300,000+ Happy Customers
WaterDrop Water Filter | Under Sink Direct Connect Filtration System
Bottled Water Was Never The Answer. Your Faucet Just Needed Backup.The WaterDrop Under Sink Filter connects straight to your existing faucet — no separate spout, no complicated install, just genuinely better-tasting water in under 3 minutes.Pick your model based on filtration capacity: WD-10UA (8,000 gal) / WD-15UA (16,000 gal) / WD-17UA (19,000 gal).
FACTORY-DIRECT SAVINGS
In stock. Shipped within 1–3 business days.
EASY INSTALLATION
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DESCRIPTION
No drilling. No new faucet. No excuses.
The Waterdrop Direct Connect Under Sink Filter hooks straight into your existing cold water line and faucet, so the water you already pour gets a serious upgrade. Its multi-stage filter reduces chlorine, bad taste and odor, sediment, and rust.
Chlorine reduction is certified to NSF/ANSI 42, and the materials are certified lead-free to NSF/ANSI 372. Long service life, and it keeps the good minerals in.
Renters, rejoice. Pitchers, retire.
HOW TO USE
- Shut off the cold water under your sink.
- Connect it between the cold water valve and your faucet line using the included fittings. Cold water only.
- Turn the water back on, check for leaks, and run the faucet for a few minutes to flush the new filter.
- Replace the filter when it hits its rated gallons or months.
HOW DOES IT WORK
Tap water flows into the filter housing and through layers of filtration media.
First, fine sediment media catches sand, rust, and particles. Then activated carbon grabs chlorine and the compounds behind bad taste and odor.
Clean water comes out of your regular faucet. No tank, no electricity, no waiting.
Minerals like calcium and magnesium pass right through, so your water still tastes like water, just better.
Industry Leadership Certifications
3 Easy Steps To Complete Transformation
It's never been easier to experience soft, clean water from every tap in your home...
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Place your order
Secure your SoftPro ECO water softener with whole-house filter in a few clicks with our easy and secure checkout process.
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Get Fast Free Shipping
We'll pack and ship your order within 1–3 business days, with tracking sent straight to your inbox.
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Enjoy Soft, Clean Water
Experience spa-like water in just moments after installation without worry of hardness or contaminants. Set it and forget it!
Five-Stage Filtration. Three-Minute Install. Zero Guesswork.
Improved filtration
At 0.5 micron filtration accuracy, this system removes 99% of chlorine, taste and odor, sediment, rust, and other heavy metals, while retaining essential minerals like potassium, calcium, sodium, and magnesium. Fresh, genuinely healthy water, not just "clean" water.
Extended filter life:
8,000 / 16,000 / 19,000 gallons of filtration capacity — enough to cover a tap water consumption of 22 gallons a day.
Less future replacement cost:
Roughly 10¢ a day for the first year, dropping to just 5¢ a day for filter replacement after that — and your water quality only gets better.
The Nitty Gritty
- Model weight: WD-10UA 3.30 lb / WD-15UA 3.60 lb / WD-17UA 4.20 lb
- Dimensions: WD-10UA 3.6"x12.3" / WD-15UA 3.6"x16.7" / WD-17UA 3.6"x19.1"
- Tested flow rate: 2 GPM @ 60 PSI
- Color: Black
- Materials: BPA-free plastic system cover, metal faucet
- Filter stages: Polyester membrane, activated carbon block, KDF, fluoride remover, scale inhibitorModel weight: WD-10UA 3.30 lb / WD-15UA 3.60 lb / WD-17UA 4.20 lb
- Dimensions: WD-10UA 3.6"x12.3" / WD-15UA 3.6"x16.7" / WD-17UA 3.6"x19.1"
- Tested flow rate: 2 GPM @ 60 PSI
- Color: Black
- Materials: BPA-free plastic system cover, metal faucet
- Filter stages: Polyester membrane, activated carbon block, KDF, fluoride remover, scale inhibitor
See It In Action
Five-Stage Filtration That Actually Covers The Hard Stuff
- Advanced five-stage filtration removes 99% of lead, chlorine, taste and odor, sediment, fluoride, rust, arsenic, and other heavy metals
- Push-to-connect fittings mean install takes less than 3 minutes; twist-and-lock design swaps filters in 3 seconds, no tools required
- Filtration capacity of 8,000 / 16,000 / 19,000 gallons delivers safe filtered water all day
- Compact design fits kitchens, bathrooms, RVs, or small offices without eating your under-sink storage
Note: this expanded contaminant list (lead, fluoride, arsenic) reflects the system's full tested capability — see Block 9 for the complete breakdown.
Improved Filtration, Less Replacement Hassle
Improved filtration
At 0.5 micron accuracy, this system removes 99% of lead, chlorine, taste and odor, sediment, fluoride, rust, arsenic, and other heavy metals. You don't have to think twice about what's in your filtered water.
The system also retains minerals your body actually needs — potassium, calcium, sodium, magnesium. Fresh, healthy water, not stripped water.
Extended filter life:
8,000 / 16,000 / 19,000 gallons of capacity, enough to meet a tap water consumption of 22 gallons a day.
Less future replacement cost:
About 10¢ a day for the first year, dropping to 5¢ a day after — and your water quality keeps improving the whole time.
Authorized. Legit. No Knockoffs.
Genuine WaterDrop parts. Authorized dealer status. No gray-market nonsense — just the real thing, every time.
The Full Breakdown
This system is designed to remove a genuinely wide range of contaminants: heavy metals like lead, mercury, and arsenic; harmful inorganic pollutants like fluoride and nitrites; organic pollutants like benzene, formaldehyde, and PFAS (PFOA & PFOS); plus chlorine, chloramine, sediment, and rust — all while improving taste and odor. At 0.5 micron filtration accuracy, it also catches fine particles and microbial cysts, while retaining essential minerals like calcium and magnesium for genuinely healthier water.
Unlike bulky RO systems, this filter is compact and space-saving — built for installation under the sink in kitchens, bathrooms, RVs, or small offices. It's versatile enough to handle cooking and washing produce too, not just drinking water. For anyone wanting an alternative to countertop filters or complex RO setups, it delivers instant access to purified water with minimal effort — reliable performance, minimal space, real convenience.
Real Experts. Real Value.
Our mission is simple: help people live healthier, happier lives with quality water solutions for their families and businesses. We've delivered exactly that across North America since 1990 — better taste, fewer toxins, and no more costly plumbing corrosion or staining.
We carry the best brands in the industry, bundled into packages that make installation and operation genuinely simple.
Stop Guessing. Start Knowing.
Everyone's water treatment needs are different. Our Water Intelligence Engine™ cuts through the guesswork — properly sizing your solution, recommending the right treatment path, comparing all major brands side by side, and grading your local water quality.
Unmatched Expertise
At Quality Water Treatment, you're family, not foot traffic. We know these products inside and out — no wandering a big box aisle hoping to flag down someone who's actually seen an under-sink filter before. We hand you the right equipment for YOUR specific water, shipped straight to your door.
Decades Of Experience, Zero Pushy Sales Tactics
After 30+ years in business, we know water treatment like no one else. Our trained water treatment consultants answer every question, compare all major brands, and never push a sale. Live chat, text, phone, email — everything you need is at your fingertips.
Delivered To Your Door With Ease
Every order ships within 1–3 business days. No waiting, no hassle, complete transparency on order status — automatic email alerts, trackable anytime.
Affordable Ways To Pay
You deserve clean, filtered water starting now — not "whenever the budget allows." Zip gets you 4 interest-free payments. Affirm breaks it into small monthly chunks.
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5.0 / 5
I just wanted to say thank you for your excellent products and service over the past 12 years.
Daniel R.Verified CustomerTexas
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5.0 / 5
After we installed the Softpro Elite I noticed a significant difference in the house water quality.
Julie M.Verified CustomerFlorida
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5.0 / 5
I decided to go with the Softpro water softener over Fleck. Very impressed and satisfied with their products and customer service!
Roy P.Verified CustomerCalifornia
