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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.

44 Item(s)

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  • 22110 Hydrologic SmallBoy Replacement Carbon Filter - Green
  • K5520SS Omnipure Inline GAC Filter Cartridge

    K5520SS Omnipure Inline GAC Water Filter Cartridge

    $19.05 Retail Price:  $27.59
  • 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    $59.99 Retail Price:  $64.99
  • AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    $10.99 Retail Price:  $15.99
  • Pentek EP-10 Replacement Water Filter Cartridge

    EP-10 Pentek Replacement Filter Cartridge

    As Low As $7.80 Per Filter

  • EP10-10 Tier1 Carbon Block Water Filter

    EP10-10 Tier1 Carbon Block Water Filter

    As Low As $5.20 Per Filter

  • EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    As Low As $3.82 Per Filter

  • EP5-20 Tier1 Carbon Block Water Filter

    EP5-20 Tier1 Carbon Block Water Filter

    As Low As $11.04 Per Filter

  • CBC-10 Pentek Replacement Water Filter
  • Pentek CFB-PB10 Lead & Cyst Carbon Filter

    Pentek CFB-PB10 Lead & Cyst Carbon Filter

    $13.99 Retail Price:  $17.12
  • Pentek SCBC-10 Silvered Carbon Block

    Pentek SCBC-10 Silvered Carbon Block

    $22.99 Retail Price:  $24.71
  • CB3 OmniFilter Undersink Filter Replacement Cartridge
  • FXUVC GE SmartWater Undersink Filter Replacement Cartridge
  • CB-25-1005 Hydronix Replacement Filter Cartridge
  • 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
  • P-250 Pentek Undersink Filter Set

    P-250 Pentek Undersink Filter Set

    $23.99 Retail Price:  $28.99
  • P-250A Pentek Undersink Filter Set

    P-250A Pentek Undersink Filter Set

    $23.99 Retail Price:  $29.13
  • MAXETW-975 Watts C-MAX Replacement Filter Cartridge
  • MAXPB-975 Watts C-MAX Replacement Filter Cartridge

    MAXPB-975 Watts C-MAX Water Filter Cartridge

    $17.99 Retail Price:  $20.69
  • MAXVOC-975 Watts C-MAX Replacement Filter Cartridge

    MAXVOC-975 Watts C-MAX Water Filter Cartridge

    $18.99 Retail Price:  $22.99
  • WHKF-DB1 Whirlpool Undersink Replacement Filter Cartridge
  • MATRIKX-5-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  • PLEKX-10-10 KX Technologies PlekX Whole House Filter Replacement Cartridge
  • E5515-P Omnipure Replacement Filter Cartridge

    E5515-P Omnipure Replacement Filter Cartridge

    $25.99 Retail Price:  $31.04
  • E5520 Omnipure Replacement Filter Cartridge

    E5520 Omnipure Replacement Filter Cartridge

    $21.99 Retail Price:  $26.44
  • K5515-BB Omnipure Lead Cyst Inline Filter

    K5515-BB Omnipure Lead Cyst Inline Filter

    $23.99 Retail Price:  $25.29
  • K5520P-JJ Omnipure Inline Phosphate Filter

    K5520P-JJ Omnipure Inline Phosphate Filter

    $19.99 Retail Price:  $27.59
  • OMB934-1L Omnipure Alpha Series Undersink Filter Replacement Cartridge
  • Q5515 Omnipure Water Filter

    Q5515 Omnipure Water Filter

    $17.99 Retail Price:  $20.34
  • Q5515-P Omnipure Replacement Filter Cartridge

    Q5515-P Omnipure Replacement Filter Cartridge

    $28.99 Retail Price:  $35.64
  • CBU-10 Pentek Whole House Filter Replacement Cartridge

    CBU-10 Pentek Whole House Filter Replacement Cartridge

    $19.99 Retail Price:  $21.95
  • CCBC-10 Pentek Undersink Filter Replacement Cartridge

    CCBC-10 Pentek Undersink Filter Replacement Cartridge

    $18.99 Retail Price:  $19.31
  • CEP-10E Pentek Replacement Filter Cartridge

    CEP-10E Pentek Replacement Filter Cartridge

    $12.99 Retail Price:  $16.34
  • CFB-Plus10 Pentek Replacement Filter Cartridge

    CFB-Plus10 Pentek Replacement Water Filter Cartridge

    $9.99 Retail Price:  $14.13
  • CB-25-1010 Hydronix Carbon Water Filter Replacement

    CB-25-1010 Hydronix Carbon Water Filter Replacement

    $6.99 Retail Price:  $10.34
  • CB-25-1001 Hydronix Carbon Water Filter

    CB-25-1001 Hydronix Carbon Water Filter

    $9.99 Retail Price:  $13.79
  • K5515-JJ Omnipure Inline Water Filter

    K5515-JJ Omnipure Inline Water Filter

    $23.99 Retail Price:  $29.89
  • K5520-BB Omnipure Carbon Block Inline Filter

    K5520-BB Omnipure Carbon Block Inline Filter

    $22.99 Retail Price:  $28.74
  • KDF55-10 Tier1 Water Filter

    KDF55-10 Tier1 Water Filter

    $23.99 Retail Price:  $27.34
  • HAC-10-LR-W Harmsco Chlorine and Lead Removal Whole House Filter

44 Item(s)

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