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Undersink Water Filter Systems

Keep your kitchen space neat and tidy, while reducing contaminants in your tap water with an under sink water filter system.

The beauty of under sink water filter systems is that they neatly fit underneath your sinks and don’t rob you of valuable counter space as countertop water filters do. Unlike other filter models, with under sink water filters there are no valves or tubing cluttering your counter. Because they remain out of sight, you can install larger under sink water filter models designed to filter out additional water contaminants such as fluorides, arsenic, and nitrates.

Below you’ll find over 60+ OEM under sink water filter systems, housings and filters from some of the top brands, including Pentek®, Culligan®, Whirlpool®, Doulton®, OmniFilter®, and more.

Need help choosing the right under sink water filter system? Our experts can help you choose the perfect under sink water filter to address all of your water quality concerns, just give us a call at 1-800-277-3458.

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KPPA Klean Kanteen Sippy-Top Bottle Adapter
K27PPS-BG Klean Kanteen 27-Ounce Stainless Steel Water Bottle with Sport-Top - Be Green
K27PPS-BE Klean Kanteen 27-Ounce Stainless Steel Water Bottle with Sport-Top - Black Eclipse
K27PPS-IR Klean Kanteen 27-Ounce Stainless Steel Water Bottle with Sport-Top - Indicator Red
K27PPS-OB Klean Kanteen 27-Ounce Stainless Steel Water Bottle with Sport-Top - Ocean Blue
K27SSLRF-BS Klean Kanteen Reflect 27-Ounce Stainless Steel Water Bottle with Bamboo cap - Brushed Finish
K27SSLRF-MS Klean Kanteen Reflect 27-Ounce Stainless Steel Water Bottle with Bamboo cap - Mirrored Finish
K12PPS Klean Kanteen 12-Ounce Stainless Steel Water Bottle with Sport-Top
K40PPS Klean Kanteen 40-Ounce Stainless Steel Water Bottle with Sport-Top
K20VWSSL Klean Kanteen 20-Ounce Stainless Steel Wide Insulated Bottle with Loop-cap
K27WSSL Klean Kanteen 27-Ounce Stainless Steel Wide Mouth Bottle with Loop-cap
KWPPC Klean Kanteen Cafe Cap
KPPF Klean Kanteen Flat Cap
KPPL Klean Kanteen Loop Cap
KPPS Klean Kanteen Sport Cap 2.0
KBINER3 Klean Kanteen S-Biner #3 Stainless Steel S Shaped Carabiner
K-201 Kohler Undersink Water Filter Cartridge Replacement

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  • W9380040 Doulton Two Stage Duo Undersink Drinking Water System
  • WQCFU-T-KIT Watts Triple Drinking Water Filtration System w/Kwik-Change Filter Cartridges
  • W9320007 Doulton Undersink Ceramic Candle Filter Housing

    W9320007 Doulton Undersink Ceramic Candle Filter Housing

    $110.00
    MSRP: $215.99
    Save 49%
  • W9330958 Doulton UltraCarb Undersink Ceramic Candle Filter System
  • US-UF3 Culligan Ultrafiltration Drinking Water System
  • 3M Aqua-Pure AP510 Water Filter System
  • 31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    $153.99
    MSRP: $183.95
    Save 16%
  • CQE-US-00324 Crystal Quest Undersink Triple Nitrate PLUS Filtration System
  • CQE-US-00320 Crystal Quest Undersink Triple Arsenic PLUS Filtration System
  • CQE-US-00316 Crystal Quest Undersink Double Fluoride Filtration System
  • CQE-US-00313 Crystal Quest Undersink Double Ceramic PLUS Water Filtration System
  • WHER25 Whirlpool Reverse Osmosis Undersink Water Filtration System
  • W9380002 Doulton Undersink Filter System

    W9380002 Doulton HIP3 Undersink Water Filtration System

    $154.00
    MSRP: $230.08
    Save 33%
  • W9380001 Doulton Undersink Water Filtration System

    W9380001 Doulton Undersink Water Filtration System

    $124.00
    MSRP: $169.99
    Save 27%
  • W9330962 Doulton Sterasyl Undersink Ceramic Candle Filter System
  • W9330957 Doulton UltraCarb Undersink Ceramic Candle Filter System
  • W9320004 Doulton HIS Undersink Water Filtration System

    W9320004 Doulton HIS Undersink Water Filtration System

    $127.00
    MSRP: $235.99
    Save 46%
  • 36005 Hydrologic SmallBoy De-Chlorinator and Sediment Filter System With Upgraded KDF
  • US-1500 Pentek Undersink Filter System with Monitor

    US-1500 Pentek Undersink Filter System with Monitor

    $172.09
    MSRP: $228.99
    Save 25%
  • US-1000 Pentek Undersink Filter System

    US-1000 Pentek Undersink Filter System

    $130.79
    MSRP: $179.99
    Save 27%
  • CBF3-S-05 OmniFilter Undersink Filter System

    CBF3-S-05 OmniFilter Undersink Water Filtration System

    $105.99
    MSRP: $108.34
    Save 2%

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