Waterdrop 2.25-gallon King Tank Gravity Water Filter System, With Stand Waterdrop 2.25-gallon King Tank Gravity Water Filter System, With Stand
Waterdrop 2.25-gallon King Tank Gravity Water Filter System, With Stand
Waterdrop 2.25-gallon King Tank Gravity Water Filter System, With Stand
Waterdrop 2.25-gallon King Tank Gravity Water Filter System, With Stand
Waterdrop 2.25-gallon King Tank Gravity Water Filter System, With Stand

Waterdrop 2.25-gallon King Tank Gravity Water Filter System, With Stand

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Sale price $249.00 Regular price
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  • Key Feature
    • Updated Filtration Material: Compared with others, the Waterdrop King Tank fluoride water filters use activated carbon and resin, which can reduce the fluoride and obviously improve the taste while ensuring water safety.
    • Accessory Upgrade: This product provides you with a free liquid level faucet, which can check the remaining water at a glance. You don't have to worry about the lack of water anymore.
    • Large Capacity: Waterdrop King Tank gravity-fed water purification system is equipped with a 2.25-gallon large capacity. This meets the water needs of a large family, ensuring you get pure water indoors or outdoors.
    • Rugged and Durable Material: Made of 304 food-grade stainless steel, King Tank is wear- and corrosion-resistant. It can withstand a weight of up to 220 pounds and accompany you for a long time.
    • Multi-Scene Applications: The King Tank can be easily installed and used without electricity. When having RV traveling, camping, or at home, you can rest assured of clean, filtered water.
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Shipping policy

Shipping rates and delivery estimates

Shipping Method

Estimated Delivery Time


Economy Shipping

4-10 Business Days


Standard Shipping

3-6 Business Days

$5.99(Free on order over $200)

Express Shipping

2-5 Business Days


* Shipping charges for your order will be calculated and displayed at checkout.

* The Delivery Time is calculated based on the shipping date, not the order date. The actual shipping date can be delayed due to invalid shipping address, weekends/holidays, etc.

Handling Time:

We need 24h to 48h to prepare your order, most of the packages will be shipped out within 24 hours except weekends and holidays.

Track your order

Once your order is shipped, you will receive an email from us containing the tracking information. Tracking information is also available in your "Order Details" page.

Shipping areas

The products can be delivered to the most of states in United States except American Samoa, Micronesia, Guam, Marshall Islands, Northern Mariana Islands, Palau, Puerto Rico and U.S. Virgin Islands.

International shipping

We are sorry that the international shipping service is not supported for the time being.

Shipping Carriers

We work with 4 carriers to make sure your order will arrive on time: UPS, USPS, FedEx and Amazon Logistics US.

Delivery Time Exceeded

Shipping might experience delay due to covid-19. If your order is delayed, please contact us via email service@waterdropfilter.com, we will check the situation with the transportation company in time. Thanks for your understanding and support.

Note: We don't accept requests to specify a certain carrier to deliver the package.

Shipping origin

The package will be shipped from one of our US warehouses closest to your location.

* If you have any questions, you can contact our customer via LiveChat or email to service@waterdropfilter.com, we will reply to you as soon as possible!

Sales Tax

The sales tax will be collected in accordance with U.S. tax laws. Customers whose delivery address within the following states will be charged a certain tax at checkout, and the tax rate is determined by the local government. (AZ, CA, CO, FL, GA, IL, IN, KY, MA, MD, MI, MN, NC, NJ, NV, NY, OH, PA, TX, UT, VA, WA, WI) All taxes collected will be reported and filed to the IRS on time.

30-Day Return ×
No Worries Guarantee

Thank you for shopping at Waterdrop. We appreciate your decision to purchase our products and aim to ensure a rewarding experience throughout your exploration, evaluation, and purchase process.

Order Cancellations:

If you wish to cancel an order, please contact our customer service team.

1. If you contact us within 24 hours of purchase:

Since most orders ship the same day, kindly email us at contact service@waterdropfilter.com or call us at (888)-352-3558 within 24 hours of placing the order. There will be no cancellation fees for standard items canceled before shipment. If the package has already been shipped, we will provide a prepaid label for return, and once we receive the package from you, we will issue a refund.

2. If you contact us after 24 hours of purchase:

  • In such cases, you will need to bear the shipping fee if the package is already shipped (subject to our system status, not the order status).
  • The product must be damage-free, packed in the original packaging we sent to you, and returned with the original receipt of purchase.
  • We will process your refund after receiving the package.

30-day Risk-free Return Policy:

  • You are eligible to return any item* within 30 days of receipt.
  • All returned items must be disassembled and repackaged as they were originally received.
  • The 30-day risk-free return policy applies to all item*.
  • No restocking fee will be charged, but customers are responsible for the return shipping cost. We will cover the return postage expenses in the case of any return requests related to a quality issue.
  • Please note that the 30-day risk-free return policy is only valid for orders* within the continental United States.

Return after 30 Days of Receipt:

  • You may still return any item after 30 days of receipt.
  • In this case, customers are responsible for the return shipping cost. The total cost of shipping will be deducted from your refund.
  • All returned items must be disassembled and repackaged as they were originally received.
  • A 10% restocking fee will be applied to all returned products. However, in the event of any return requests related to a quality issue, we offer free returns or replacement with a new product.

1-year Warranty:

Enjoy peace of mind and confidence in your purchase with our 1-year warranty, backed by lifetime technical support.

If you receive a damaged item and wish to file a claim, please email service@waterdropfilter.com with your order information and a picture of the damaged or incorrect product. We are eager to assist you.

For products that become defective during the warranty period due to a quality issue, rather than your own breakage or misuse, we can accept a free return, provide free repair service, or issue a new replacement.

Exchange Policy:

1. Defective Products:

If you receive a product with quality issues or damages, please contact our customer service team within 30 days of receipt. We will provide you with a free exchange service. Please provide order information and photos of the damaged product when contacting our customer service team for better assistance.

2. Non-Quality Issues:

If you wish to exchange a product for non-quality-related reasons, please note the following:

  • The product must be within 30 days of purchase and unused.
  • The product must be returned in its original packaging, along with the original purchase receipt.
  • You will be responsible for the re-shipping costs.
  • Please note that the exchange policy is only applicable to orders made on the official waterdropfilter.com.

How to Return a Product?

If you would like to return a product, please follow these guidelines:

Step 1: Contact our customer service team before returning a product. We will respond with return instructions within 24 hours.

How to contact us:

Email: service@waterdropfilter.com

Toll-free Tel: (888)-352-3558

Step 2: Prepare the package after receiving confirmation from the customer service team, and please note the following requirements:

  • Include the order number in the package. You can print out the order detail page or leave a note inside the package.
  • Ensure the package contains the original receipt of purchase.
  • Return the product in the original packaging we provided.
  • The product must be damage-free (this does not apply to defective products, as damage will void the refund).

Step 3: Contact our customer service and provide your return tracking number. We will track the package and process your refund within 5 working days after receiving and inspecting the package.

General Information for All Returns:

1. Defective Products:

If you receive a product with quality issues or damages, please contact our customer service team. we provide free returns, replacement with a new product, and comprehensive technical support.

2. Non-Quality Issues:

  • You are responsible for shipping the products to the return address provided.
  • Returned items will undergo inspection before issuing a refund.
  • Refunds will be processed within 5 working days after the item has been inspected, and it may take 4-7 days to be reflected in your credit card statement.
  • We highly recommend using a traceable and insurable shipping method for your return. We are not responsible for returns lost or damaged in transit, and you will need to file a shipping claim.
  • Please note that orders made via 3rd-party sellers, including Amazon, are not eligible for our return policy.
  • All returned items must be disassembled and repackaged as they were originally received. Items returned in a condition other than "like new" will be subject to a 10% restocking fee to cover repairs or part replacement. The restocking fee will be deducted from your refund.

Return Address:

Ecolife Technologies, Inc.

1951 S Lynx Pl,

Ontario, CA 91761

United States

Tel: 888-352-3558

Price Match Policy:

At Waterdrop, we highly value our customers' shopping experience. That's why we offer a 30-day price match guarantee. If you happen to notice a price reduction on the item you purchased at waterdropfilter.com within 30 days of your purchase, you are eligible to claim a price-match refund. To request a refund, please contact us at service@waterdropfilter.com. We are here to assist you promptly.

Note: This Waterdrop price-change refund policy only applies to items shipped and sold by waterdropfilter.com. If you're buying from a different vendor, you'll need to contact that seller if the price drops.

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Model Number
Carbon Filter Capacity
Up to 6,000 gallons/pair
Fluoride Filter Capacity
Up to 1,000 gallons/pair
Operating Temperature
40-100°F (4-37°C)
System Capacity
2.25 gallons
Why is the Waterdrop King Tank Gravity Water Filter right for you?
There are several reasons to choose the Waterdrop King Tank water filter system. First, it comes with an advanced metal water level spigot, a standard accessory product you hardly get in other competing products. You can clearly and correctly monitor the water level viewing the position of the red floating ball. The metallic spigot coupled with the metal housing prevents water leakage. The use of plastic spigots, as seen in Berkey and other computing products, puts the system at the risk of water leakage and eventual damage.
Another important reason to buy this gravity-fed water purification system is the in-depth drawing technique adopted in the manufacturing process. What you get is a naturally-looking filter system with an integrated design with zero joints and resistance against rust. The safety of your drinking water is guaranteed.
Lastly, this countertop water filter offers you clean water economically and with maximum convenience. That is why we offer different configuration combinations in our products to meet your individual filtration needs efficiently. Now you can live a healthy life without breaking the bank.
As essential tools for emergency preparedness, you never miss out on safe, pure, and healthy drinking water.

Does the water filter leak where the upper and lower chambers fit together?

When the lower chamber is full and there is water in the upper chamber, water might leak from where the two chambers together. To prevent overflow, it is recommended to empty the lower chamber completely prior to refilling the upper chamber.

What substances does the water filter system reduce?

The filter media adopted in the King Tank portable water filter is natural coconut activated carbon, which effectively reduces chlorine and improves taste. You can get up to 98.95% of chlorine reduction. The filter can effectively reduce heavy metals, sediment, rust, soil, and other impurities while improving the odor and taste. However, if there is a need for TDS reduction, feel free to check Waterdrop RO water purifiers.

Can water filter remove the peculiar smell of water?

Yes. The filter media adopted in the King Tank stainless steel water filter is natural coconut activated carbon, which effectively reduces chlorine and improves taste.

How often to replace the water filter?

The two carbon filters can effectively filter up to 6,000 gallons of water. You need to replace the filter once it achieves the maximum filter capacity. The actual replacement time might vary according to the local water quality.

How do I know the level of water filtration?

The complimentary metallic water level spigot would be a great solution. It allows you to determine how much purified water remains without removing the lid or remove the upper chamber to see the remaining water in the lower chamber. You can assess the water level accurately with the red floating ball in the sight glass spigot.

Which scenarios does this gravity water filter apply to?

This gravity-fed water purification system can be placed in multiple scenarios ensuring you get pure water indoors or outdoors including RV, backyard and comping. It’s the essential tool for emergency preparedness.

What is the model number of the replacement water filters, and where can I find them?

For the white fluoride filter, the model number is PF-2-C, while for the black carbon filter, the filter number is BB9-2. You can find them by searching for the model numbers.

Is there any reason I have a slow initial flow rate?

This may be due to the wrong installation of the carbon filter. You can check this by removing the filters from the system and submerging them into a tall container containing clean water, such as the lower chamber of your filtration system. The filters either sink or float. Floating means the micropores contain trapped air, while sinking signifies complete saturation. Transfer the filter cartridges into clean water and allow them to sink to the bottom before reinstalling them into the system. If you continue to experience a slow flow rate after this, reach out to our Customer Service.

Is the King Tank stainless steel water filter complicated to install?

King Tank water filter system can be easily set up and install all by yourself without prior plumbing experience. The water filter system requires no electricity to work. All you have to do is install and enjoy clean and pure drinking water at all times, even when there is a flood or snowstorm.

Why is there water in the upper chamber after filtration?

Having one or two inches of water in the upper chamber post-filtration is expected. Since you have gravity filters, the water level in the upper chamber drops and leads to a slower filtering process. This is normal, considering there is less water pressure available to push water through the filter elements.

The TDS levels did not drop after filtration. Is this normal?

This system is not designed to primarily reduce TDS, which is the total amount of mobile charged ions in water. TDS include metals, salts, and minerals, all dissolved in a specific volume of water. Being a gravity-fed water filter system, the filtration process does not eliminate the beneficial materials. It only reduces the harmful materials. You can get a Waterdrop RO water filtration system if you want a filter system that does both.
King Tank Gravity-Fed Water Filter Ultra Grandly Launched With Complete Set
• Precisely crafted through 18 processes
• 0.8mm thickened stainless steel
• Standard metal liquid level spigot
• Accessory gift worth over $100
Monitor Water-Level In Real Time With Visual Spigot
The red floating ball floats with the water level allowing you to monitor the water level in real time. Reminds you to add water in time, without zero risk of overflowing.
Unlike competing plastic spigots, the spigot in our gravity water filter is made of pure copper, ensuring durability and zero leakages. The adoption of only lead-free materials makes every drop safe and relieving.
Flat Surface Treatment Ensures No Leakages
The connection port of the spigot is treated with a flat surface, eliminating the water leakage problems of a curved interface. This improved design makes details in this gravity filter system more visible and user experience better.
One-Piece Stainless Steel Precision Casting Process
Our King Tank gravity water filtration system is built to be sturdy and corrosion-resistant, thanks to the thickened stainless steel and an integrated stretching process. You will find no streams, which often harbors dirt and rust, in addition to causing water leakage.
4-Stage High-Efficiency Filtration, Ideal For a Variety Of Outdoor Uses
The filter material in this countertop gravity water filter is the natural coconut activated carbon, ensuring a better post-filtration taste, an initial 98% fluorine reduction rate, and a 98.95% residual chlorine reduction rate. It effectively reduces bad taste and odor, rust, sediment, heavy metals, spore cysts, and other harmful substances.
Ultra-Long Lifespan, Zero Consumption, Improved Sustainability
The filter life of this Gravity-Fed Water Filter is up to 6000 gallons/pair, and 1000 gallons/pair for the defluorination filter. This is same as 53,000 bottles of water. Now you have a safer and more economical source of drinking water.
Complete Set with Accessories, Easily Save $100+
Spend less and enjoy cleaner and safer water with the King Tank gravity filter system. The standard package contains all you need to setup the system, including metal liquid level faucets to help you observe the water level in real time. There is also a non-slip base for additional sturdiness and convenience. You save up to $100 on these accessories.
Easy To Carry With Sleeve Design
Space-saving and sturdy design; easy to carry around.
Product size (inch): 12.5*8.5*20.4
Dimensions after the sleeve:
Stand size (inch): 8.5*5.9
Stable Flow Rate With Invisible Dustproof Holes On Lid
The invisible dustproof hole on the lid prevent dust from entering the tank, and balances the internal pressure of this gravity water purifier to keep the lid unlocked and the flow rate stable. This design makes every detail more visible and appealing.
Non-Slip Stand, Easier To Take Water
The system is sturdier with the non-slip sand, ensuring no chance of slipping when taking water. The four corners are also equipped with non-slip silicone grips. The sturdy design means the stand can hold up to 220 pounds without deforming or breaking.
Multi-Usage Scenarios
The King Tank gravity fed water filter system is designed to meet your fresh water needs no matter where you are – indoor at home, dormitory, and RVs, or outdoor while traveling, camping, fishing.
Comprehensive Accessories Set
  • Lid*1
  • Upper chamber*1
  • Lower chamber*1
  • Carbon filter*2
  • Fluoride filter*2(Optional)
  • Wrench*1
  • Water level spigot*1
  • Non-slip stand*1