Waterdrop K19 Instant Hot Water Reverse Osmosis System

Waterdrop K19 Instant Hot Water Reverse Osmosis System

3:1 Pure to Drain Ratio, 5L High-capacity Tank
Regular price £359.99
Sale price £359.99 Regular price
WD-K19(Two-Year Plan | Save More)
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  • Key Feature
    • [Heating and purification 2 in 1]: The K19-H RO instant hot water dispenser not only has RO filtration capability, but also has 4-mode temperature options. The dispenser allows temperature adjustment by 1℉ in the range of 104℉-203℉ to meet multiple water demands.
    • [V-heating technology]: The K19-H can dispense hot water within 1 second. The dispenser produces no limescale by its outstanding filtration capability and also avoids reboiling water by its instant hot design.
    • [Plug and use]: The countertop RO water filter system is installation-free and requires no drilling. All that requires is a socket and you can have pure water anywhere, from the bedroom to your office.
    • [4-stage deep filtration]: The RO instant hot water dispenser can effectively reduce TDS, chromium, pfas, fluoride, arsenic, salt, heavy metals, nitrate, particles, chloride, and other harmful substances.
    • [Water saving and cost saving]: The countertop water filter system K19-H has an impressive 3:1 drain ratio and reduces water consumption with a drain water recycling technology. The filter can last up to 12 months.
    • [Effective elimination of hardness ions]: Reverse Osmosis system uses physical isolation and filtration processes to efficiently remove calcium and magnesium ions from water, thus reducing water hardness. It also eliminates a range of impurities, soluble salts, and organic substances, resulting in drinking water that boasts excellent taste and texture.
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Shipping policy

Shipping rates and delivery estimates

Shipping Method

Estimated Delivery Time


UK Standard Shipping

2-4 Business Days


UK Express Shipping

1-2 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 regions of the UK except military BFPO address (postcode starting with BT, BFPO, BF1, HA46DQ, D18CX65, E41TR26, D24HK7D), Channel Island (GUERNSEY, JERSEY, IRELAND).

International shipping

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

Shipping Carriers

Amazon functions as our logistics partner to ship out Waterdrop products. They will choose the carrier that they think works best for our customers.
Note: We don't accept requests to specify a certain carrier to deliver the package.

Shipping origin

We work with multiple Amazon warehouses in the United Kingdom, will arrange shipments from closest warehouse nearby your address.

* If you have any questions, you can contact our customer contact customer service within 24h for help via LiveChat or email to service@waterdropfilter.com, we will reply to you as soon as possible!

14-Day Return ×
Return & Refund policy

Thanks for shopping at Waterdrop. We appreciate the fact that you like to buy the stuff we build. We also want to make sure you have a rewarding experience while you’re exploring, evaluating, and purchasing our products.

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.

14-day Risk-free Return Policy:

  • You are eligible to return any item* within 14 days of receipt.
  • All returned items must be disassembled and repackaged as they were originally received.
  • The 14-day risk-free return policy applies to all item*.
  • No restocking fee will be charged, but customers are responsible for the return shipping cost.
  • Please note that the 14-day risk-free return policy is only valid for orders* within the continental United Kingdom.

Return after 14 Days of Receipt:

  • You may still return any item after 14 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 for all returned products.

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.co.uk.

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:

  • 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:

Contact our customer service for a return address.

Note: If you are returning a Reverse Osmosis or any other large / high value item (that cost more than £100) you must contact us. Large / Special Items Please note that the following large / high value items must be returned in their original condition or at least in a reasonable / re-sellable condition. The above special items which have been opened will only be refunded if they prove to be faulty, or damaged.

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.co.uk 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.co.uk. If you're buying from a different vendor, you'll need to contact that seller if the price drops.

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Hear it Straight From Our Pros and Users
Summary of The Countertop RO System
Waterdrop K19 countertop Reverse Osmosis system is a compact solution for households looking for clean, filtered water without the need for installation.
WaterDrop K19 Reverse Osmosis System for better water quality. The compact system includes four-stage filtration, UV sterilization, and produces minimal wastewater, making it efficient for off-grid use.
WATEX Exhibition
Waterdrop Distributor Participates WATEX Exhibition in UAE!! Waterdrop RO systems are well received!! We hope more people can enjoy a new water drinking experience with Waterdrop!

4-mode Temperature Options
4-mode Temperature Options
4-mode Temperature Options
4-mode Temperature Options
Better meets your water drinking demands.
V-heating Technology
Instant hot water without waiting.
V-heating Technology
4-stage Deep Filtration
4-stage Deep Filtration
Just rest assured of drinking your water.
Enjoy Minutes in Life
Put it wherever you go. No installation required.
Enjoy Minutes in Life
99.9% UV Sterilization
99.9% UV Sterilization
Incomparable water purification experience.
Smart Display
Smart functions all for you.
Smart Display
5-mode Customizable Water Capacity
5-mode Customizable Water Capacity
Take water as you wish, no worry about spills.
5000ml High-capacity Tank
Higher capacity meets household drinking demands.
5000ml High-capacity Tank
Intelligent Protection
Intelligent Protection
The countertop reverse osmosis system has functions of water shortage reminder, dry burn protection and child lock protection to avoid risks, thereby guaranteeing your water using safety.
3:1 Pure to Drain Ratio
The K19-H has the pure to drain ratio of 3:1. This means that dispensing 3 cups of pure water produces only 1 cup of wastewater.
3:1 Pure to Drain Ratio
3:1 Pure to Drain Ratio


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Add to Cart


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Customer rating
Daily Production Rate 75 GPD 100 GPD 75 GPD
Pure to Drain Rate
Drain ratio stands for the ratio of wastewater and purified water dispensed by a RO system. For example, the 3:1 drain ratio means it uses up a gallon of wastewater for every 3 gallons of pure water you get.

Pure to Drain Rate Pure to Drain Rate Pure to Drain Rate
Display Filter lifespan & Water volume & Water temperature Filter lifespan & TDS & Water volume & Water temperature Filter lifespan & TDS & Water volume & Water temperature
Water Capacity Options 5 5 5
Water Tank Capacity 3.11 KG 5.78 KG 4.81 KG
Electricity Required
Need Installation × × ×
Filter Cartridges WD-C1RF

Filter Lifespan 12 Mths WD-A1-CF: 6 Months
WD-A1-RO: 12 Months
12 Mths
Dimensions (inch) 15.6” *10.9” *17.0” 18.3” *7.8” *17.1” 15.51" * 9.2" * 17.56"
CF filter
Waterdrop K19RF Replacement For K19 Instant Hot RO System
  • Provides you with 12 months or 1,000 gallons of clean filtered water.
  • Replace the water filter in 3 seconds with a single twist. No tools are required.
  • Reduce most contaminants and improves the taste of water.
Total price: £70.00
Total price: £70.00


Does this water filter system only dispense hot water?

The K19-H countertop reverse osmosis system can provide water at room temperature, 45℃, 85℃ or 95℃. Besides, it supports precise temperature adjustment in the range of 40-95℃ to meet all your water demands.

Do I need to drill my countertop to install this product?

The K19-H countertop reverse osmosis water filter system is installation-free and requires no drilling or messy holes. After being filled with water, the system can be directly used by powering on.

Do I need to replace the UV lamp regularly?

Most reverse osmosis systems are designed to reduce most contaminants in water through RO membranes. However, bacteria still breed inside pipelines. Our UV sterilizer can perfectly solve the problem, because up to 99.9% of bacteria can be reduced through UV sterilization. Therefore, the best water filter system should integrate UV sterilization with the RO system to provide the most purified drinking water.

What is the pure to drain ratio of this system?

The pure to drain ratio of this water filter system is 3:1. That is, dispensing 3 cups of water only produces one cup of waste water. When the TDS value of water in the tank is too high, please change water inside timely.

Is this instant hot water dispenser safe to use?

The K19-H countertop reverse osmosis system comes with a child lock and hot water temperature reminder to ensure safety. It is also provided with a dry burn protection system to ensure safety during use.
14.2" *7.9" *15.7"
Feed Water Temperature
41-100 °F/5-38 °C
Daily Production Rate
75 GPD
Feed Water Requirement 
Municipal Tap Water
Dispenser Voltage
Rated Frequency
50 Hz
Feed Water TDS Level
TDS < 500


Customer Reviews

Based on 1 review

One word I can say is Amazing Product 5 stars thank you water drop