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WaterChef UR90 Under-Sink Water Filter Replacement Cartridge, 1,000 Gallon Capacity

  • WaterChef UR90 under-sink replacement filter cartridge

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 WQA for trusted performance.

Product Highlights

  • Superior Performance and Taste
  • Huge 1,000 GALLON Rated Capacity!
  • Big Block™ Technology & Proprietary, 3-Ply Pleated Pre-Filter
  • WQA Gold Seal Certified (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 media, 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 superior contaminant reduction for a broad range of common tap water contaminants including:

  • Lead
  • Mercury
  • Cysts (including Giardia and Cryptosporidium)
  • Chlorine
  • Chloramine
  • Chlorine By-Products (such as Trihalomethanes)
  • Synthetic Contaminants (such as Pesticides and Herbicides)
  • Industrial Contaminants (such as Volatile Organic Compounds (VOCs))
  • Emerging Contaminants (such as Pharmaceuticals and Detergents)
  • Petroleum Contaminants (such as Benzene and MTBE)

Additionally, the UR90's unique media formulation allows 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 and "flat" taste associated with 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 WQA - Trusted Performance!

WQA Gold Seal

The water filtration industry is riddled with unvalidated, exaggerated and misleading performance claims, but you can rest assured knowing that WaterChef has invested in extensive third-party testing and certification by one of the water filtration industry's leading authorities, the Water Quality Association (WQA).

Requiring the strictest of compliance standards, WQA is valued by consumers, manufacturers, retailers and regulatory agencies worldwide. Trust is what independent NSF/ANSI 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 Up to 1,000 GALLONS or One Year per Filter Cartridge!
Rated Service Flow .75 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 WQA YES
Certified by CA Dept. of Public Health YES
NSF/ANSI Certifications NSF/ANSI Standard 42, 53 and 401
Battery for Intelligent Monitor™ Included YES
Battery Type 2032 CR, 3V lithium (included with Cartridge)

Product Reviews

  1. Good product, Great customer service

    Posted by John on 19th Dec 2019

    I ordered UR90 replacement cartridge.
    But somehow it produced cloudy filtered water.
    I contacted Waterchef customer service thru email about the issue, and the representative Chelsey Young immediately replied to me and sent me a alternative UR90-M replacement cartridge.
    I replaced with the new cartridge, and it produced clear water without any issue.
    Thank you for the immediate attention and the replacement cartridge,
    You are number one customer service,


  2. 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, 1,000 Gallon Capacity is
rated 5.0/5 based on 2 reviews


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