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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.

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  • RWC-5 American Plumber Undersink Filter Replacement Cartridge
  • AMERICAN-PLUMBER-W5CIP478

    AMERICAN-PLUMBER-W5CIP478

    $16.99 Retail Price:  $17.24
  • IL-IM-01 3M Aqua-Pure Inline Water Filter

    IL-IM-01 3M Aqua-Pure Inline Water Filter Cartridge

    $18.99 Retail Price:  $24.14
  • CULLIGAN-IC-EZ-1

    CULLIGAN-IC-EZ-1

    $20.99 Retail Price:  $27.13
  • RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge
  • US-EZ-1 Culligan Level 1 Easy-Change Undersink Filter System
  • CFS517 Cuno Whole House Filter Replacement Cartridge

    CFS517 Cuno Whole House Filter Replacement Cartridge

    Regular Price: $76.99

    Special Price: $62.05

  • CFS8720 Cuno Whole House Filter Replacement Cartridge

    CFS8720 Cuno Whole House Filter Replacement Cartridge

    $52.05 Retail Price:  $61.97
  • CFS8720-S Cuno Whole House Filter Replacement Cartridge

    CFS8720-S Cuno Whole House Filter Replacement Cartridge

    $58.05 Retail Price:  $64.39
  • CFS9720 Cuno Whole House Filter Replacement Cartridge

    CFS9720 Cuno Whole House Filter Replacement Cartridge

    Regular Price: $50.05

    Special Price: $45.05

  • EV9617-22 Everpure 2CB5-S Replacement Filter Cartridge

    EV9617-22 Everpure 2CB5-S Replacement Filter Cartridge

    $46.65 Retail Price:  $65.54
  • GS-215-CB5-B Pentek Inline Filter Replacement Cartridge

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

    $24.69 Retail Price:  $30.69
  • WATER-FACTORY-SYSTEMS-47-55702G2

    WATER-FACTORY-SYSTEMS-47-55702G2

    $26.99 Retail Price:  $34.49
  • 47-55708G2 Water Factory Systems Replacement Filter Cartridge
  • WATTS-MAXETW-975

    WATTS-MAXETW-975

    $11.99 Retail Price:  $13.79
  • PLEKX-10-10 KX Technologies PlekX Whole House Filter Replacement Cartridge
  • Q5505 Omnipure Water Filter

    Q5505 Omnipure Water Filter

    $11.49 Retail Price:  $15.51
  • C1 Pentek Undersink Filter Replacement Cartridge

    C1 Pentek Undersink Filter Replacement Cartridge

    $12.99 Retail Price:  $15.34
  • OMNIPURE-Q5405

    OMNIPURE-Q5405

    $12.99
  • P1020266 Culligan Carbon Block Water Filter
  • 22105 Hydrologic SmallBoy Sediment Filter

    22105 Hydrologic SmallBoy Sediment Filter

    $8.99 Retail Price:  $12.06

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