★★★★★
Countertop water cooler filter
Denise Danielle—February 23, 2026✓ Verified purchase
It’s perfect. The right size size for my water cooler Thanks a bunch 💜 Read more
Waterdrop
Waterdrop WD-K19RF Filter Replacement for WD-K19-S and WD-K19-H Countertop Reverse Osmosis System 12-month Lifetime
$68.99
About this item
- The K19RF replacement filter is compatible with Waterdrop 𝐖𝐃-𝐊𝟏𝟗-𝐒, 𝐖𝐃-𝐊𝟏𝟗-𝐇 countertop reverse osmosis system.
- [Superior Filtration Performance] The innovative RO membrane is designed to reduce TDS, chromium, PFAS, fluoride, arsenic salt, iron, radium nitrate, calcium, particles, chloride, chlorine and heavy metals.
- [0.0001μm Pore Size] The superior RO membrane of the filter can intercept any impurities larger than 0.0001 micron. This means that it can trap most harmful substances in tap water.
- [Longer Service Life] Waterdrop adopts an advanced water filtration technology to extend the filter's lifespan. The filter can last at least 12 months. Spend only $0.2 a day and enjoy pure and fresh-tasting water anytime.
- [Easy Replacement] The 3-second filter replacement process requires no tools and any professional skills.
$68.99
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Product details
| Material | PP Cotton & Carbon Fiber & Reverse Osmosis Membrane |
|---|---|
| Product Dimensions | 6"D x 6"W x 14"H |
| Item Weight | 1.8 Pounds |
| External Testing Certification | WQA |
| Product Benefits | Removes Fluoride |
Technical specifications
| material | PP Cotton & Carbon Fiber & Reverse Osmosis Membrane |
|---|---|
| product_dimensions | 6"D x 6"W x 14"H |
| item_weight | 1.76 pounds |
| external_testing_certification | WQA |
| product_benefits | Removes Fluoride |
| brand | Waterdrop |
| unit_count | 299.0 Count |
| compatible_water_purifier_models | Waterdrop WD-K19-H, Waterdrop WD-K19-S |
| number_of_items | 1 |
| manufacturer | Waterdrop |
| item_model_number | WD-K19RF |
| best_sellers_rank | #33,846 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #257 in Replacement Under-Sink Water Filters |
| date_first_available | April 23, 2021 |
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Customer reviews
4.5144 ratings
Customers say
Customers find the water filter to be of good quality and lasting a long time.
★★★★★
Excellent product
Jeannie Fitzgerald—July 24, 2024✓ Verified purchase
I bought this as my backup for my filtration system. I have used the system for over a year now and the first filter actually lasted 10 months. I was thrilled as the information had said it should last about a year. The water here is well water and has a high concentration of calcium. The Waterdrop system and filters have consistently filtered water with TDS at 100+ to TDS at 30-40 during that 10 months of daily usage. I admit to using the system to provide drinking water and water for tea and coffee only. I highly recommend the system and filters. Read more
★★★★★
Amazon for the win
Pura Vida Finds—March 1, 2026✓ Verified purchase
Waterdrop websites filters were sold out but good Ole Amazon delivered just in time. These filters last a really long time. Read more
★★★★★
Effective and Keeps Water Fresh
John—August 9, 2025✓ Verified purchase
This water filter really works. When replacing the old cartridge, I can see it’s done its job—catching all the algae. With the new filter, the water tastes noticeably fresher. I’ll definitely keep purchasing this product regularly. Read more
★★★★★
Good quality product and services from Waterdrop
ViTiger—October 31, 2025✓ Verified purchase
Waterdrop brand makes good products with guarantees. I have been using this filter for 2nd year now, all is good! Save me a lot of money on water. Save your money on bottled water, water filter and keep our planet cleaner Read more
★☆☆☆☆
Misleading Claim — Filter Only Lasted Half the Time
Xuanyu Zhu—November 16, 2025✓ Verified purchase
I purchased this water filter in June because the product page says it is the same as the original filter and can last up to one year. However, it has only been less than six months, and the water has already started to taste strange—almost the same as unfiltered tap water. Clearly, the filter is no longer working properly. This is very disappointing and feels misleading based on the product description. I would like a refund or a replacement, as the filter definitely did not last as long as advertised. Read more
★★★★★
after-sales services
Yulun Chiu—December 23, 2025✓ Verified purchase
I would highly recommend that Kimberly is very professional on after-sale service. She was trying to help me to resolve my water leak issue on my countertop water filter (K19). She has provided the best solution in a timely manner. I believe her professional comes from consistently delivering on promises, showing honesty, and proving competence, making customers confident in the product's quality and the company's integrity, leading to loyalty and preference over competitors. I am not sure if the Waterdrop filter company ranks the largest company in the market but I am sure their customer service ranks the top ONE in the world. Read more
★★★★★
As Advertised.
Customer—February 13, 2026✓ Verified purchase
As Advertised. Read more
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