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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 83 total

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  • 3M Aqua-Pure AP110-2 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP110-2C Whole House Water Filter Cartridge

    AP110-2C 3M Aqua-Pure Whole House Water Filter Cartridge

    $19.99 Retail Price:  $25.86
  • 3M Aqua-Pure AP111-2 Whole House Water Filter
  • CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    $14.99 Retail Price:  $17.34
  • SDC-25-2005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-25-2010 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-25-2020 Hydronix Whole House Replacement Sediment Filter Cartridge
  • CFBC-20 Pentek Replacement Filter Cartridge

    CFBC-20 Pentek Replacement Water Filter Cartridge

    $23.49 Retail Price:  $29.31
  • FLOPLUS-20 Pentek Replacement Filter Cartridge

    FLOPLUS-20 Pentek Replacement Filter Cartridge

    $28.99 Retail Price:  $31.84
  • GAC-20 Pentek Replacement Filter Cartridge

    GAC-20 Pentek Replacement Filter Cartridge

    $21.99 Retail Price:  $23.56
  • PCF1-20MB Pentek Whole House Filter Replacement Cartridge
  • PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge
  • PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge
  • WS-20 Pentek Water Softening Filter

    WS-20 Pentek Water Softening Filter

    $26.99 Retail Price:  $35.64
  • PX01-20 Purtrex Replacement Filter Cartridge

    PX01-20 Purtrex Replacement Water Filter Cartridge

    $7.99 Retail Price:  $10.34
  • PX05-20 Purtrex Replacement Water Filter

    PX05-20 Purtrex Replacement Water Filter

    $4.99 Retail Price:  $9.19
  • PX10-20 Purtrex Replacement Filter Cartridge

    PX10-20 Purtrex Replacement Water Filter

    $6.99 Retail Price:  $9.19
  • PX20-20 Purtrex Replacement Filter Cartridge

    PX20-20 Purtrex Replacement Water Filter

    $4.99 Retail Price:  $8.04
  • PX75-20 Purtrex Replacement Filter Cartridge

    PX75-20 Purtrex Replacement Water Filter Cartridge

    $4.99 Retail Price:  $8.04
  • KDF55-20 Tier1 Replacement Filter Cartridge

    KDF55-20 Tier1 Replacement Filter Cartridge

    Regular Price: $87.99

    Special Price: $55.05

  • FPMB20-20 Watts Flo-Pro Whole House Replacement Filter Cartridge
  • FPMB5-20 Watts Flo-Pro Replacement Filter Cartridge

    FPMB5-20 Watts Flo-Pro Water Filter Cartridge

    $5.99 Retail Price:  $6.89
  • GX01-20 Hytrex Replacement Filter Cartridge

    GX01-20 Hytrex Water Filter Cartridge

    $8.99 Retail Price:  $12.64
  • GX03-20 Hytrex Replacement Filter Cartridge

    GX03-20 Hytrex Replacement Water Filter Cartridge

    Regular Price: $8.99

    Special Price: $8.05

  • GX05-20 Hytrex Replacement Filter Cartridge

    GX05-20 Hytrex Replacement Water Filter Cartridge

    $9.99 Retail Price:  $11.49
  • GX10-20 Hytrex Replacement Filter Cartridge

    GX10-20 Hytrex Water Filter Cartridge

    $7.99 Retail Price:  $11.49
  • GX20-20 Hytrex Replacement Filter Cartridge

    GX20-20 Hytrex Water Filter Cartridge

    $7.99 Retail Price:  $11.49
  • GX50-20 Hytrex Replacement Filter Cartridge

    GX50-20 Hytrex Water Filter Cartridge

    $7.99 Retail Price:  $11.49
  • MATRIKX-1-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • MATRIKX-5-20 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • CBC-20 Pentek Replacement Filter Cartridge

    CBC-20 Pentek Replacement Filter Cartridge

    $25.99 Retail Price:  $35.64
  • CFB-Plus20 Pentek Replacement Filter Cartridge

    CFB-Plus20 Pentek Replacement Water Filter Cartridge

    $16.99 Retail Price:  $21.26
  • ECP1-20 Pentek Replacement Filter Cartridge

    ECP1-20 Pentek Replacement Filter Cartridge

    $15.99 Retail Price:  $17.70
  • ECP50-20 Pentek Replacement Filter Cartridge

    ECP50-20 Pentek Replacement Filter Cartridge

    $14.99 Retail Price:  $17.70
  • SPC-25-2020 Hydronix Pleated Sediment Water Filter

    SPC-25-2020 Hydronix Pleated Sediment Water Filter

    $10.99 Retail Price:  $16.09
  • SPC-25-2005 Hydronix Pleated Sediment Water Filter

    SPC-25-2005 Hydronix Pleated Sediment Water Filter

    $10.99 Retail Price:  $16.09
  • SPC-25-2001 Hydronix Pleated Sediment Water Filter

    SPC-25-2001 Hydronix Pleated Sediment Water Filter

    $12.99 Retail Price:  $16.09
  • SDC-25-2001 Hydronix Sediment Water Filter Cartridge

    SDC-25-2001 Hydronix Sediment Water Filter Cartridge

    $6.99 Retail Price:  $8.04
  • 22043 KDF Hydrologic Carbon Pre-Filter For Evolution-RO1000
  • CQE-RC-04014 Crystal Quest Carbon Block Water Filter Cartridge
  • CQE-RC-04015 Crystal Quest Reusable Pleated Water Filter

    CQE-RC-04015 Crystal Quest Reusable Pleated Water Filter

    $21.99 Retail Price:  $32.19
  • CQE-RC-04016 Crystal Quest Multi Stage PLUS Water Filter Cartridge
  • CQE-RC-04020 Crystal Quest Nitrate Water Filter Cartridge
  • CB-25-2001 Hydronix Carbon Water Filter Replacement

    CB-25-2001 Hydronix Carbon Water Filter Replacement

    Regular Price: $17.99

    Special Price: $16.05

  • SPC-25-2010 Hydronix Pleated Sediment Water Filter

    SPC-25-2010 Hydronix Pleated Sediment Water Filter

    Regular Price: $10.99

    Special Price: $6.05

Items 1 to 48 of 83 total

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