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WaterChef UR90 Under-Sink Water Filter Replacement Cartridge

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Step Up to the Power of Big Block™ Filtration!

WaterChef® UR90 Under-Sink Replacement Cartridge features powerful Big Block™ filtration technology for superior contaminant reduction and a 1,000 GALLON Rated Capacity! Tested and Certified by NSF® for trusted performance.

Product Highlights

  • Superior Performance and Taste
  • Huge 1,000 GALLON Rated Capacity!
  • Proprietary, 3-Ply Pleated Pre-Filter
  • Tested & Certified by NSF® (Trusted Performance!)
  • Quick & Easy Filter Cartridge Install (No tools required.)
  • Made in the USA
FREE SHIPPING! (Contiguous U.S.)
Extra 15% OFF This Filter Cartridge
+ All Auto-Shipped Cartridges!  Details
*Auto-Ship is only available in the Contiguous U.S. at this time.

This system is affordable compared to many others and highly effective. When you look at other products on the market, many of them require frequent cartridge replacement which is great for those manufacturers, but not so convenient or cost effective for the consumer. Scott from Virginia, WaterChef Customer

  • Overview
  • Specifications
  • Reviews


WaterChef® Premium Under-Sink Filter Cartridges

Enjoy Superior Performance & a 1,000 GALLON Rated Capacity!

Your Intelligent Drinking Water Solution!

Superior Performance with Innovative Big Block™ Filtration Technology!

Combining the power of solid carbon block filtration with a unique, proprietary blend of additional filter medias, WaterChef’s exclusive Big Block™ Filtration technology maximizes contaminant reduction and delivers up to 1,000 GALLONS (3,785 L) of freshly filtered water with a single filter cartridge!

This unique formula provides unsurpassed contaminant reduction for a broad range of common tap water contaminants including: Chlorine, Chloramine, Lead, Cysts (including Giardia and Cryptosporidium), Chlorine By-Products (such as Trihalomethanes), Synthetic Contaminants (such as Pesticides and Herbicides), Industrial Contaminants (such as Volatile Organic Compounds (VOCs)) and Petroleum Contaminants (such as Benzene and MTBE), while allowing beneficial minerals (such as Calcium, Magnesium and Potassium) to remain in the water. The result is great tasting water that is cleaner, healthier AND naturally balanced (without the de-mineralization associated with other filtration technologies such as Reverse Osmosis and Distillation).

Say Goodbye to Small, Expensive and Less Effective Replacement Filter Cartridges.

With WaterChef under-sink filtration you’ll enjoy premium water filtration at a fraction of the cost! You’ll also enjoy the convenience of a 1,000 GALLON rated cartridge capacity. For most households, that's just ONE filter cartridge per YEAR! (Compare that to the replacement cartridges for pitcher filters, faucet filters and refrigerator filters that are so small that they can require as many as 25 cartridges per year!) Plus, fewer cartridges to change means less waste too!

Tested & Certified by NSF International - Trusted Performance.

nsf-logo-bug.gifTake comfort in knowing that WaterChef Under-Sink Filtration Systems and Replacement Cartridges have been independently Tested & Certified by NSF International, the water industry's leading authority. Since 1944, NSF International has been committed to making the world a safer place for consumers through its comprehensive certification programs and written standards for food, water and consumer goods. No other independent testing programs require the strict compliance standards imposed by NSF International. Credibility and trust are what NSF Certification is all about.

Discover the Difference...Discover WaterChef!

WaterChef® UR90 Premium Under-Sink Filter Cartridges

Replacement Filter Cartridge UR90
Installation Type Under-Sink
Cartridges Compatible with WaterChef® U9000 Under-Sink Water Filtration Systems only
Rated Capacity 1,000 GALLONS!
Rated Service Flow .65 gal/min @ 60 psi
Maximum Working Pressure 100 psig (689.5 kPa)
Minimum Working Pressure 30 psig (206.8 kPa)
Maximum Operating Temp. 100º F (38º C)
Minimum Operating Temp. 34º F (1º C)
Particle Retention Size Sub-Micron (0.5 micron)
Tested & Certified by NSF® International YES
NSF® Certifications NSF/ANSI Standard 42, NSF/ANSI Standard 53
Battery for Intelligent Monitor™ Included YES
Battery Type 2032 CR, 3V lithium

Product Reviews

  1. UR90 Under-Sink Replacement Cartridge

    Posted by Tom M on 20th May 2018

    Auto-Ship is a great way to receive your replacement filter every year, very convenient. I have owned my system 4 years now, one of the best products I have ever purchased, high quality materials used, we eliminated hundreds to thousands of plastic bottles yearly....

The WaterChef UR90 Under-Sink Water Filter Replacement Cartridge is
rated 5.0/5 based on 1 reviews


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*Auto-Ship is only available to customers located in the contiguous U.S. at this time.