U9000 Premium Under-Sink Water Filtration System with Intelligent Monitor
WaterChef® U9000 Under-Sink Water Filter System
YOUR ULTIMATE UNDER SINK DRINKING WATER FILTRATION SOLUTION
Combining the power of solid carbon block filtration with a unique, proprietary blend of additional filter media, WaterChef’s innovative Big Block™ filtration technology maximizes contaminant reduction. This effective sink filter delivers 1,000 gallons (3,785 L) or up to one year of freshly filtered drinking water from a single cartridge.
The unique formulation provides superior contaminant reduction for a broad range of 75 common tap water contaminants, including:
- Lead
- Mercury
- Cysts (including Giardia and Cryptosporidium)
- Chlorine
- Chloramine
- Chlorine By-Products (includes Trihalomethanes)
- Synthetic Contaminants (includes Pesticides and Herbicides)
- Industrial Contaminants (includes Volatile Organic Compounds (VOCs))
- Emerging Contaminants (includes Pharmaceuticals and Detergents)
- Petroleum Contaminants (includes Benzene and MTBE)
Additionally, this media formulation allows beneficial minerals (such as Calcium, Magnesium, and Potassium) to remain in your drinking water. This results in great-tasting water that is cleaner, healthier, AND naturally balanced (without the de-mineralization and "flat" taste associated with other water filtration methods such as Reverse Osmosis and Distillation).
It also reduces sulfur odors in drinking water and can be used to filter municipally treated water supplies and well water from most disinfected wells. (If you are on a well, it is advisable to have your water tested before purchasing any home water filter treatment system. This will ensure that you choose the best filter system for your specific needs.)
View the WaterChef U9000 Under-Sink Performance Data Sheet for a complete list of certified contaminant and substance reduction capabilities.

Stop being nickel and dimed to death by small, costly, and less effective water filter replacement cartridges. With a WaterChef U9000 Under-Sink Water Filtration System, you get better-tasting, premium quality water at a fraction of the cost. Simply turn on your tap and enjoy a stream of fresh, filtered water on demand.
You’ll also enjoy the convenience of a huge 1,000 GALLON rated capacity. (That’s over 7,500 plastic water bottles!) For most families, that means just one cartridge replacement per year! (Compare that to the tiny cartridges in pitcher and faucet filters. They remove less and require up to 25 replacements per year.)
And, fewer water filter cartridges means less waste too. When you do need a new filter, you can easily order them online at waterchef.com or add an easy-to-manage Auto-Ship subscription to receive your cartridges automatically when you need them.

Intelligent Monitoring takes the guesswork out of cartridge replacement. Unlike other water filters for sinks with simple timer-based monitors, WaterChef's Intelligent Monitor measures your actual usage, so you'll never discard a cartridge prematurely or continue using one that has exceeded its rated capacity again. For added convenience, LED indicators are built right into the system's premium-grade designer faucet.

WaterChef’s Designer Series Faucet is a premium grade, single-temperature faucet with solid forged brass construction (NSF/ANSI/CAN 61 compliant). It also features a ceramic disc valve for reliability and an aerator tip for a steady stream. For added convenience, the Intelligent Monitor™ LED indicators are built right into the faucet base. And because the filter system is located discreetly under the sink, you won't take up space on your counter or in your refrigerator with pitcher filters.
This faucet complements today’s high-end kitchens with its clean, modern design and choice of four beautiful finishes. Choose from chrome, brushed nickel, polished brass, or oil-rubbed bronze.
INSTALLATION TIP: An existing spray attachment or soap dispenser may be removed as an alternative to drilling an additional sink hole to install the dedicated system faucet.
Say goodbye to the hassle and expense of frequent refrigerator filter replacements. Simply add an optional Refrigerator Kit (sold separately) to your under counter filter installation. Once installed, you'll be supplying premium quality water to both your sink and your refrigerator from a single U9000 System.
Sadly, the water filtration industry is riddled with manufacturers and sellers who make unvalidated and exaggerated performance claims. You can rest assured knowing that WaterChef has invested in independent NSF/ANSI testing and certification by one of the industry's most trusted authorities, IAPMO Research & Testing. IAPMO requires the strictest of testing and compliance standards. They are valued by consumers, manufacturers, retailers, and regulatory agencies across the globe. Trust is what independent NSF/ANSI Certification is all about.
WaterChef Premium Under-Sink Filtration Systems are quality crafted in the USA from the finest, most durable materials available and include a full LIFETIME Limited Warranty – one of the longest and most comprehensive warranties in the water filtration industry! At WaterChef, we stand behind our products and our customers. Be sure to register your product on our website so we can provide the technical or warranty assistance you need.
UR90 CARTRIDGE
Big Block™ Filtration
the Cost of Competing Brands
Based on IAPMO testing data with typical water conditions. Actual performance may vary.
OUR CUSTOMERS SAY IT BEST
BEST BUY OF 2022
I'm obsessed! My hair was getting so dry, frizzy and damaged no matter how much money I spent on expensive hair products. I bought this water filter and it's softer than ever...
WONDERFUL SHOWER
Replace whatever you have with this! Wonderful shower head, great pressure, with good water flow settings. Blows the competition out of the water!
WHAT A DIFFERENCE!
Oh my god! What a difference in my water! I am so glad I found this! I will buy this product a millions times over again! If you are looking for a water filtration system for you home, WaterChef is the product you want. Great tasting water at its best!
GREAT UPGRADE
Replaced my Culligan 2 cartridge under counter filter with this. It’s going to be so much easier to replace the filter cartridge. Water flows out probably 30% faster and tastes great. Install was simple.
REAL WATER!
I knew I had made the right decision to buy this product when I first took a drink of the filtered water. It didn't have a funny taste to it which was a problem with my previous system. I also loved the slim design of the casing. Thanks a heap!
WHY DID WE WAIT SO LONG?
We are very happy with our new filter. Not sure why we waited this long to get one, installed very easy and the water is clean and smooth! Thank you.
GET ONE TODAY!
Words can not describe how much I love my shower wand with filter! Best showers I’ve ever had, no kidding!
VERY HAPPY!
I am very happy with my water filter. I have great tasting water now. Three people in my apartment complex each bought the system and are extremely happy with it.
FIVE STARS.
I give this product and the company FIVE STARS. I wish every organization did business with was as helpful and friendly to deal with.





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