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When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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Learn more about our No Worries Guarantee

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.

29 Item(s)

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  • WFDWC20001 DuPont Universal Drinking Water Carbon Block Cartridge
  • WFDWC40001 DuPont Universal Drinking Water Carbon Block Cartridge
  • CB6 Multipure Aquaversa Comparable Water Filter: HDG-CB6-14 HydroGuard

    CB6 Comparable Water Filter: HDG-CB6-14 HydroGuard

    $29.99
    MSRP: $43.99
    Save 32%
  • 600R American Plumber Undersink Filter Replacement Cartridge
  • WIC-600 American Plumber Undersink Filter System

    WIC-600 American Plumber Undersink Filter System

    $55.99
    MSRP: $58.34
    Save 4%
  • C-COMPLETE 3M Aqua-Pure Undersink Water Filter
  • 01013029 Culligan Reverse Osmosis Filter Cartridge
  • 1000R-D Culligan Level 3 Undersink RV and Marine Icemaker and Drinking Water Filter
  • W9223026 Doulton Replacement Ceramic Filter
  • FQROPF GE Profile SmartWater Ultra Plus Reverse Osmosis Filter Set
  • FXULC GE SmartWater Undersink Filter Replacement Cartridge
  • FXUVC GE SmartWater Undersink Filter Replacement Cartridge
  • 1100R OmniFilter Quick Change Replacement Filter Cartridge
  • P-250A Pentek Undersink Filter Set

    P-250A Pentek Undersink Filter Set

    $23.99
    MSRP: $29.13
    Save 18%
  • QC10-CBR-JG14 Pentek Undersink Quick-Change Filter System

    QC10-CBR-JG14 Pentek Quick-Change Water Filter System

    $33.99
    MSRP: $35.41
    Save 4%
  • QC10-CBR-THREADED Pentek Undersink Quick-Change Filter System
  • QC10-CBRR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • 47-55707G2 Water Factory Systems Replacement Filter Cartridge
  • 9001 Moen Faucet Filter Replacement Cartridge - 1

    9001 Moen Faucet Filter Cartridge

    $67.99
    MSRP: $73.59
    Save 8%
  • 9601 Moen ChoiceFlo Faucet Filter Replacement Cartridge
  • R1100 OmniFilter Quick Change Inline Refrigerator Filter
  • K2515-JJ Omnipure Lead Cyst Inline Filter

    K2515-JJ Omnipure Lead Cyst Inline Filter

    $19.99
    MSRP: $25.29
    Save 21%
  • IC6-38Q Tier1 Inline Water Filter
  • RC-5 Rainshow’r Replacement Water Filter

    RC-5 Rainshow’r Replacement Water Filter

    $51.99
    MSRP: $65.99
    Save 21%
  • RC-0.5 Rainshow’r Replacement Water Filter

    RC-0.5 Rainshow’r Replacement Water Filter

    $92.99
    MSRP: $115.00
    Save 19%
  • 9602 Moen Replacement Filter Cartridge for ChoiceFlo Faucet Systems

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