Search  for anything...
Waterdrop

Waterdrop Alkaline Water Filter, Replacement for Berkey® BB9-2® Black Filters and Berkey® Gravity Water Filter System, Up to PH 9.2 (Pack of 2)

    • Based on 1,262 reviews
Condition: New
Checking for product changes
$69.99 Why this price?

Buy Now, Pay Later

As low as $11.67 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Apr 28
Order within 2 hours and 43 minutes
Available payment plans shown during checkout

Recently Viewed

Style: System Replacement


Features

  • Enjoy Healthy, Alkaline Water: This filter is meticulously designed to increase the pH of your tap water, promoting your physical health, accelerating detoxification and boosting bone and digestive health.
  • Extended Lifespan: The Black Carbon Filters Replacement for Berkey can provide up to 6,000 gallons of pure water, which proves to be a budget-friendly option. This helps save 45,000 plastic bottles, which can greatly reduce plastic pollution to the environment.
  • Efficient Filtration: The alkaline black carbon filters have powerful filtraiton performance and can reduce 99% of chlorine, lead, PFOA, PFOS, taste and odor, large particles, sediment and more, delivering you clean, pure and great-tasting water.
  • Smart Spending, Big Saving: This alkaline filter is a cost-effective choice. It costs only 1 cent for every gallon of water, which is about 8 bottles of 16.9 oz water.
  • Compatible models: The filter can be replacement for Berkey BB9-2 black filters, Travel, Big, Royal, Imperial, Light, Crown Berkey Series. And it is also compatible with Waterdrop Gravity-fed Water Filter System. *The water filter is not sourced by or sponsored by Berkey. Waterdrop is an independent brand. *Please flush filter for 1 min before use by connecting to the faucet. Note: If faucet is not fully compatible, splashing may occur but won't affect product.

Material: Alkaline material


Product Dimensions: 2.9"D x 5.7"W x 6.4"H


Product Benefits: Promotes physical health through increased pH, accelerates detoxification, boosts bone and digestive health, reduces chlorine, lead, PFOA, PFOS, taste and odor, large particles, sediment and more, delivers clean, pure and great-tasting water, cost-effective with a long lifespan, and reduces plastic pollution. See more


Brand: Waterdrop


Unit Count: 2.0 Count


Material: ‎Alkaline material


Product Dimensions: ‎2.9"D x 5.7"W x 6.4"H


Product Benefits: ‎Promotes physical health through increased pH, accelerates detoxification, boosts bone and digestive health, reduces chlorine, lead, PFOA, PFOS, taste and odor, large particles, sediment and more, delivers clean, pure and great-tasting water, cost-effective with a long lifespan, and reduces plastic pollution.


Brand: ‎Waterdrop


Unit Count: ‎2.0 Count


Number of Items: ‎2


Manufacturer: ‎Waterdrop


Part Number: ‎WD-W90D-2


Item Weight: ‎1.4 pounds


Item model number: ‎WD-W90D-2


Style: ‎System Replacement


Power Source: ‎Gravity-fed


Item Package Quantity: ‎2


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: December 27, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Apr 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Super product: Waterdrop 2.25G Gravity-fed Water Filter System, with Sight Glass Spigot
Style: Basic Syetem
I recently purchased the Waterdrop 2.25G Gravity-fed Water Filter System, and I am very happy with it. I was pleasantly surprised that it was easy to assemble, even for my 80-year-old mother. The 2.25-gallon container is just the right size for an average two-person household. The filter system removes all weird tastes and odors, and it filters water very quickly. The spigot on the tank is well-designed and helps you determine the water level, which reduces water spillage from overfilling the tank. This system works as described and arrived on time. I would say that it is a good investment that is well worth the money. In addition to providing clean, great-tasting water, it also helps reduce landfill waste and global warming. ... show more
Reviewed in the United States on October 12, 2024 by Rick
    • Works perfectly
Style: Fluoride System
Can’t say enough good things about this filter system. Easy to put together and easy to use. Water tastes great and I’ll probably get over a year on the filters before needing to replace them.
Reviewed in the United States on April 1, 2025 by Steve F
    • Higher quality stainless steel container than my Berkey
Style: Basic Syetem
We bought our 2.25 gallon (Big Berkey) system 10 years ago and we have loved it. However, I always knew that, should we be in an emergency situation, I would need more water filter capacity than what we have. This year, I decided it was time to increase that capacity. Yet, the cost of the Berkeys has more than doubled since our initial purchase. I took a look at Waterdrop, read their reviews and decided to go forward. I do wish that I could have purchased the 3. 25 gallon size, but they don't offer that. To my surprise, the stainless steel container is nicer quality and it is even prettier! The sight view water spigot is also better because of the little red dot that helps you see the water line with more ease We did not order the one with 4 holes (for the flouride filters) because there has been a pledge that flouride will be removed from our drinking water in the new year. After the 2nd flush of water running through the system, the filters worked great although I have not done the red dye test on them yet. I can always revert back to using the VERY overpriced Berkey filters if I am not pleased with the Waterdrop ones. I am just grateful that I have an alternative that isn't so pricey. I am VERY PLEASED with this product. ... show more
Reviewed in the United States on November 28, 2024 by Madison Grace
    • Great deal for the money
Style: Fluoride System
Review Image by Cynthia Cynthia
Great Over all . Make sure to rinse your filters for at least 3 minutes. I didn’t so I had to dump about 5 gallons of filtered water. But for the money it’s great. Make sure to get some red dye so you can check for leaks. The nozzle that fits over the kitchen sink faucet is super handy. Have to purchase separately. ... show more
Reviewed in the United States on March 11, 2025 by Cynthia Cynthia
    • Doulton filters made the water taste metallic, total waste of money, undrinkable water. Scary!
I bought these filters based on all of the 4/5 star reviews which I find stunning. I can only surmise that people are checking the “5-star” for ease of installing” because they ARE easy to install. You just place it in hole and screw it on just like the Berkey’s.. It’s not rocket science. Maybe that’s bringing the overall rating up? BUT These filters don’t even come close to the Berkey filters. After priming them (just like Berkeys) and filling my Berkey with hose water 5- TIMES through the system the water had a pure sickening metallic taste that took all night to go away. The scariest part is the water from the hose tasted perfectly fine with no after taste of any kind which means these filters are created the disgusting metal taste. All 6- people on our trip said the same thing! Like everyone else (guessing here) I bought these filters because the Berkey replacements are stupid expensive. I cannot express how bad the Doulton water tastes, the time it takes for the metallic to leave your mouth and in our group 3- upset stomachs through the night. We use this on our boat and did not bring bottled water with us. We actually had to pull anchor and go into a marina to buy water. Extremely upsetting and scary putting “God knows what” into our bodies. Who really knows what’s inside of them since they don’t go into detail. Since I’m past the 30-day return time I’m stuck with them. I’ll start saving up for the Berkey filters and use bottled water until I can buy the real ones again. In 15- years this is the worst “knockoff” product I’ve ever bought. Lesson learned. We have the Berkey King and use 4- of the black filters.. with no fluoride filters. With the Berkey King and 4- Berkey filters the water tastes delicious, which is an odd thing to say as it has no taste at all. Those who use Berkey will understand... Save up for the Berkey! ... show more
Reviewed in the United States on November 18, 2020 by ‘Liv
    • Great tasting water
Style: Upgraded System
We really enjoy this water filter system. It has taken our very rusty water and made it taste great. We tried filtering soft water through it and there was still a hint of softness, but much better. The filter system itself functions as it should. No leaking unless overfilled and the assembly was very easy. ... show more
Reviewed in the United States on August 24, 2024 by Kaylie
    • Well made
Style: Fluoride System
Recieved the system on time and in good condition. Flushing the filters was not a big deal, and putting it together was easy. One of the carbon filter tips did break off in the fluoride filter, but customer service was amazing! Krystal with customer service was very responsive and quickly set up a delivery of replacement filters! Customer service was exceptional! I would recommend this product. ... show more
Reviewed in the United States on December 6, 2024 by angela near
    • Love It.
Style: Fluoride System
Love this and the water is very good after it's filtered.
Reviewed in the United States on March 30, 2025 by Donna Johnson

Can't find a product?

Find it on Amazon first, then paste the link below.