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Under Sink Water Filter System by Bestfilters - Three Stages of Water Filtration with Replaceable Filters
Under Sink long-lasting three stage water filter.

Under Sink Water Filter System by Bestfilters - Three Stages of Water Filtration with Replaceable Filters

Your Price:$167.88
Retail Price:$197.95
Your Savings:$30.07(15%)
Part Number:WU005

Choose Options

Brushed Nickel [+$25.00]
Brushed Stainless [+$25.00]
No Faucet (inline use only) [+$-15.00]

Under Sink 3 Stage Water Filter System by BestFilters 

Use code "wten" and save 10% off all water filter purchases, except Multipure!

This Triple Under Counter Water Filter System actually consists of 9 Stages of filtration in three separate filters.  Designed for maximum effectiveness on high sediment, chlorine-treated water supplies. The Under Counter Triple Superior Water Filter is a great value; combining excellent filtration and an affordable price. 

The three separate filters are: Filter 1:  5 micron sediment and particulate pre-filter protects both the Filter 2: KDF/GAC filter and the Filter 3: 1 micron Carbon Block filter. This excellent water filter system comes complete with a high-end designer ceramic-disk faucet.  Recommended for all municipal water systems, particularly older cities with high sediment or particulate matter in the water.

The long-lasting replaceable filters provide 2,500 Gallons (about a year at 7 gallons per day!) of great-tasting, healthy, crystal clear water. That`s less than 6 cents/gallon without shopping and lugging bottles around!  We recommend annual replacement of the filter cartridges. 

Stainless Steel Water Bottle with your water filter system purchase!


  • Multi-Stages with an Activated Carbon Block Filter
  • Lead Reduction: 2,500 gallons at 0.75 GPM
  • Cyst Reduction: Giardia, Cryptosporidium Class 1
  • Turbidity Reduction based on NSF 53
  • Outstanding Chlorine, Taste and Odor Reduction
  • Heavy Metal Reduction: Reduces soluble lead using an ion-exchange filter medium with high specificity for soluble lead. Advanced particulate filtration is used to intercept insoluble lead-containing particles.
  • Chemical Adsorption: Reduces volatile organic chemical contaminants including chlorine and other compounds that contribute to taste and odor.
  • Particulate, Cyst and Turbidity Reduction: Meets NSF Standard 53 for reduction of Cryptosporidium, Giardia, Entamoeba and Toxoplasmosis.  Filters provide > 99.98% reduction of 3-4 micron particulates, > 99.96% reduction of 1-2 µ particulates, and are high performance sediment filters with extended life.  Extruded activated carbon filters provide several times greater life than traditional molded carbon or granular carbon filters
  • Made in the U.S.A.
Measures: 14" wide x 5" deep x 13.5" high.  Includes all necessary parts and instructions for easy installation: (No plumber necessary if you're handy with tools).

Filter Cartridges included:

Stage 1: A 5-micron string-wound filter that provides large particulate and sediment reduction and protects the more expensive 2nd and 3rd stage filters from early clogging.

Stage 2: The filter cartridge in the 2nd stage of the WU005 triple systems utilizes KDF55 filtration media, GAC (granular activated carbon) and 3 separate polypropylene particulate filters. KDF 55 Media is designed specifically for removing or reducing chlorine and water-soluble heavy metals. It also controls scale, bacteria and algae. The process medium has received NSF International Certification. This medium is also in compliance with California’s Health and Safety Code Section 166875 (or commonly know as AB1953) and Vermont Act 193.  KDF55 is a high-purity, granulated copper and zinc-based alloy used to treat water through a process based upon the principle of redox (Oxidation-Reduction). 

Stage 3: The filter cartridge in the 3rd stage of the WU005 is a high capacity 1.0 micron carbon block filter, the Matrikx Pb-1 provides excellent contaminant reduction.  this solid carbon block filter provides 0.5 micron nominal filtration (1 micron absolute). A dense pre-filtration wrap combined with a high capacity extruded activated carbon block provides excellent filtration characteristics with a high affinity for adsorption of Chlorine, Lead, Cysts, VOC's, tastes, odors, dirt, rust and sediment.

Limited 1 year warranty on parts. We highly recommend replacing the housings every 5 years as the food grade materials used in the housing manufacture may become brittle. Maximum 75 psi water pressure.

New Owners Manual  (For under counter filters with John Guest polypropylene adapter valve)

5 Stars
Under Sink Triple Stage Superior Water Filter System
This filtration system was so easy to install and is a replacement system for my Omni. The water is crystal clear and tastes great. With the Omni, I had to refrigerate the water for the best taste. The filters that I had left work with this system, too, so I didn't waste them when I bought this one. It's really better than Omni and the filters last longer. So glad we chose BESTFILTERS!
Did you find this helpful?  3 of 4 Found Helpful
Reviewed by:  from NY. on 7/25/2014
5 Stars
Very good water filter system
We have used this system for 6+ years Very easy to use - once a year maintenance ... I recommend it.
Did you find this helpful?  3 of 4 Found Helpful
Reviewed by:  from California. on 12/30/2012
5 Stars
product was on time and no problem to install, we have good tasting water with good pressure will buy from bestfilters again
Did you find this helpful?  2 of 2 Found Helpful
Reviewed by:  from USA. on 2/22/2016
5 Stars
We replaced our reverse osmosis unit with this filter system to eliminate the atrocious amount of water that an RO system wastes. There is no comparison to the RO water, but this filter system does an acceptable job cleaning up the Colorado river water we drink.
Did you find this helpful?  2 of 3 Found Helpful
Reviewed by:  from Solana Beach, CA. on 3/25/2014
5 Stars
Under Sink long-lasting three stage water filter.
Love this product!
Did you find this helpful?  2 of 3 Found Helpful
Reviewed by:  from Tucson, AZ. on 9/11/2013
5 Stars
The filter came with what was needed to install. Water comes out and tastes good. The faucet is very nice, high quality and feels really good to turn, smooth.
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from Kalamazoo. on 9/26/2017
5 Stars
"Best purchase we ever made", said the lady of the house. I agree! We were tired of lugging in cases of water and hauling out bags of empties.Thought about and on counter unit but glad we went with the undercounter model. Installation was relatively easy,just wished I had make the hole for the faucet larger so that the supply line could have been attached before installing faucet. Filtered water has become the beverage of choice in our house.
Did you find this helpful? 
Reviewed by:  from Windsor. on 9/21/2016

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