U9000 Premium Under-Sink Water Filtration System with Intelligent Monitor, 1,000 Gal.
WaterChef® U9000 Under-Sink Water Filtration System
ELEVATE YOUR DRINKING WATER WITH THE ULTIMATE UNDER-SINK SOLUTION
Experience the ultimate in water filtration with WaterChef’s Big Block™ Technology, an innovative solution that combines the power of solid carbon block filtration with a unique blend of proprietary filter media. Engineered for maximum contaminant reduction, this advanced sink filter technology delivers up to 1,000 gallons (3,785 liters) of impeccably filtered water from a single cartridge—equivalent to an entire year of fresh, clean drinking water for most households.
The U9000 System is NSF/ANSI Certified for Superior Reduction of 78 Common Tap Water Contaminants, Including:
- Heavy Metals: Lead, Mercury
- Pathogens: Cysts (including Giardia and Cryptosporidium)
- Disinfectants: Chlorine, Chloramine
- PFAS "Forever Chemicals": PFOA, PFOS
- Microplastics
- Chlorine By-Products (includes Trihalomethanes)
- Synthetic Contaminants (includes Pesticides and Herbicides)
- Industrial Contaminants (includes Volatile Organic Compounds (VOCs))
- Petroleum-Based Contaminants (includes Benzene and MTBE)
- Emerging Contaminants: Pharmaceuticals, Detergents (NSF/ANSI Standard 401)
The U9000 not only filters municipally treated water but also reduces sulfur odors in well water from most disinfected sources. (For well users, we recommend water testing to ensure the system meets your specific needs.)
View the WaterChef U9000 Performance Data Sheet for a detailed list of certified contaminant reduction capabilities
Unlike other filtration methods like reverse osmosis or distillation, Big Block™ Technology preserves beneficial essential minerals such as Calcium, Magnesium, and Potassium in your water. This ensures a naturally balanced, refreshing taste without the de-mineralization and "flat" flavor associated with over-processed water.
Stop overpaying for small, less effective water filter cartridges that require constant replacements. With the WaterChef U9000 Under-Sink Water Filtration System, you'll enjoy the luxury of great-tasting, premium-quality water at a fraction of the cost—all directly from your tap.
Featuring an impressive 1,000-gallon capacity, the U9000 is designed to handle the needs of most households with ease, delivering the equivalent of over 7,500 plastic water bottles—all with just one cartridge replacement per year! (Compare that to traditional pitcher and faucet filters that not only remove fewer impurities but require up to 25 costly replacements annually.)
Not only will you save money, but you’ll also reduce waste. Fewer cartridge replacements mean less environmental impact, making the U9000 a smart, eco-friendly choice for your home.
When it’s time for a new filter, ordering is simple. Visit waterchef.com to purchase your replacement or opt for an Auto-Ship subscription to have cartridges delivered automatically—hassle-free, right when you need them.
Intelligent Monitoring takes the guesswork out of cartridge replacement. Unlike conventional water filters for sinks with simple timer-based monitors, our Intelligent Monitor goes beyond by measuring your actual usage. You'll never discard a cartridge prematurely or continue using one that has exceeded its rated capacity again.
Upgrade your kitchen with WaterChef’s Designer Series Faucet. Expertly crafted from solid forged brass and built to meet NSF/ANSI/CAN 61 standards, this premium single-temperature faucet combines durability with style. A ceramic disc valve ensures long-lasting reliability, while a precision-engineered aerator delivers a smooth, steady water stream.
For added convenience, the Intelligent Monitor™ LED indicators are seamlessly integrated into the faucet base, providing real-time feedback for easy filter changes. Plus, with the system’s under-sink design, you’ll free up precious counter and refrigerator space, eliminating the clutter of bulky pitcher filters.
Available in four stunning finishes—chrome, brushed nickel, oil-rubbed bronze, or polished brass—this faucet is designed to complement today's luxury kitchens.
PRO TIP: Replace an existing spray attachment or soap dispenser to install the system faucet without adding a new sink hole.
Bid farewell to the hassle and expense of frequent refrigerator filter replacements. With the optional Refrigerator Kit (sold separately) the U9000 seamlessly delivers premium-quality water to both your sink and refrigerator. Enjoy the convenience of filtered water and ice, all powered by one efficient filtration system.
In an industry plagued by unsubstantiated and overstated claims, WaterChef stands apart by prioritizing credibility and transparency. Our commitment to delivering proven filtration performance is backed by rigorous independent testing and certification through IAPMO Research & Testing—a global authority in water filtration certification.
The IAPMO Platinum Seal we proudly bear represents compliance with the industry's most stringent testing standards—NSF/ANSI Standards. Trusted by consumers, manufacturers, and regulatory agencies worldwide, this certification assures you that our systems deliver safe, effective, and reliable filtration performance. At WaterChef, earning your trust is our priority, and the IAPMO Platinum Seal reinforces our dedication to providing filtration you can depend on with confidence.
WaterChef Premium Under-Sink Filtration Systems are proudly built in the USA. Meticulously constructed from top-tier materials like heavy-duty surgical stainless steel and robust John Guest® fittings, these systems are designed to provide reliable, long-term performance.
Our dedication to quality extends beyond production. Every U9000 includes a LIFETIME Limited Warranty, demonstrating our confidence in the durability and effectiveness of our products. At WaterChef, we are committed to ensuring your satisfaction with every drop of pure, filtered water.
UR90 CARTRIDGE
Big Block™ Filtration Technology
Based on IAPMO testing data with typical water conditions. Actual performance may vary.
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U9000 Premium Under-Sink Water Filtration System with Intelligent Monitor 
In our other home, we have a water filter supplied by best filters, who went bankrupt. We were very happy with that filter and so we were extremely happy to find one of a similar design using a similar charcoal block technology. Installation of this was really pretty straightforward-there was already a hole in the sink where there had been a soap dispenser so no drilling was required. It is awkward of course to fiddle around under the sink, because it’s a cramped space and not because of a problem with the design of this filter. But it went in easily enough, connected straightforwardly, works perfectly well and does what we needed to do. This is a straightforward product to install and it does seem to remove the extreme swimming pool/chlorine taste from the water and I’m pretty sure it does a good job purifying it too. So I would strongly recommend this product on the basis that it is absolutely easy and straightforward to install, especially if you already have the appropriate hole in the counter next to your tap.
Product CommentsReasonably straightforward to install - all necessary parts came with it. Does what i need it to do.
In an industry riddled with unvalidated and misleading performance claims, having a trusted, independent “third party” organization like IAPMO R&T, NSF, or WQA evaluate a water filtration system against an "official" standard or protocol that has been developed by industry experts, public health officials and consumer representatives, gives you the ability to make a sound and informed choice about the performance claims of the system.
Some water filter manufacturers base their performance claims on internal test results from their own laboratories, but you would have to know them very well to trust whether the performance claims they make for their products are true or misleading. Having a trusted testing organization “validate” performance claims gives you the peace of mind you are looking for when it comes to selecting the right system for you and your family.
YES. While this system has been specifically designed to reduce contaminants that are most commonly found in municipally treated water supplies, it also has the ability to work well on most disinfected wells.
Prior to making the decision to purchase any home water treatment system, it is advisable to have your well water tested first. Once you have your test report, call WaterChef Customer Care at 1-800-879-8909 and request to have one of our water quality specialists review the specific substances and contaminants shown on your report. This will help us to determine whether this system is the right solution for you.
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- 15% OFF Auto-Shipped Replacement Cartridges
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