Because there are several water filtration systems in the marketplace, it isn't easy to choose one. You have to sieve through several options before choosing the best fit. Consequently, this article compares the Waterdrop King Tank with its competition, helping you see side by side results to make a more informed decision when choosing the best gravity water filter for your home.
Additionally, we discuss gravity fed water filter systems in detail.

What Are Gravity Water Filters

A gravity water filter is a machine that uses gravity to filter polluted or contaminated water.
This machine has two chambers – upper and lower. To use this system, you'll pour the contaminated water in the upper chamber while the lower chamber is the finish line for collecting the now filtered water.
The gravity water filter is ideal in emergencies where there is no safe water. Also, if you live in an area with water supply problems or insufficient quality tap water, then the gravity water filter is for you. Another perk of a gravity water filter is they don't need electricity before working – gravity is enough.

How Does Gravity Water Filters Work

The gravity filter has two primary chambers, with one sitting on another. Through a microporous element, the upper chamber filters contaminated water. The filter has microscopic pores for disabling contaminants and other pollutants. Consequently, only water passes through, ready and safe to drink.

What Should You Consider Before Choosing A Gravity Water Filter

Comparing the critical factors is ideal before choosing a gravity fed water filter out of the several available ones. Removed contaminants, filtration capability, filter performance, flow rate, and chamber material are the most significant factors to consider. This section discusses 5 things you should consider before choosing a gravity water filter.

Removed Contaminants

Although most gravity water filters can remove chlorine, some remove more than chlorine. In addition to chlorine, these filters remove heavy metals, fluoride, bacteria, and chemicals like herbicides and pesticides. Also, some filters soften water, replenishing it with healthy minerals. Check here to know more about water contaminants.

Filtration Capability

An essential feature of a water filter is the water quality it produces. It is pretty pointless to buy a water filter that is not capable of filtering water from wild resources. Therefore, before investing in a water filter system, ensure that it generates healthy and safe drinking water.

Filter Performance

The filter is another significant factor in gravity water filters. The criteria for a filter that guarantees safe drinking water is its ability to remove cysts, bacteria, and protozoa to the barest minimum.
Safe drinking water is one with no biological threats present. However, depending on where you live and your water conditions, your water filter should be able to filter out more than biological threats.

Flow Rate

There is no pressure from a pipeline system pushing water in a gravity fed water filter. Consequently, a gravity filter has a slower velocity compared to other types of water filters. During filtration, the system takes more time. Although it depends on the number of filters present in the water purification system, a gravity water filter generally filters between four and seven gallons of water in 7 hours.

Chamber Material

A common material for countertop water filters is food-grade 304 stainless steel. The material keeps water fresh for long periods and also prevents rust.
Plastic and silicone are also common materials for making hanging gravity water filters. Before purchasing a water filter, ensure that the material is food grade or BPA free from plastic. Fortunately, the majority of hanging water filters fit this criterion.

What Are The Different Types Of Waterdrop Gravity Water Filters

As a pretty vital member of Waterdrop water filters, gravity water filters also have different categories. Each gravity filter has its own advantages and working conditions.
countertop gravity water filter pitchers PT-05
Different from Waterdrop King Tank which is suitable for a big family or for outdoors like camping and RV, Waterdrop countertop water filter pitcher can be applied to space-limited apartments. The small and lightweight pitcher is more friendly to women and children.
Check to learn more about Waterdrop pitchers.

Comparing The Waterdrop King Tank and The Alexapure Water Filters

Choosing the best water filter system for your home can be challenging, especially with the several options on the market. Also, considering that both the Waterdrop King Tank and Alexapure water filters are gravity fed filters with similar exteriors, choosing one of the two can be even more challenging.
Therefore, the following section compares both filters, emphasizing their similarities and differences.

Waterdrop King Tank Vs. Alexapure

Waterdrop gravity water filter King Tank
Alexapure water filter
  • Capacity: 2.25 gallons
  • Material: 304 food-grade stainless steel
  • Carbon Filter Lifespan: 6,000 gallons
  • Price Starts at: $249 (including accessories)
  • Spigot: water level sight spigot
  • Capacity: 2.25 gallons
  • Material: stainless steel construction
  • Carbon Filter Lifespan: 5,000 gallons
  • Price Starts at: $279.95
  • Spigot: not water level sight spigot

Filtration Performance

Performance-wise the Waterdrop King Tank is superior.
Because the King Tank gravity-fed water has a high-level filtration performance, it efficiently reduces about 98% fluoride. The filter also reduces heavy metals, rust, sediment, sand, soil, foul taste, odor, and other water contaminants.
premium materials of Waterdrop King Tank white filter
Although the system comes with a black filter, you can purchase an extra white filter, which combines food-grade fluoride reducer, resin, and granular activated carbon with BPA-free housing to ensure safety and constant, pure water for your household. Different from those Aluminum Oxide media filters, a Waterdrop filter could provide you with better-tasted water.
The installation is pretty simple, the only thing you need to do is connect the back filter with the white one. The dual-stage filtration that the black and white filters achieve effectively reduces several water contaminants, ensuring water safety and quality.

Cost Performance

The Alexapure water filter costs more than the Waterdrop King Tank.
Regardless, the lifespan of the carbon filter in the Waterdrop King Tank is 1000 gallons more than that of the Alexapure filter. Therefore, the Waterdrop King Tank Filter lasts about a year longer than the Alexapure filter if they filter 3 liters of water daily.
Furthermore, the Waterdrop King Tank savings add up when you break down the filter's cost over 6000 gallons life expectancy. The Alexapure Pro water filter costs $249.95, and it lasts for 5000 gallons. Therefore, you have to purchase an additional filter for $199.95. The overall cost for this filter then becomes $369.90, and using three gallons of water per day means you're spending 6.1 cents per gallon.

Free Water Level Sight Spigot

You can get this upgrade sight glass spigot for free.
Waterdrop King Tank water level sight spigot
The King Tank water purification system has a metallic water level spigot. The red floating ball in the sight glass spigot helps to tell the water level clearly, allowing you easily monitor the water level in the filter's lower chamber.
Waterdrop King Tank water level sight spigot floating ball
It is made from high-quality metal material, which is more efficient than a plastic spigot in establishing a seamless connection and preventing leakage.

Introducing The Waterdrop King Tank

The Waterdrop King Tank is a popular countertop gravity fed water filter available on the market.
The system removes contaminants from water. Because of its countertop design, the filter does not require installation or connection to a water line. All you have to do is set up the filter on your counter, remove the packaging, and clip the filters in place. You can then add water to the system.
easy installation of Waterdrop King Tank filters
Also, maintaining this filter is easy. Just remove the old filters and clip new ones in place. Another maintenance tip is to rinse out the water from the tank periodically. Below is more about the Waterdrop King Tank details.

Large Capacity

At 2.25 gallons, the Waterdrop King Tank water filter has a large capacity. Therefore, this filter meets the water needs of a large family both indoors and outdoors. Check to lrean more: 3 Best Portable Water Filter for Camping and Hiking.

Accessories Set

The King Tank water filter comes with various accessories, including;
One pc lid
One pc upper chamber
One pc lower chamber
Two pcs carbon filter
Two pcs fluoride filter
One pc wrench
One pc water level spigot
One pc non-slip stand

Food-Grade Stainless Steel

Because users' safety is paramount, the King Tank water filter adopts a deep drawing technique housed by a 304 food-grade stainless-steel material. Additionally, the system is stylish, and it has a design that does not require joints. The system is also rust-proof and rugged.

Long Service Life

Two black carbon filters come as standard parts of the system. These filters offer up to 6000 gallons of service life, saving up to 45,000 plastic bottles of 500ml capacity. Therefore, the King Tank water filter helps you spend less while preserving the environment.


Both the Waterdrop King Tank and Alexapure water filters have similar features, and they are excellent for water filtration in the home.
However, the Waterdrop has more advantages because it is made from food-grade stainless steel material, has a large capacity, water level sight spigot, and has free accessories. Therefore, the Waterdrop King Tank is an excellent choice people cannot resist.
Overall, the King Tank has excellent features, providing you with a unique user experience - this is, after all, one of Waterdrop's strengths.