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Water Filtration Systems & Filters

Discount Filter Store carries a wide variety of water filters and filtration systems to make sure that you have clean water everywhere you need it. We offer camping water filters, RV filters, water bottles for travelers on the go. Purify your office or home’s drinking water with countertop filter systems, commercial grade filters, and whole house filter systems. Our filters are protected by our 100% Price Match Guarantee. We are happy to offer you the lowest possible price on our filters, matching any lower price listed by competitors.

Items 1 to 48 of 89 total

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  • W5CIP478 American Plumber Undersink Compact Filter Replacement Cartridge (2-Pack)
  • WCC American Plumber Undersink Filter Replacement Cartridge
  • WGC478 American Plumber Undersink Compact Filter Replacement Cartridge
  • WICSA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings
  • CB1 OmniFilter Undersink Filter Replacement Cartridge
  • NCP-10 Culligan Whole House Filter Replacement Cartridge
  • RV-500A Culligan Level 1 Inline RV Pre-Tank Exterior Filter
  • RV-600A Culligan Level 1 Inline RV Pre-Tank Exterior Filter
  • RV-700 Culligan Level 1 Inline RV Pre-Tank Exterior Filter
  • RV-800 Culligan Level 1 Inline RV Pre-Tank Exterior Filter
  • RVF-10 Culligan RV Pre-Tank Exterior Filter

    RVF-10 Culligan RV Pre-Tank Exterior Filter

    $34.99 Retail Price:  $38.51
  • US-600 Culligan Slim Undersink Filter System

    US-600 Culligan Slim Undersink Filter System

    $35.99 Retail Price:  $41.39
  • CFS517 Cuno Whole House Filter Replacement Cartridge

    CFS517 Cuno Whole House Filter Replacement Cartridge

    Regular Price: $76.99

    Special Price: $62.05

  • CS-11 Cuno Replacement Filter Cartridge

    CS-11 Cuno Replacement Filter Cartridge

    $57.99 Retail Price:  $60.94
  • HF10-MS Cuno Whole House Filter Replacement Cartridge

    HF10-MS Cuno Whole House Filter Replacement Cartridge

    Regular Price: $65.99

    Special Price: $50.05

  • W9120145 Doulton Replacement Candle Set (6-Pack)

    W9120145 Doulton Replacement Candle Set (6-Pack)

    $104.99 Retail Price:  $118.30
  • W9120562 Doulton Sterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9121020 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9121200 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9320004 Doulton Undersink Filter System

    W9320004 Doulton HIS Undersink Water Filtration System

    $176.16 Retail Price:  $204.88
  • W9330962 Doulton Sterasyl Undersink Ceramic Candle Filter System
  • EV4339-12 Everpure Claris L Replacement Hot Water Filter Cartridge

    EV4339-12 Everpure Claris L Hot Water Filter Cartridge

    $195.99 Retail Price:  $205.84
  • EV9617-22 Everpure 2CB5-S Replacement Filter Cartridge

    EV9617-22 Everpure 2CB5-S Replacement Filter Cartridge

    $46.65 Retail Price:  $65.54
  • SS-IMF Everpure Replacement Filter Cartridge

    SS-IMF Everpure Replacement Filter Cartridge

    $43.05 Retail Price:  $66.69
  • BW1000A Flojet Bottled Water Dispensing System
  • FXUTC GE SmartWater Undersink Filter Replacement Cartridge
  • GAC1SS OmniFilter Series C Undersink Filter Replacement Cartridge
  • 22017 Hydrologic Replacement De-Ionization Cartridge

    22017 Hydrologic Deionization Filter Cartridge

    $54.99 Retail Price:  $71.29
  • CB-25-1005 Hydronix Replacement Filter Cartridge
  • CBF1-S-05 OmniFilter Undersink Filter System

    CBF1-S-05 OmniFilter Undersink Water Filtration System

    $73.99 Retail Price:  $88.54
  • EPM-10 Pentek Undersink Filter Replacement Cartridge

    EPM-10 Pentek Undersink Filter Replacement Cartridge

    $9.99 Retail Price:  $10.57
  • FLOPLUS-10 Pentek Replacement Filter Cartridge

    FLOPLUS-10 Pentek Replacement Filter Cartridge

    $14.99 Retail Price:  $21.26
  • GAC-10 Pentek Undersink Filter Replacement Cartridge

    GAC-10 Pentek Undersink Filter Replacement Cartridge

    $12.99 Retail Price:  $17.99
  • GS-10-B Pentek Inline Filter Replacement Cartridge
  • GS-10-JG14 Pentek Inline Filter System

    GS-10-JG14 Pentek Inline Water Filtration System

    $12.99 Retail Price:  $15.28
  • GS-10ALS-JG14 Pentek Inline Filter System

    GS-10ALS-JG14 Pentek Inline Water Filter

    $13.39 Retail Price:  $17.70
  • GS-215-CB5-B Pentek Inline Filter Replacement Cartridge

    GS-215-CB5-B Pentek Inline Water Filter Cartridge

    $24.69 Retail Price:  $30.69
  • MG-10MCB Pentek MicroGuard Replacement Filter Cartridge

    MG-10MCB Pentek MicroGuard Replacement Filter Cartridge

    $72.99 Retail Price:  $84.05
  • TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    TSGAC-10 Pentek Undersink Filter Replacement Cartridge

    $20.99 Retail Price:  $24.60
  • UVS-110-1 Pentek UV System
  • MAXETW-975 Watts C-MAX Replacement Filter Cartridge
  • WHKF-DB1 Whirlpool Undersink Replacement Filter Cartridge
  • Whirlpool WHKF-DB2 Undersink Replacement Water Filter Cartridge
  • IF14C Ice-O-Matic Inline Water Filtration Cartridge

    IF14C Ice-O-Matic Inline Water Filter

    $90.99 Retail Price:  $97.74
  • IF18C Ice-O-Matic Inline Water Filtration Cartridge - 1

    IF18C Ice-O-Matic Inline Water Filter Cartridge

    $99.99 Retail Price:  $117.29
  • 1040 Katadyn Camping Water Filter Kit

    1040 Katadyn Camping Water Filter Kit

    $199.95 Retail Price:  $232.24
  • 8016389 Katadyn Camping Filter System

    8016389 Katadyn Camping Filter System

    $1,499.95 Retail Price:  $1727.24
  • MATRIKX-1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

Items 1 to 48 of 89 total

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