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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. HALSEY-TAYLOR-55898C

    HALSEY-TAYLOR-55898C

    $88.99 Retail Price:  $96.24
  2. 22105 Hydrologic SmallBoy Sediment Filter

    22105 Hydrologic SmallBoy Sediment Filter

    Fits 10 inch by 2.5 inch filtration system housings Learn More
    $8.99 Retail Price:  $12.06
  3. HYDROLOGIC-22110
  4. OMNIPURE-K5520SS

    OMNIPURE-K5520SS

    $19.05 Retail Price:  $27.59
  5. AF-20-3690-BB Aries Replacement Whole House Fluoride Removal Filter

    AF-20-3690-BB Aries Whole House Fluoride Removal Filter

    Fits most housings that accept 20 inch x 4.5 filter cartridges Learn More
    $126.05 Retail Price:  $171.99
  6. TIER1-C5-20
  7. TIER1-RFC20-934
  8. HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    HAC-10-W Harmsco Activated Carbon Water Filter Cartridge

    Fits most standard 10-inch filter housings. Learn More
    $13.99 Retail Price:  $19.99
  9. EV9693-01 Everpure Chloramine Reduction Water Filter Replacement
  10. AF-10-1053 Aries Specialty Cartridge Hydrogen Sulfide Removal

    AF-10-1053 Aries Specialty Cartridge 10-inch x 2.5-inch Hydrogen Sulfide Removal

    Fits standard 10 x 2.5-inch filter housings Learn More
    $18.99 Retail Price:  $22.99
  11. 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    Fits 1/4-inch inline shut-off valve Learn More
    $59.99 Retail Price:  $64.99
  12. RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    Fits standard slim 10 x 2.5-inch water filter housings Learn More
    $23.99 Retail Price:  $27.99
  13. TIER1_C5_20_2_PACK
  14. KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter

    KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter

    Fits Culligan AC15, AC30, LC50, and H83 Reverse Osmosis systems Learn More
    $6.99 Retail Price:  $10.99
  15. RWC-5 American Plumber Undersink Filter Replacement Cartridge

    RWC-5 American Plumber Undersink Filter Replacement Cartridge

    Fits most standard size water filter housings Learn More
  16. AMERICAN-PLUMBER-W5CIP478

    AMERICAN-PLUMBER-W5CIP478

    $16.99 Retail Price:  $17.24
  17. WICA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings

    WICA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings

    Fits any 1/4-inch water line Learn More
    $14.09 Retail Price:  $18.50
  18. IL-IM-01 3M Aqua-Pure Inline Water Filter
  19. 750R-D Culligan Level 1 Undersink RV and Marine Icemaker and Drinking Water Filter

    750R-D Culligan Level 1 Undersink RV and Marine Icemaker and Drinking Water Filter

    Fits Culligan SY-750s, RV-750, IC-750, SY-1000, SY-1000s, RV-1000, and IC-1000 filter systems Learn More
    $17.99
  20. CULLIGAN-IC-100-D

    CULLIGAN-IC-100-D

    $12.99 Retail Price:  $16.78
  21. IC-750 Culligan Inline Filter

    IC-750 Culligan Inline Filter

    Fits standard 1/4-inch water lines Learn More
  22. CULLIGAN-IC-EZ-1

    CULLIGAN-IC-EZ-1

    $20.99 Retail Price:  $27.13
  23. RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-1 Culligan Level 1 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-1, US-EZ-1, and RV-EZ-1 Learn More
    $15.99 Retail Price:  $22.99
  24. RV-EZ-1 Culligan Level 1 Easy-Change RV Inline Filter System
  25. TS-500 Culligan Large Capacity Inline Filter Replacement Cartridge

Items 1 to 25 of 101 total

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