11 Best Gravity Water Filters

Water filters are an essential tool when it comes to obtaining clean and healthy water. Therefore when it comes to water filters, it is always great to start with the one that simply works without any fuss. Look no further than the gravity water filters. 

Now depending on your needs whether that will be for an outdoor expedition or simply for everyday use, gravity water filters are the “one size fits all” type of water filter. Now the question is, what is the best gravity water filter you can get? That will become clear to you as you go through this amazing article. 

DISCLOSURE: We may receive commissions when you click our links and make purchases. However, this does not impact our reviews and comparisons. We try our best to keep things fair and balanced, in order to help you make the best choice for you.

Our Top Pick


Big Berkey

Filter up to 99.9% of bacteria, 99.7% Microcystin, & 95% Selenium, fluoride and more. With 2.1 gallons storage container, it is capable of producing 6000 gallons of filtered water. It is affordable and definitely recommended. 

Things to Consider Before Buying a Gravity Water Filter

Before investing in a water filter solution, take a look at the couple of things below you need to consider before purchasing one. 

Filter Capability

Filtration capability is one of the important things to consider as it determines the quality of your drinking water. Some of them may only come with a simple filtration system (sediment and carbon filter combo) while others may come with complicated or specialized ones. 

Additionally, some water filters are capable of retaining or adding in healthy minerals that may be beneficial to you. Depending on your needs, choose the water filter that has the potential to remove the right contaminants found in your current water supply.

Filter Lifespan and Maintenance

Another thing to consider before investing in a gravity water filter is the filter’s lifespan and maintenance cost. Most water filter cartridges normally have a good lifespan of around 2-4 months before a replacement is needed. However, the longer the filter can last the less maintenance frequency required. 

In terms of maintenance, check if the replacement cartridges are within your annual budget. Furthermore, it is recommended to identify if you need to do other maintenance aside from replacing the filter cartridges. 

Tank Capacity

Tank capacity is also an important factor since most gravity water filters can be relatively slow in terms of its flow rate thus it requires a water tank to store its clean water. It can vary in size from a small 1-gallon to a 6-gallon one. For a small family, it is recommended to use a larger tank which not only gives you plenty of water but also limits the amount of times you need to filter your water.

Therefore, it is great to consider how much water your household consumes per week before investing in a gravity water filter. 

Portability and Storage

Many gravity fed water filters come in many sizes depending on your needs. Small gravity water filters are made for travelling. They are compact and portable but they do come in with some compromises like a smaller tank capacity. 

On the other hand, bigger water filters like countertop models have excellent filtration performance and have a bigger tank capacity, making it ideal for indoor use. However they fall short in portability and compactness as they normally take a huge amount of space. 

Consider the use cases of your potential water filter. Take note of if you need to bring it outside of your home as well. 

Gravity Water Filter Comparison

Image PRODUCT/ Features Rating  
Top PickComparing Big Berkey Big Berkey Filtration Capability: filters & removes up to 99.9% of bacteria, 99.7% Microcystin, & 95% Selenium and more.
Storage Capacity: 2.1 gallons
Cost: $$$, $120 yearly
Lifespan: 6,000 gallons
Read Full Review
Budget PickComparing WaterDrop Straw Filter WaterDrop Straw FilterFiltration Capability: filters & removes up to 99.9% of bacteria, protozoan, chlorine and more.
Storage Capacity:
1.5 gallons
$, $15 yearly
100,000 gallons
Read Full Review
Outdoor PickComparing Platypus GravityWorks Platypus GravityWorksFiltration Capability: filters & removes up to 99.9% of bacteria, protozoa, E.Coli, salmonella, cholera and more. 
Storage Capacity:
1.58 gallons
$$, $55 yearly
396 gallons
Read Full Review
Comparing Zen Water Systems Zen Water SystemsFiltration Capability: removing chlorine, radon, solvents, pesticides and other volatile organic chemicals.
Storage Capacity: 4 gallons
$$, $68 yearly
500-1000 gallons
Read Full Review
Comparing Propur G2.0 Propur G2.0 Filtration Capability: contaminants like pesticides, fluoride, herbicides, chloramines, bacterias and heavy metals.
Storage Capacity:
1.6 gallons
$$, $140 yearly
6 months
Read Full Review
Comparing Doulton SS-2 Doulton SS-2Filtration Capability: reducing up to 99.99% of bacteria,Cysts, 95% chlorine and VOC. 
Storage Capacity:
2.25 Gallons
Cost: $$$, $72 Yearly
6 months
Read Full Review
Comparing MSR Trail MSR TrailFiltration Capability: filtering and removing up to 99.9% of bacteria, protozoa, particulate, giardia, cryptosporidium and salmonella.
Storage Capacity:
2L and 4L
$$, $35 Yearly
528 Gallons
Read Full Review
Comparing Sawyer One-Gallon Sawyer One GallonFiltration Capability: removing up to 99.9% of bacterias such as salmonella, cholera and E.Coli and protozoa.
Storage Capacity:
1 gallon
$, $20 yearly
100,000 gallons
Read Full Review
Comparing ZeroWater 40-Cup ZeroWater 40-CupFiltration Capability: removing up to 99.6% of harmful contaminants including heavy metals like lead, copper, iron and manganese.
Storage Capacity:
2.5 gallons
$$, $60 yearly
40 gallons
Read Full Review
Comparing Outback Plus Outback PlusFiltration Capability: removing up to 99.6% of harmful contaminants including heavy metals like lead, copper, iron and manganese.
Storage Capacity:
2.5 gallons
$$, $60 yearly
40 gallons
Read Full Review
Comparing Santevia SanteviaFiltration Capability: removing contaminants such as heavy metals, herbicides and up to 99% of chlorine for taste and odor. 
Storage Capacity:
2.5 Gallons
$$, $218 Yearly
317 Gallons
Read Full Review

Gravity Water Filter Review 

1. Big Berkey Water Filter 

review of Big Berkey Water Filter

If you are looking for a long lasting gravity water filter without sacrificing performance, then Big Berkey may have the answer for you. It’s 6000 gallon capacity with excellent certified filtration performance makes this a great filter worth considering. 

Filter Capability: Big Berkey typically uses a pair (can use up to 4 filters) Black Berkey Filters which claims to be more powerful than other gravity filters. It is capable of removing the following:

  • up to 99.9999% of Pathogenic Bacterias and Cysts (E. Coli, Klebsiella, Giardia, Cryptosporidium, etc.), Viruses, Parasites, Heavy Metals and more.
  • up to 99.7% of Microcystin & 99.97% of Microcystis.
  • up to 95%  of Selenium, Thallium, and Nitrites.
  • up to 75% Glyphosate.
  • Other VOCS, MTBE, THM, Chlorine and more are removed below detectable limits.

ANSI / NSF Certified: Big Berkey’s included filters have been independently tested to exceed the EPA 7 ANSI / NSF standards which ensures great filtration capability. You can see their independent lab test results as well. 

Storage Capacity: Big Berkey can store up to 2.1 Gallons (or 8.5 Liters) of clean water. 

Maintenance: A pair of Black Berkey filters can produce clean water up to 6000 gallons (or up to 4 years when filtering up to 4 gallons per day) before a replacement is needed. You can also clean these filters during their 6000 gallon lifetime in order to maintain its flow rate. It can be done by scrubbing it with a ScotchBrite pad with water. 

Annual Maintenance Cost: $120 every 4 years.

+ Excellent Black Berkey Filters
+ EPA 7 ANSI / NSF certified filters
+ Long lasting filters.
+ Large 2.1 gallon clean water storage
Bad rubber taste reported by some customers.

To learn more, visit our Big Berkey water filter system review today.

2. WaterDrop Water Filter Straw with Water Bag

review of WaterDrop Water Filter Straw with Water Bag

WaterDrop’s water filter straw is one of the most well sought out backpacking water filters for its compact size and filtration performance. Adding a gravity bag brings it to the next level. 

Filter Capability: WaterDrop Water Filter Straw is a 4-stage filtration system which consists of the pre-filter fabric, hollow fiber membrane, activated carbon fiber, and post polyester membrane. 

  • Pre-Filter Fabric – Removes small debris such as dirt, stones, leaves, etc.
  • Hollow Fiber Membrane – A 0.1-micron filter that removes up to 99.9% of common bacterias and protozoans. These include Escherichia Coli, Vitriol Cholerae, salmonella typhi and also protozoans.
  • Japanese activated Carbon Fiber – Uses high-grade coconut shells which are designed to reduce chlorine thus improving taste and odor.
  • Post Polyester Membrane – This is the last stage of the filter that removes rust, sediments, particulates and other types of

Compact and Easy to Carry: WaterDrop’s portable water filters bring compactness to the next level and its gravity filters are no exception to this. The package consists of a  1.5 Gallon capacity gravity-fed water bag (which is foldable into any shape for storage), extension hose, shoulder strap and the water filter straw itself. These are quite compact and do not take up a large amount of space. 

Build Quality: WaterDrop Gravity Filter’s components are manufactured with BPA-free and ultra-durable TPU materials. The water bag itself is made out of durable food-grade plastic that is able to withstand long-term use. 

Maintenance: Each WaterDrop water filter straw has a long lifespan of 100,000 gallons before a replacement is needed. It can also be easily cleaned in order to maintain its performance. No need for a backwashing syringe or other tools. Simply flush through the filter with clean water. 

Annual Maintenance Cost: $15 Yearly

+ 4-Stage water filtration system
+ Excellent filter lifespan
+ Build quality
+ 1.5 gallon sized water bag included
Slow water flow

3. Platypus GravityWorks Water Filter

review of Platypus GravityWorks Water Filter

Holding an incredible rating of 4.9 out of 5.0, the Platypus GravityWorks Water filter has been praised by many satisfied customers for its fast water flow and excellent filter performance.  

Filter Capability: Platypus GravityWorks uses its own EPA and NSF tested 0.2 micron proprietary water filters. They are capable of filtering up to 99.9% of bacteria and protozoa including giardia, cryptosporidium, E. Coli, salmonella, and cholera. 

Fast Water Flow: GravityWorks has an incredible fast water flow despite the gravity is doing all the hard work of pushing it into the filters. It can filter and clean water up to 1.75 liters per minute. 

Dual Water Reservoir: Unlike other gravity filters where you only get a water bag for untreated water, Platypus GravityWorks includes two 6.0L water bags (one for untreated, dirty water and the other for storing clean, filtered water). 

Maintenance: Each GravityWorks water filter cartridge has a reasonable lifespan of around 396 gallons before a replacement is needed. The filter cartridge’s microfilter can be easily backflushed in 4 seconds in order to maintain its optimum performance.  Platypus also offers replacement reservoirs, hose, bottle adapter and cleaning kit as well for any maintenance duties. 

Annual Maintenance Cost: $55 Yearly

+ 0.2 micron filtration system
+ Dual water reservoir
+ Fast water flow
Bulky bags

Learn more at our Platypus GravityWorks review today.

4. Zen Water Rejuvenate 

review of Zen Water Rejuvenate

Gravity Water Filters are not primarily made for outdoor use, there are some that are great for indoor use as well. Zen Water Rejuvenate is a countertop water filter that features an excellent filtration system, great tasting water and more. 

Filter Capability: The Rejuvenate 7-stage filtration system consists of a Micro Ceramic Filter cartridge, 5-Stage Mineral Filter Cartridge and Maifan Mineral Stones. 

  • Micro-Ceramic Filter Dome: Sits on top of the tank. It is the first stage in filtering and cleaning water. It simply traps dirt and gunk that would usually accumulate on the surface. 
  • Granulated Activated Carbon: Effective at removing chlorine, radon, solvents, pesticides and other volatile organic chemicals. It also improves taste and odor. 
  • Ionic Exchange Resin (Mineral Sand): The stage used to soften water by replacing the cations with sodium ions. 
  • Far Infrared Ceramic Balls: Helps activate healthy minerals that are quite beneficial to humans.
  • Natural Zeolite: It filters and removes viruses and contaminants down to 4 microns. 
  • Magnetic Tap: reduces the effects of hard water by passing the water through a magnetic field. 
  • Maifan Mineral Stones: The last stage of the filtration process that specializes in removing heavy metals and other impurities. It also releases healthy minerals. 

Large Water Reservoir: Rejuvenate has an excellent water capacity of around 6-gallons (2-gallons for the top tank and 4-gallons for the bottom tank) which is nice to have where you can store your clean water. 

Maintenance: In terms of maintenance, each water filter cartridge has its own water filter capacity before a replacement is needed in order to maintain its optimal performance. Kindly refer below for each individual lifespan:

  • Micro Ceramic Filter – Lifespan of 1,000 gallons or 1-Year and cost $18.00 per year.
  • 5-Stage Mineral Filter – Lifespan of 500 gallons or 6-Months and cost $32.00 per year for 2 pieces.
  • Maifan Mineral Stones – Lifespan of 3-Years and cost $18.00.

Annual Maintenance Cost: $68 Yearly

+ 7-stage filtration system
+ Large 6-gallon capacity
+ Great tasting water
Complicated Maintenance

Please visit our Zen water systems review to learn more.

5. Propur Traveler Gravity Water Filter

review of Propur Traveler Gravity Water Filter

If you are looking for a gravity water filter that can withstand everyday use whether that is indoors or outdoors, Propur Traveler got you back. It’s great stainless steel build quality and long lasting filter makes this worth considering for daily use. 

Filter Capability: Propur Traveler uses ProOne G2.0 filter that comprises of a Porous ceramic material that allows water to be effectively absorbed by the filter and a Granulated Activated Carbon (GAC) which is used for reducing and removing contaminants like pesticides, fluoride, herbicides, chloramines, bacterias and heavy metals. 

Another feature to note about the ProOne G2,0 is that it is also silver infused with help which helps prevent any future growth of bacteria on the water. The filters are also certified NSF/ANSI-42 and are independent lab tested to ensure great tasting water is produced. 

High Quality 304 Stainless Steel: When it comes to build quality and design, Propur Traveler is primarily made from durable 304 stainless steel material. It is resistant to corrosion and rust plus it is also easy to clean. 

Maintenance: The ProOne G2.0 filter cartridge can last up to 6 months of daily use before a replacement is needed. Each water filter cartridge costs around $70 which is kind of pricey but works well nonetheless. 

Annual Maintenance Cost: $140 Yearly

+ ProOne G2.0 filtration system
+ High quality 304 stainless steel
+ Long lasting filters
Expensive annual maintenance cost

6. Doulton SS-2 Gravity Water Filter

review of Doulton SS-2 Gravity Water Filter

The Doulton SS-2 is another good gravity water filter that is super effective when it comes to filtration performance, self sterilizing plus its excellent stainless steel build quality. 

Filter Capability: Doulton SS-2 uses their 3-stage Doulton Super Sterasyl 7” filtration system. This filter is NSF certified to standards 42 and 53 as well. It comprises of the following stages in order of filtration process and their functions:

  1. Super Sterasyl Ceramic Layer: The first layer that provides sub 0.2 micron filtration. It is capable of reducing up to 99.99% of bacteria and Cysts. It is able to remove up to 98% of 98% of turbidity as well. 
  2. Silver with Ceramic Layer: Contains oligodynamic silver for disinfection, this layer is capable of eliminating further bacteria that is trapped in the ceramic’s pores. This prevents any future bacteria growth. 
  3. Granular Activated Carbon (GAC): Acting as the post filter, this layer filters and reduces up to 95% of chlorine and removes VOC’s and industrial solvents. 

Self Sterilizing: Doulton claims that all of their filter elements are self sterilizing thus it is bacteriologically safe for cleaning and handling. 

High Grade Polished Stainless Steel: Like the Propur Traveler, the Doulton SS-2 is made from high-quality portable stainless steel material. This is not just durable but also it will look good on the shelf due to its polished design. 

Maintenance: Doulton recommends cleaning the water filter every 3 months or when the water flow is noticeably slower. The Doulton Super Sterasyl filter cartridge has a good lifespan of around 6-months before a replacement is needed. Each 7” filter cartridge cost around $36.00.

Annual Maintenance Cost: $72 Yearly

+ Great filtration performance with the super Sterasyl filter
+ Self sterilizing filter elements
+ Build quality
Customers reported chlorine still retains after filtering
Spigot leaking

7. MSR Trail Base Gravity Water Filter

review of MSR Trail Base Gravity Water Filter

Featured in 2018 as the Best Buy for Outdoor Gear Lab, the MSR Trail Base not only comes from a well known brand since 1969, but excels in filtration performance, fast water flow and versatility for outdoor use. 

Filter Capability: The MSR Trail Base uses the same 0.2 micron filtration system with their smaller brother, the TrailShot which is effective at filtering and removing up to 99.9% of bacteria, protozoa and particulate. 

It also features Hollow Fiber Technology that traps other harmful contaminants such as giardia, cryptosporidium and salmonella. It removes iodine and chlorine as well for improving taste and odor. 

Versatile Water Filter System: Due to its modular components, this allows the MSR Trail Base to be fitted with either a 2L or 4L water reservoir bag. This applies to both clean and dirty water bags. 

Fast Water Flow: What stands out with MSR Trail Base is its strong water flow. It is able to filter up to 1 liters per min which is incredibly fast.

Maintenance: Each MSR Trail Base’s water filter cartridge has an impressive lifespan of around 528 Gallons (2000 Liters) before a replacement is needed. It also comes with a limited warranty. 

Annual Maintenance Cost: $35 Yearly

+ Hollow Fiber Technology filtration performance
+ Fast water flow
+ Versatile configuration
Small water filter bags

8. Sawyer One Gallon

review of Sawyer One Gallon

Sawyer’s gravity water filter is another great product to consider when it comes to excellent 0.1 micron filter, long lasting filters and versatility. 

Filter Capability:  Sawyer Gravity Water Filter uses the 0.1 micron Sawyer Dual-Threaded Mini water filter cartridge that comprises Hollow Fiber Membrane Technology which allows water to flow through the tiny micro-pores. It is also 75% stronger which gives you fast water flow but also allows backwashing without losing 98% of the original flow rate.

In terms of filtration performance, the Dual-Threaded Mini is capable of filtering and removing up to 99.9% of bacterias (such as salmonella, cholera and E.Coli) and protozoa (such as giardia and cryptosporidium). It can remove up to 100% of microplastics as well. 

Ensuring its filtration quality, it has been independently tested by many laboratories including Laboratory Hydrieon, LCC, and Aquadiagnostics Laboratories. 

Versatile Water Bags: Like the MSR Trail Base, the Sawyer Gravity Water Filter can be configured with either a dual 1-gallon bladder (one for clean and dirty water reservoir) or with only a single 1-gallon bladder (dirty water reservoir only). This can be very versatile depending on the needs of the user. 

Maintenance: One of the most prominent features of the Sawyer Mini cartridge is that it is rated to filter water up to 100,000 gallons which is very impressive overall. Adding the backwashing feature may also help out in not just extending the life of the filter but also maintaining the filtration performance.

Annual Maintenance Cost: $20 Yearly

+ Sawyer dual-threaded Mini Filter
+ Long lasting filters
+ Versatile water bags
Small capacity water bags
Some customers reported water bags leaking

9. ZeroWater 40-Cup Gravity Water Filter

review of ZeroWater 40-Cup Gravity Water Filter

Another gravity water filter with a high performing 5-stage filter, sleek and modern design plus a feature not found in most water filters makes this worth considering on your list. 

Filter Capability:  ZeroWater uses the ZeroWater high performance 5-stage filter system. It is capable of removing up to 99.6% of harmful contaminants including heavy metals like lead, copper, iron, manganese and more. For more filter performance results, you can check their official website. Listed down each of the 5 stages in order and their individual functions:

  1. Coarse Filter Screen: Functions similar to a sediment filter which filters and removes fine particles such as dirt and debris.
  2. Foam Distributor: This functions by dispersing water across the entire width of the water filter. This makes it more effective at using the filters.
  3. Multi-Layer Activated Carbon & Oxidation Reduction Alloy: Starting with the Carbon layer which filters contaminants and improves taste while the Oxidation Reduction Alloy removes chlorine and other metals. It also keeps mold from forming.
  4. Dual Comprehensive Ion Exchange Resin: This transforms the filtered water into its pure state by utilizing negative and positive ion exchange.
  5. Ultra-Fine Screen & Non-Woven Membrane Layers: The last stage which removes ultra-fine particles.

Modern Design: One thing that sets this apart from the best of gravity water filters is the modern design. It is made out of a sleek glass container with polished steel on both the top and bottom parts. This brings it more of a modern look and will fit very well on a kitchen countertop.

TDS Meter: A bonus feature of the ZeroWater is they include a water quality meter or TDS test kit which can be used to measure total dissolved solids. This is a nice feature to have especially for people who are first starting out on using a water pitcher filter.

Maintenance: In terms of maintenance, the ZeroWater’s filter cartridge has a lifespan of around 3-5 months or 40 gallons before a replacement is needed. Each ZeroWater replacement cartridge cost around $15.00.

Annual Maintenance Cost: $60 Yearly

+ ZeroWater high-performance 5-stage filtration system
+ Modern design
+ Free TDS meter included
Some customers reported metal shavings in the water
Short water filter lifespan

10. Outback Plus Gravity Water Filter

review of Outback Plus Gravity Water Filter

Used by the International Red Cross and Peace Corps, the Outback Plus OB-25NF is a gravity water filter made for harsh outdoor use due to its rugged build but also does not sacrifice its filtration performance So, If you are looking for a utilitarian type of water filter that is meant for outdoor use, then this may be the right choice.

Filter Capability: Used by many disaster relief organizations for over 25+ years, the Outback Plus uses a 4-stage filtration system which is capable of filtering and removing up to 99.9% of bacteria (such as E.Coli, Giardia, and Cryptosporidium), cysts, viruses, pesticides, herbicides and more. 

The filter has also been tested and meets the EPA Standards for virus reduction. Furthermore, It can produce up to 6-12 gallons per day and works well on fresh water.

Rugged and Durable: Designed originally for disaster preparedness and survival, the Outback Plus’ rugged and durable build quality is superb. It is great to use in either daily use or for travelling in harsh conditioned places. 

Large Capacity: Outback Plus includes a large 5 gallon bucket for storing clean and filtered water. Outback Plus also included a 2 gallon bucket for untreated water as well. 

Maintenance: In terms of maintaining the water filter, the Outback water filter cartridge has a good lifespan of around 1,800 gallons before a replacement is needed. Furthermore, the filters can last for about 12 months. 

Annual Maintenance Cost: $130 Yearly

+ EPA standard 4-stage filtration Performance
+ Rugged and durable
+ Large capacity
Expensive maintenance costs

11. Santevia Gravity Water Filter

review of Santevia Gravity Water Filter

If you happen to discover your drinking water contains fluoride, then the Santevia Gravity Water Filter may be worth considering. Specializing in fluoride removal, it features an excellent 7-stage filtration performance. 

Filter Capability: Featuring a 7-stage filtration process, the Santevia’s filtration system comprises 2 components which are the Ceramic Pre-Filter and Fluoride Filter. The 0.3 micron Ceramic Pre-Filter acts as the first stage that is capable of removing microplastics, rusts, bacteria and sediment. 

Next is the Fluoride Filter that features a 6-stage filtration process that primarily specializes in removing up to 100% of fluoride. Furthermore, it is capable of removing contaminants such as heavy metals, herbicides and up to 99% of chlorine for taste and odor. Listed down each of the stages in order and their individual functions:

  1. NSF Certified Activated Alumina: It filters and remove up 100% of fluoride
  2. NSF Certified Granular Activated Coconut Carbon: filters and removes herbicides, industrial chemicals, herbicides and heavy metals. It also improves taste and odor by eliminating chlorine. 
  3. Kinetic Degradation Fluxion: Further reduces chlorine and prevents bacteria and mold growth. 
  4. pH Mineral Balls: Increases pH and adds important minerals like calcium and magnesium. 
  5. Mineral Stone Infusion: Helps oxygenate water and restore alkalinity.
  6. Natural Silica Sand: polishes the water and initiates optimal pH balance. 

Mineral Stones: Aside from its specialization on removing fluoride, Santevia features a set of mineral stones that comprises maifan stones and bio-ceramic energy balls. These are quite beneficial as it releases healthy minerals and maintains the alkalinity of the water. 

Santevia claims that it also improves the taste of the water and that it mimics the water from fresh mountain streams. 

Maintenance: In terms of maintenance, each component of the Santevia features its own water filtration capacity before a replacement is required in order to maintain its performance. Kindly refer to the table below for each individual lifespan:

  • Ceramic Pre-Filter – Lifespan of 1-Year and cost $43.00 per year.
  • Fluoride Filter – Lifespan of 317 gallons or 4-Months and cost $135.00 ($45.00 each)
  • Mineral Stones – Lifespan of 2-Years and cost $40.00 per year.

Annual Maintenance Cost: $218 Yearly

+ 6-Stage Fluoride Filtration System
+ Mineral Stones
+ Great Tasting Water
Expensive Maintenance Costs
Some customers reported mold growing

What are Gravity Fed Water Filters?

One of the easiest and simple to use, gravity water filters are one of the earliest types of water filters developed with evidence stating that our ancestors have been using one since then. Nowadays, most gravity water filters have been modernized and provide an effective but simple solution to water filtration. 

Gravity-fed water filters consist of two water tanks stacked on top of the other with a filter element in the center between them. Simply pour in untreated water into the upper tank then allow gravity to push the water through the filter, thus filtering contaminants and releasing clean water into the bottom tank. 

How Does a Gravity Water Filter Work?

From the name itself, most gravity water filters function through the use of the force of gravity. It works by pouring untreated water in the upper tank and letting gravity push the water through various layers or stages inside the filters. It contains microscopic pores which traps contaminants and other impurities thus allowing only water molecules to pass through instead. 

These layers may vary from one another but examples of common stages found in a gravity water filter include sediment filter (for removal of dirt and debris), Activated Carbon Filter (for improving taste and odor plus removing contaminants). Clean and filtered water simply drains from the filter and into the bottom tank. 

A man sipping water from a Waterdrop Water Filter Straw with Gravity Water Filter bag

Benefits of a Gravity Water Filter

There are many benefits that you can get when it comes to using gravity water filters. When it comes to reliability and convenience, these  water filters are the kind of water filters that simply work. It does not require any electricity unlike the others to work. In terms of convenience, simply fill the reservoir and the filter does its thing. 

It is easy to maintain as well, simply change the filters when it reaches its end of life and you get a working water filter again. For performance, gravity water filters work great at producing clean water. Since there are no external forces aside from gravity, the water spends a considerable amount of time passing through the filter, thus eliminating tremendous amounts of bacteria, viruses and other contaminants. 

Lastly is portability and customization. Unlike a whole house water filter where it is installed permanently to a water pipe, gravity water filters do not. You can simply bring it anywhere whether on a camping trip or moving to another home. 

In terms of customization, there are lots of types of gravity water filters for you to choose from depending on your needs. You can choose from a small portable one for outdoor or a large capacity indoor countertop gravity water filter.

FAQ for Gravity Water Filter

Are there any disadvantages of using a gravity water filter?

Gravity water filters do not have any major disadvantages compared to others. However, they do have a limit when it comes to how much you can filter at one time. This can be due to its limited water tank size.

Are gravity water filters as effective as other filtration methods?

Maybe. Most gravity water filters can achieve the same water quality results as other types of water filters on the market. However, this depends on the filtration cartridge and the amount of contaminants your untreated water contains. In other words, it varies depending on the use case.


That’ll wrap up our product reviews and additional details for our best gravity water filters. Now in terms of the top pick, well the big berkey is no doubt a great water filter so make sure to consider that. 

All in all, hopefully this article will help you out in choosing the right one for you and your family needs. Gravity water filters are versatile and simply work right away when you need it.

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