservoir. If there are multiple pieces, filter parts, or water lines, you may want to find one with less moving parts.

Personally, I bring a lot of stuff in my camping backpack and would hate to lose space to my filtering system. While it all comes down to personal preference, finding the right size for you is the most important thing.

Filtering Capability

In the end, the goal of both on-the-go systems and home use systems is to provide clean and safe water. Choosing a gravity-fed filtering system that can accommodate your specific water needs is massively important.

Home Use

Some gravity water purifiers come with filters that are better at removing specific contaminants than others. Based on your home water supply, you must choose a system that can filter out exactly what is in your water.

Remember, the common contaminants found in a city water supply will be different than water that is coming from a well. Make sure to get your water test and know exactly what you need.

Adventurers and Outdoorsmen (On-The-Go)

Naturally, water that comes from natural resources will have different contaminants than water process water supplies.

Because it is hard to know exactly where your water will be coming from in this situation, make sure you investigate a gravity filter than can remove the most bacteria, cysts, and other contaminants commonly found in lakes, rivers, and streams. I doubt you will find a lot of chlorine there, so make sure you’re choosing one that will filter any sediment as well!

Gravity Water Filter FAQs

What exactly does a gravity water filter do?

A gravity water filter will use basic physics forcing water to flow downward (gravity!) and through the filtering system into a clean water reservoir.
Are gravity water filters as effective as other filtration methods?

This depends entirely on the filter. But you can achieve the same filtration results from a gravity water filter as you can with a water bottle filter or under-sink unit.

 What are the advantages of a gravity water filter?

There are many! Because this filtration type relies solely on gravity to force water into the filter, there is no electricity or plumbing needed. Another thing we love about gravity water filters is their mobility. Many models can be brought with you easily and can clean whatever water supply you’d like!

Are there any disadvantages of using a gravity water filter?

When it comes to water quality, there is no downfall. The only thing that I remind people of is that MOST gravity water filters have a limit to how much water you can filter at one time. But there are numerously available that do not rely on limited tank size.


As you can see, there are a lot of quality options for gravity-fed water filters. If you want simple and maintenance-free filtered water, then a gravity water filter might be the best choice for you to get started. Our favorite choices in this article were thoroughly researched and tested and are a great place to start your search for the best gravity water filter.

We are confident that with this guide and set of reviews, the perfect gravity-fed water filter is in this guide somewhere. We appreciate you taking the time to read this guide and hope that our recommendations will provide you with all the information you need to bring cleaner and healthier water to your life!

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