Search  for anything...

Waterdrop 15UA Under Sink Water Filter System, 2 Years, Reduces Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Connects Directly to Your Faucet, NSF/ANSI 42 Certified

  • Based on 7,334 reviews
Condition: New
Checking for the best price...
$53.99 Why this price?
Save $15.99 was $69.98

Buy Now, Pay Later


As low as $9.00 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – 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, Affirm, Afterpay, Apple Pay, and PayTomorrow. 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

FREE 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 Thursday, May 14
Order within 5 hours and 40 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Set name: 15UA


Features

  • Ultra-Long Service Life: When used with municipal water, each under sink water filtration system has a maximum service life of 24 months.[1]Before going on vacation, please put the filters in separate sealed plastic bags, and store the bags in your refrigerator (NOT the freezer) to keep it fresh in 30 days. It is specifically designed for municipal tap water and can only be used with cold water sources.It is not suitable for well water or hot water.
  • Innovative Multistage Filtration: The Waterdrop Direct Connect under sink water filtration system uses innovative multistage filtration. It can effectively reduce PFAS, PFOA/PFOS, lead, chlorine, heavy metals, chemical impurity, sediment and other large particles.[2] Enjoy pure water straight from your tap no need to buy bottled water anymore.
  • 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. This design is suitable for long-term use in undersink water filter systems.
  • IAPMO Certified Filter: Made from premium BPA-free and lead-free materials, the under sink water filter is certified by IAPMO against NSF/ANSI 372 Standard. Certified by IAPMO against NSF/ANSI 42 Standard, the water filter can effectively reduce chlorine, taste and odor. Tested by a third-party laboratory against NSF/ANSI 53 Standard, it can reduce lead.To look over the 42 & 372 certification, please search "WD-15UA" on the IAPMO website.
  • Easy Installation: No professional installation or plumber is required for this under sink water filter. The system connects to cold water only and installs in less than 3 minutes with push-to-connect fittings. The filter can be replaced in 3 seconds. Includes a 3/8 direct-connect hose for standard 3/8 feed water valves under US sinks, plus a 3/81/2 converter fitting for both 1/2 and 3/8 cold water lines and faucets.
  • Fast Flow Rate & Multiple Uses: The fast and stable water supply provides pure and fresh water that tastes like spring water. The tested full flow rate is 0.75 gpm at 60 psi. Developed for household and commercial use, the under sink water filter system can be installed in your kitchen, bathroom, RV, or office to meet your daily water needs. Ideal for drinking, cooking, skincare, and cleaning.
  • TDS is not a professional way to measure the water quality. Essential minerals such as calcium, potassium, sodium, and magnesium are dissolved solids, so PPM may not drop if you test with a TDS meter. The Waterdrop undersink water filtration system keeps essential minerals while removing unwanted elements.
  • Note: The activated carbon is made from natural coconut shells. Please confirm whether you are allergic to it. Attention: The extended filter life of this filter requires more filter materials, resulting in a larger product size. Please verify the dimensions of your undersink space before making a purchase.

Brand: Waterdrop


Special Feature: PFAS, PFOA/PFOS and Chlorine Reduction, 24 months, NSF/ANSI 372&42, Easy Installation, Replacement filter WD-RF15 See more


Product Dimensions: 3.9"L x 3.6"W x 16.7"H


Material: NSF/ANSI Approved Material Components


Capacity: 19000 Gallons


Included Components: Waterdrop Undersink Water Filtration System×1 ·Inlet hose×1 ·Outlet hose×1 ·3/8’’–1/2’’ Convertor set×1 ·Self-tapping screws×2 ·Teflon tape×1 ·Drilling sticker×1 See more


Package Information: Cartridge


Installation Type: Under Sink


Purification Method: Remove iṁpurities, retain beneficial minerals


Power Source: Corded Electric


Other Special Features of the Product: PFAS, PFOA/PFOS and Chlorine Reduction, 24 months, NSF/ANSI 372&42, Easy Installation, Replacement filter WD-RF15


Container Type: Cartridge


Installation Type: Under Sink


Purification Method: Remove iṁpurities, retain beneficial minerals


Power Source: Corded Electric


LowerTemperature Range: 32 Degrees Fahrenheit


Maximum Flow Rate: 0.75 Gallons Per Minute


Filter Life Cycle: 24 Months


Smart Home Compatibility: Not Smart Home Compatible


Product Shelf Life: 24 Months


Item Dimensions L x W x H: 3.9"L x 3.6"W x 16.7"H


Capacity: 19000 Gallons


Material Type: NSF/ANSI Approved Material Components


EU Spare Part Availability Duration: 2 Years


Brand Name: Waterdrop


Included Components: Waterdrop Undersink Water Filtration System×1 ·Inlet hose×1 ·Outlet hose×1 ·3/8’’–1/2’’ Convertor set×1 ·Self-tapping screws×2 ·Teflon tape×1 ·Drilling sticker×1


Model Name: WD-15UA


Model Number: WD-15UA


Warranty Description: 1 Year Manufacturer


UPC: 840814170847


Manufacturer: Waterdrop


Part Number: WD-15UA


Item Type Name: 16000 Gallons


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 14

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.

Top Amazon Reviews


  • Exceptional Customer Service
Set name: 10UB-CM
After considerable research, I ordered a Waterdrop WD-10UB-CM undercounter water filter (for the removal of chloramine) from Amazon. The filter was shipped from Waterdrop which I quickly receive. The installation instructions were through and easy to follow. After installation I had a small drip from the filter cartridge. I called Waterdrop customer service. I explained the issue to Katrina who promptly sent me another filter which resolved the issue. Since I have only used the filter a few times I can’t comment on its efficiency, other than to say it appears to be well made and is working properly. The Waterdrop customer service is exceptional. I would definitely recommend Waterdrop for any of your filter needs. ... show more
Reviewed in the United States on February 9, 2026 by Jerry B

  • Peace of mind!
Set name: 15UAW-UF
I have trouble remembering to stay hydrated so I frequently drink water from the bathroom sink when I wake up, use the restroom, or go to bed. However, it wasn't filtered before and I had concerns about water quality dtraight from the tap, even though our city water is fairly decent. This gave me peace of mind and I sinply attached it to the cold water line in the bathroom. Pretty easy to do and the kit included everything you need to install it....except a drill! As you can see by the date I've had it since July 2024. I was surprised it had been that long and it's still running strong. The water tastes great and I have peace of mind that I'm getting good quality water when I drink it in that part od the house. ... show more
Reviewed in the United States on December 26, 2025 by JTD

  • Lasted less than 6 months
Set name: 15UA
Product states the filter is good for two years. However it’s been less than 3 months and the filter has stopped working. Poor quality filter from China that doesn’t work as advertised. Waterdrop 15UA Under Sink Water Filter System, 2 Years, Reduces Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Connect to Kitchen Faucet, NSF/ANSI 42 Certified, USA Tech ... show more
Reviewed in the United States on February 26, 2026 by Essie

  • Second purchase, zero regrets
Set name: 5Y
Let me preface this by saying this is my second time buying this exact filter from this company. I bought one for my first apartment and it outlived my stay there. I moved into a new apartment and purchased it again without hesitation. Water taste? GONE. 100%. The strong chemical taste and smell are completely gone. I live in Fort Worth, Texas, where the municipal water is treated with chloramines and has a higher, alkaline pH (this is publicly reported in the city’s water quality data). If you’re sensitive to taste and smell like I am, you’ll immediately notice the difference. Design and installation: It’s long, slim, and takes up very little space, which is perfect for apartment living. I bought the quick-connect version and installation was quick and straightforward. It does require a few basic tools, but the process is simple and well explained. Important install tip: Keep filter replacement in mind when choosing the install location. You’ll need enough clearance underneath to remove it. Replacement is a twist-and-pull-down motion, so don’t install it too close to the cabinet floor. Planning ahead makes future filter changes easy. (Leave like 2-3 inches open) Practical and environmental bonus: I’ve stopped buying bottled water. A 40-pack at Walmart is around $6 and it goes fast. This filter cost me $129.99, and spread over about 5 years that’s roughly $26 per year, which is far cheaper than constantly buying bottled water. On top of the savings, it significantly reduces plastic waste, which matters to me. (Although I would never let it reach max capacity to be honest) Final thoughts: I genuinely love this filter. It’s effective, compact, easy to replace, and ideal if you live in an apartment and don’t have the option for a whole-house system. (Reverse osmosis still the best thing BUT I CANNOT AFFORD IT) Everyone should have one. My only wish is that I had the same filtration in my shower as well. Highly recommend. ... show more
Reviewed in the United States on January 10, 2026 by Lya

  • Taste
Set name: BFU1
I’ve been using the Waterdrop filter for a few weeks now, and I can already taste the difference. The water is noticeably cleaner, fresher, and has zero chlorine smell. I actually enjoy drinking water straight from the tap now. Installation took just a couple of minutes — it’s super simple and the instructions are clear. I appreciate the slim, space-saving design too — perfect for my small kitchen setup. It filters fast and doesn’t slow down the water flow, which is a huge plus. And knowing it removes lead, chlorine, and other nasty stuff gives me peace of mind, especially with a baby on the way. Highly recommend if you care about water quality and want a hassle-free filter that actually works. ... show more
Reviewed in the United States on April 16, 2025 by Muzaffar

  • Company stands behind a great product!
Set name: BFU1
I crushed the provided adapter so it was unusable during initial install because the Crescent wrench was not tight enough. FYI, using the teflon tape with the provided adapters needs to be completely tightened, which is cumbersome in small areas. i telephoned the company, a rep answered promptly and sent a replacement part with no hesitation or mention of cost (free). i was amazed, the part came and installed (with my new found experience!) perfectly. the company followed up to verify everything was satisfactory, which is unbelievable in this day and age. the filter works as advertised and the Waterdrop people stand behind their products! ... show more
Reviewed in the United States on November 3, 2024 by alladat12

  • Worth a try!
Set name: 10UB-CM
The media could not be loaded. Just got it installed, and it seems like a good product! My install took a bit because my setup is dumb, but the instructions are clear, and the kit came with everything you need. Would be a quick install under normal circumstances! The water has good flow and tastes good, so we will see in time! I’d say it’s worth purchasing! ... show more
Reviewed in the United States on October 14, 2025 by Clint Ellis

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...