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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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  1. 67300 Aquamira Home Emergency Drinking Water Kit
  2. APHOSF-RC 3M Aqua-Pure High-Output Shower Filter Cartridge

    APHOSF-RC 3M Aqua-Pure High-Output Shower Filter Cartridge

    Fits 3M Aqua-Pure high-output filtered showerheads Learn More
    $40.99 Retail Price:  $42.54
  3. 3M Aqua-Pure APIL3R Inline Water Filter

    APIL3R 3M Aqua-Pure Inline Water Filter Cartridge

    Fits the 3M Aqua-Pure APIL3 inline water filtration system Learn More
    $40.99 Retail Price:  $45.41
  4. RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-4, US-EZ-4, and RV-EZ-4 Learn More
    $40.99 Retail Price:  $50.59
  5. EV9608-10 Everpure 2JT Flushing and Sanitizing Cartridge

    EV9608-10 Everpure 2JT Flushing and Sanitizing Cartridge

    Fits Everpure filter heads including models QL1, QL2, QL3, and QL3B Learn More
    $40.99 Retail Price:  $49.44
  6. MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More
    $40.99 Retail Price:  $51.74
  7. CBC-10BB-WF Tier1 Water Filter Cartridge

    CBC-BB Pentek Comparable Water Filter Cartridge by Tier1

    Fits filtration system housings that accepts 10 x 4.5 inch cartridges Learn More
    $40.99 Retail Price:  $43.69
  8. EP5-20BB Tier1 Carbon Block Water Filter

    EP5-20BB Tier1 Carbon Block Water Filter

    Fits filtration system housings that accepts 20 x 4.5 inch cartridges Learn More
    $40.99 Retail Price:  $62.09
  9. 3M Aqua-Pure AP110-3C Whole House Water Filter

    AP110-3C 3M Aqua-Pure Water Filter Cartridge

    Sized 30 by 2 5/8 inches Learn More
    $40.99 Retail Price:  $49.44
  10. 9602 Moen Replacement Filter Cartridge for ChoiceFlo Faucet Systems

    9602 Moen Replacement Filter Cartridge for ChoiceFlo Faucet Systems

    Fits into the filtered Moen ChoiceFlo F7400 and 77200 Faucet Series Learn More
    $40.99 Retail Price:  $51.99
  11. HFPP-112-PR10 Pentek Big Blue Whole House 10 inch Filter Housing
  12. 3M Aqua-Pure APLPSF-PC Low Profile Shower Filter - Chrome
  13. 42632 Brita Chrome SMART OB39 64-Ounce Water Pitcher
  14. CTA-16 Desal Reverse Osmosis Membrane

    CTA-16 Desal Reverse Osmosis Membrane

    Fits 10 gallon per day reverse osmosis systems from various brands Learn More
    $41.99 Retail Price:  $50.59
  15. EV9601-00 Everpure 4C Replacement Filter Cartridge

    EV9601-00 Everpure 4C Replacement Filter Cartridge

    Fits Everpure filter heads including models QL1, QL2, QL3, and QL3B Learn More
    $41.99 Retail Price:  $45.99
  16. TW30-1812-36 Filmtec Reverse Osmosis Membrane

    TW30-1812-36 Filmtec Reverse Osmosis Membrane

    Fits 36 gallon per day reverse osmosis systems from various brands Learn More
    $41.99 Retail Price:  $48.29
  17. 3US-AS01 Filtrete Undersink Filter System

    3US-AS01 Filtrete Undersink Filter System

    $41.99 Retail Price:  $50.59
  18. FXHTC GE SmartWater Whole House Filter Replacement Cartridge

    FXHTC GE SmartWater Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $41.99 Retail Price:  $42.54
  19. GXULQR GE Undersink Water Filter Replacement Cartridge

    GXULQR GE Undersink Water Filter Replacement Cartridge

    Fits the GE GXULQ and GNULQ Systems Learn More
    $41.99 Retail Price:  $43.69
  20. HFPP-34-PR-10 Pentek Big Blue Whole House 10 inch Filter Housing
  21. PCC-1 Pentek Undersink Filter Replacement Cartridge

    PCC-1 Pentek Undersink Filter Replacement Cartridge

    Fits Pentek standard water filter housings Learn More
    $41.99 Retail Price:  $53.23
  22. VIH-34-PR10 Pentek Whole House Valve-in-Head 10 inch Filter Housing
  23. QMP602 QMP Countertop Water Filter System

    QMP602 QMP Countertop Filter System

    Fits standard kitchen faucets Learn More
    $41.99 Retail Price:  $45.99
  24. 47-55711G2 Water Factory Systems Whole House Replacement Filter Cartridge

    47-55711G2 Water Factory Systems Whole House Replacement Filter Cartridge

    Fits 3M Cuno Water Factory FaucetMATE FM-2 Lead Plus and FM-350 DWS systems Learn More
    $41.99 Retail Price:  $52.89
  25. MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More
    $41.99 Retail Price:  $52.89

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