Waterdrop

Waterdrop RF15-UF 0 01 Micron Replacement Filter Cartridge For 15UA 15UA-UF 15UB 15UB-UF 15UC 15UC-UF Under Sink Water

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$39.99$47.99

About this item

  • 【Compatible model】Compatible Replacement Filter for Waterdrop 15UA/15UA-UF under sink water filter system, 15UB/15UB-UF under sink water filter system, 15UC/15UC-UF Inline Water Filter for Refrigerator. Compatible with all three methods of connection, this undersink filter brings you purified water from your original faucet, your dedicated faucet, or your refrigerator. Get easy access to clean, safe, and healthy purified water with Waterdrop!
  • 【Ultra-long service life】When used with municipal water, each Undersink Water Filter has a maximum service life of 2 year or 19,000 gallons.[1]
  • 【Solve Clogging Problem】By upgrading the filtration area, our filter now provides a 20X increase in dirt adhesion area, enhancing filtration capability while minimizing the risk of clogging.
  • 【Innovative multistage filtration】 The Under sink Water Filtration system uses innovative multistage filtration. Tested by third party laboratory against NSF/ANSI 42 standard, it can reduce chlorine, taste and odor. And it can effectively reduce heavy metals, chemical pσllutant, sediment and other large particles.[2] Tested by third party laboratory against NSF/ANSI 53 standard, it can reduce lead. Enjoy healthy and pure water straight from your tap – no need to buy bottled water anymore!
  • 【Superior material】 With a filtration accuracy of 0.01 μm, the Ultrafiltration membrane filters out most of baçtёria larger than 0.01 μm. Activated carbon block and other advanced filter media ensure efficient and safe filtration. Specially selected premium materials are lead-free. The BPA-free, lead-free material ensures more reliable use from the inside out. The activated carbon is made from natural coconut shells. Please confirm whether you are allergic to it.
  • 【Quick replacement】The twist-and-lock design of the undersink filter ensures that you can replace it in 3 seconds without any tools, saving you time and effort.
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Product details

BrandWaterdrop
Special FeatureReplacement Filter for Waterdrop 15UA, 15UB, 15UC, 15UA-UF, 15UB-UF, 15UC-UF, 2 Years or 16000 Gallons, 0.01 μm filtration accuracy See more
MaterialCarbon Fiber
Capacity16000 Gallons
Item Weight1.94 Pounds
ManufacturerWaterdrop

Technical specifications

product_dimensions3.6 x 4.17 x 15.59 inches
item_weight1.94 pounds
manufacturerWaterdrop
item_model_numberRF15 UF
best_sellers_rank#6,656 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #51 in Replacement Under-Sink Water Filters
date_first_availableMarch 4, 2020

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Customer reviews

4.51,359 ratings

Customers say

Customers find the water filter works well and appreciate its taste, particularly noting how it removes chemical taste from town water.

★★★★★

A Crystal Clear Difference and Stellar Customer Support!

Sylvia G.July 19, 2025

I recently purchased the Waterdrop RF15-UF replacement filter for my under-sink system, and I am absolutely blown away. If you're on the fence, don't hesitate. This is the one you want. First, the water quality. The difference was immediate and remarkable. Our tap water always had a faint chlorine smell and a slightly "off" taste. Within an hour of installing this filter, the water coming from our tap was crisp, clean, and completely odorless. It tastes like premium bottled water, but without the plastic waste and expense. Now, I want to give a special shout-out to the Waterdrop customer service team. I had a minor issue with the product and decided to call their support line. Karina was great, and made sure I got what I needed it. It's rare to find a company that backs a great product with such a professional and genuinely helpful support team. Bottom line: This filter is a top-tier product that delivers on its promises, and the company's commitment to customer satisfaction is second to none. Thank you, Waterdrop, and a special thanks to Karina for making my day! Read more

★★★★★

Worth the money.

E. MalipatNovember 24, 2025

It really works well. It filters our water really good. I used to spend a lot of money on water filters. This water filter made it affordable for me. It’s also so easy to install. It can be done in a couple of minutes. The filtration system’s longevity depends on how often you use it. My family use it most of the time from drinking supply to cooking, thus the filter lasts for about 1 yr and 5 months before we changed it. You won’t smell any foul odor on your drink. You’ll only kinda smell or taste foul taste when you need to change the filter already. Read more

★★★★★

Excellent product

Harold PoppDecember 30, 2025

This was a replacement for our original filter. It produces excellent drinking water, removing the chemical taste from our town water. Replacement of our original could not have been easier. Read more

★★★★☆

Great filtration, simple to install, & replace

Mia VMarch 20, 2024

My city water sometimes smells like the sink is full of bleach. It also has a lot of rust sediment. My house is more than 70 years old. I expect there are iron pipes in the original plumbing, although my kitchen has been remodeled with whatever pipe material is in use now. A whole house filter isn't feasible, but I like to drink water, coffee, and tea; make pasta, soup, stews, etc. I've used various faucet filters, none of which were easy to install and remove, and lasted less than 3 months . I ended up back to the beginning with Brita pitchers. Not terribly convenient, as it takes extra time to refill them, and the filters need replacing every 2-3 months. A few years ago, I replaced my outdated kitchen faucet with one that has one handle and a pull-out spray, which 1) a faucet filter won't work; but 2 )left me an unused hole in the granite countertop. I added a bar faucet to the cold water line and this Waterdrop filter. (Actually, I hired a plumber.) The RF-15 has a recommended life of 2 years, or 16,500 gallons. I replaced it after 3 years. The water was still clear, didn't grow any mold sitting out in the dog's dish; neither of us got sick drinking it even though I used it 50% longer timewise than advised. But I am the only human living in my house. I pay the water bills. It would take me 20 years to use 16K gallons of water for everything - laundering clothes, and bed linens, showering, mopping, cleaning bathrooms, window cleaning inside and out, toilet flushing (including occasional houseguests guests and dinner guests for a week or two) some pressure washing, and outdoor plant watering. Occasional car washing. My monthly billed water cost is always the minimum,1CCF (748 gallons or less). This filter is only used on one cold water faucet in the kitchen - drinking and cooking, but not dishwashing. My way of excusing the fact that I used it for 3 years instead of the recommended 2. I'm not sick and the original filter was still giving me clean, odorless water. The price has dropped by 50% since I purchased the first one. So why did I take off a star? Because the case is made of heavy plastic. I don't know what the filter is made of, but the company advised me that none of it is recyclable. It goes into the landfill unless I can find some use for it. It's not completely sustainable, but I NEVER buy bottled water, and avoid food containers that are not glass if disposable. Plastic contributes more fossil fuel emissions than anything except diesel and gas-powered engines that are used to create, transport, fill, and transport again. After a heavy rain, I can see islands of them floating down the creek near my house. They are in the stomachs of all of us who eat animals and fish. If you use a string trimmer in your yard, the string is chopped into millions of invisible bits everywhere, ingested by deer, birds and other wildlife. I'll stop ranting now! Thank you for reading. Back to business: This undersink filter works great, is incredibly simple to install and remove, costs almost nothing per gallon for clean water, and makes much less 1000-year waste than other methods of getting clear, good-tasting and smell-less water for drinking and cooking. Read more

★★★★★

using instead of the MFR's filter for the fridge.

exampleJanuary 3, 2024

I have 2 of these inline systems in my home, one in my bathroom connected to my faucet and an inline water flosser on the faucet tap and the other is in the cabinet next to the refrigerator. I don't really "need' this on my bathroom, but it is there and it makes flushing my refrigerator filter MUCH easier. Instead of getting 30 or 40 glasses of water (3G) from the fridge to flush a new filter, I put the new filter in my bathroom and ran the faucet for 10 minutes. Then I put my newly flushed filter into the cabinet for the refrigerator water/ice. I recently purchased a new refrigerator, and the filter made the water taste disgusting. I am so grateful that they made a bypass filter, so I immediately purchased that, and I am back to having good tasting ice and water at the fridge. This is a 2-year filter, but I may let it go for even 3 years as I have a whole house sediment and charcoal filter in the garage before it even hits these filters. We don't use all that much ice or drink that much water from the fridge. These filters are certainly better priced than the MFRS, they last longer and install is easy. If you are using these for the refrigerator instead of the MFR's filters, install a shut off valve just before your waterdrop to make changeout easier so you don't have to move the appliance to shut the water off. You would want to get the one with the push to connect thin white tubing. Quick connect shut off valves for 1/4' tubing are sold here on Amazon for cheap. A little bit of water will come out no matter what during changeout, but you will only need a washcloth to wipe it up. Read more

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