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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.

45 Item(s)

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  • C1-20 Pentek Comparable Whole House Water Filter by Tier1 (2-Pack)
  • AP327 3M Aqua-Pure Water Filter Replacement Cartridge
  • DW-200-R American Plumber Undersink Filter Replacement Cartridge
  • RWC-5 American Plumber Undersink Filter Replacement Cartridge
  • 3M Aqua-Pure AP117 Whole House Water Filter Cartridge
  • 3M Aqua-Pure AP200 Under Sink Water Filter

    AP200 3M Aqua-Pure Undersink Water Filtration System

    Regular Price: $104.99

    Special Price: $87.05

  • 3M Aqua-Pure AP317 Water Filter Replacement Cartridge
  • 3M Aqua-Pure AP517 Water Filter Replacement Cartridge
  • 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    $25.99 Retail Price:  $34.49
  • 3M Aqua-Pure APS117 Whole House Water Filter Replacement Cartridge
  • 40624 Camco Evo Replacement Filter Cartridge

    40624 Camco Evo Replacement Water Filter Cartridge

    $18.99 Retail Price:  $19.54
  • P1012581 Culligan Undersink Replacement Filter Cartridge
  • CFS117-S Cuno Whole House Filter Replacement Cartridge

    CFS117-S Cuno Whole House Filter Replacement Cartridge

    $32.05 Retail Price:  $40.24
  • CFS517 Cuno Whole House Filter Replacement Cartridge

    CFS517 Cuno Whole House Filter Replacement Cartridge

    Regular Price: $76.99

    Special Price: $62.05

  • CFS8110 Cuno Whole House Filter Replacement Cartridge

    CFS8110 Cuno Whole House Filter Replacement Cartridge

    $56.99 Retail Price:  $61.97
  • 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
  • 4WH-HDGAC-F01 Filtrete Replacement Filter Cartridge

    4WH-HDGAC-F01 3M Filtrete Water Filter Cartridge

    $32.99 Retail Price:  $41.39
  • ICF-10 Hydronix Inline Coconut Carbon Filter

    ICF-10 Hydronix Inline Coconut Carbon Filter

    $7.05 Retail Price:  $9.19
  • ICF-10Q Hydronix Inline Coconut Carbon Filter

    ICF-10Q Hydronix Inline Coconut Carbon Filter

    $6.99 Retail Price:  $10.34
  • ICF-10Q38 Hydronix Inline Coconut Carbon Filter

    ICF-10Q38 Hydronix Inline Coconut Carbon Filter

    $8.99 Retail Price:  $11.49
  • ICF-2512 Hydronix Inline Coconut Carbon Filter

    ICF-2512 Hydronix Inline Coconut Carbon Filter

    $23.99 Retail Price:  $26.34
  • ICF-6 Hydronix Inline Coconut Carbon Filter

    ICF-6 Hydronix Inline Coconut Carbon Filter

    $5.99 Retail Price:  $9.19
  • ICF-6Q Hydronix Inline Coconut Carbon Filter

    ICF-6Q Hydronix Inline Coconut Carbon Filter

    $6.99 Retail Price:  $10.34
  • QC10-TSGACR Pentek Undersink Quick-Change Replacement Filter Cartridge
  • UDS-10EX1 Pentek Whole House Filter Replacement Cartridge
  • 47-55704G2 Water Factory Systems Replacement Filter Cartridge
  • 47-55706G2 Water Factory Systems Whole House Replacement Filter Cartridge
  • AICRO-JGK Watts Inline Filter Cartridge
  • MATRIKX-CTO2-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  • 32-250-125-050 KX Technologies Replacement Filter Cartridge
  • S7028 Microline Replacement Filter Cartridge

    S7028 Microline Replacement Filter Cartridge

    $17.99 Retail Price:  $20.69
  • CL10ROT33-B Omnipure Inline Filter

    CL10ROT33-B Omnipure Inline Filter

    $10.99 Retail Price:  $13.79
  • CL10ROT33-C Omnipure Inline Filter

    CL10ROT33-C Omnipure Inline Filter

    $9.99 Retail Price:  $13.79
  • CL10ROT40-B Omnipure Inline Coconut Carbon Filter

    CL10ROT40-B Omnipure Inline Coconut Carbon Filter

    $9.99 Retail Price:  $13.79
  • CL10ROT40-C Omnipure Inline Coconut Carbon Filter

    CL10ROT40-C Omnipure Inline Coconut Carbon Filter

    $8.99 Retail Price:  $12.64
  • CL6ROT33-B Omnipure Inline Filter

    CL6ROT33-B Omnipure Inline Filter

    $9.99 Retail Price:  $11.49
  • CL6ROT33-C Omnipure Inline Filter

    CL6ROT33-C Omnipure Inline Filter

    $7.99 Retail Price:  $11.49
  • DBC-10EX2 Pentek Replacement Filter Cartridge

    DBC-10EX2 Pentek Water Filter Cartridge Replacement

    $43.99 Retail Price:  $57.95
  • CL10ROT33-A Omnipure GAC Inline Water Filter

    CL10ROT33-A Omnipure GAC Inline Water Filter

    $10.99 Retail Price:  $14.94
  • 3M Aqua-Pure AP510 Water Filter System

    AP510 3M Aqua-Pure Water Filtration System

    $141.99 Retail Price:  $146.04
  • HDG-P117 Hydronix Replacement Water Filter

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