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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. W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    W20CLHD20 American Plumber Whole House 20-inch Heavy Duty Filter Cartridge

    Fits American Plumber W2010-PR and W2015-PR and most other 20-inch heavy duty water filter housings Learn More
    $29.99 Retail Price:  $35.64
  2. W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge

    W30PEHD American Plumber Whole House Heavy Duty Filter Cartridge

    Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More
    $24.99 Retail Price:  $27.34
  3. W50PEHD American Plumber Whole House Heavy Duty Filter Cartridge

    W50PEHD American Plumber Whole House Heavy Duty Filter Cartridge

    Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More
    $24.99 Retail Price:  $27.34
  4. W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)

    W5CIP American Plumber Undersink Filter Replacement Cartridge (2-Pack)

    Fits American Plumber W38-PR and most standard size water filter housings Learn More
    $21.99 Retail Price:  $24.34
  5. 67015 Aquamira Filtered Water Bottle - 1

    Aquamira Filtered Water Bottle (#67015)

    $27.95 Retail Price:  $34.44
  6. 3M Aqua-Pure AP110-2 Whole House Water Filter Cartridge

    AP110-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $21.99 Retail Price:  $24.94
  7. 3M Aqua-Pure AP110-2C Whole House Water Filter Cartridge

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

    Fits 3M Aqua-Pure whole house water filtration systems that accept 20 x 2.5 inch filters Learn More
    $20.99 Retail Price:  $25.86
  8. 3M Aqua-Pure AP117 Whole House Water Filter Cartridge

    AP117 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $28.99 Retail Price:  $36.67
  9. AP117RO 3M Aqua-Pure Reverse Osmosis Filter

    AP117RO 3M Aqua-Pure Reverse Osmosis Filter

    For use in 3M Aqua-Pure reverse osmosis water filtration systems Learn More
    $23.99 Retail Price:  $30.23
  10. 3M Aqua-Pure AP124-3 Water Filter

    AP124-3 3M Aqua-Pure Replacement Water Filter

    Fits standard filtration system housings that accept 30-inch x 2.5-inch water filter cartridges Learn More
    $29.99 Retail Price:  $35.64
  11. 3M Aqua-Pure AP-250R Under Sink Water Filter

    AP-250R 3M Aqua-Pure Undersink Water Filter Cartridge

    Fits 3M Aqua-Pure undersink water filtration systems Learn More
    $29.99 Retail Price:  $41.39
  12. 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    Fits any 1/4-inch plastic or copper water line Learn More
    $25.99 Retail Price:  $34.49
  13. 3M Aqua-Pure APHF-RC Shower Filter Cartridges

    APHF-RC 3M Aqua-Pure Handheld Shower Filter Cartridge Set

    Fits 3M Aqua-Pure handheld filtered showerheads Learn More
    $25.99 Retail Price:  $33.34
  14. APLPSF-RC 3M Aqua-Pure Shower Filter Cartridge

    APLPSF-RC 3M Aqua-Pure Shower Filter Cartridge

    Fits 3M Aqua-Pure low-profile shower filtration systems Learn More
    $25.99 Retail Price:  $27.36
  15. APSH5-RC 3M Aqua-Pure 5-in-1 Shower Filter Cartridge

    APSH5-RC 3M Aqua-Pure 5-in-1 Shower Filter Cartridge

    Fits 3M Aqua-Pure 5-in-1 filtered showerheads Learn More
    $27.99 Retail Price:  $33.91
  16. AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    AF-10-3690 Aries Replacement Fluoride Filter Cartridge

    Fits most standard housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $27.99 Retail Price:  $32.19
  17. 42633 Brita On-Tap Faucet Filter System - Black / Chrome
  18. 42647 Brita AquaView AVFR-200 Faucet Filter Replacement Cartridge

    42647 Brita AquaView AVFR-200 Faucet Filter Replacement Cartridge

    Fits Brita AquaView faucet mounted water filter systems Learn More
  19. ATLANTIS-BLUE-PITCHER Brita 48-Ounce Water Pitcher
  20. 42617 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - Chrome

    42617 Brita On-Tap FR-200 Faucet Filter Replacement Cartridge - Chrome

    Fits all Brita "On-Tap" faucet mounted water filter systems (regardless of finish) Learn More
    $24.99 Retail Price:  $25.29
  21. 35507 Brita Classic OB01 48-Ounce Water Pitcher

    Brita Classic Water Filter Pitcher (48 Ounce, #OB01)

    Regular Price: $27.99

    Special Price: $22.05

  22. 42378 Brita Deluxe OB26 80-Ounce Water Pitcher
  23. 35503 Brita OB03 Pitcher Replacement Cartridge (3-Pack)

    35503 Brita OB03 Pitcher Replacement Cartridge (3-Pack)

    Fits all Brita pitchers, dispensers, and water coolers Learn More
    $23.99 Retail Price:  $29.89
  24. 42432 Brita OB03 Pitcher Replacement Cartridge (4-Pack)

    42432 Brita OB03 Pitcher Replacement Cartridge (4-Pack)

    Fits all Brita pitchers, dispensers, and water coolers Learn More
    $29.99 Retail Price:  $37.94
  25. 42629 Brita Slim OB11 40-Ounce Water Pitcher

Items 1 to 25 of 329 total

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