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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. SDC-45-2050 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-45-2050 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 4.5-inch filters Learn More
  2. CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1

    CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $5.99 Retail Price:  $9.99
  3. R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    R50-BB Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 5-inch housings Learn More
    $14.99 Retail Price:  $17.34
  4. W50PEHD American Plumber Comparable Whole House Water Filter by Tier1
  5. AP-GRMB-50PP-20UB Whole House Water Filter Replacement Cartridge

    3M Aqua-Pure AP-GRMB-50PP-20UB Whole House Water Filter Replacement

    Fits most standard 20 inch x 2 1/2 inch housings Learn More
    $11.99 Retail Price:  $14.34
  6.  WB-HB-20-50W Harmsco Pleated Commercial Water Filter Cartridge

    WB-HB-20-50W Harmsco Pleated Commercial Water Filter Cartridge

    Fits most standard 20 x 4.5-inch filter housings Learn More
    $27.99 Retail Price:  $37.99
  7. W50PEHD American Plumber Comparable Filter by Tier1 (6-Pack)
  8. SDC-45-1050 Hydronix Pleated Sediment Water Filter (6-Pack)

    SDC-45-1050 Hydronix Pleated Sediment Water Filter (6-Pack)

    Fits systems that use American Plumber WW50PEHD, Liquatec SPF-45-1050, Pentek 255492-43, Pentek 155053-43, Pentek R50-BB and Watts FM-BB-10-50 water filters Learn More

    $72.99

  9. SPC-45-2050 Hydronix 20 x 4.5 inch Pleated Sediment Water Filter 6pk

    SPC-45-2050 Hydronix 20 x 4.5 inch Pleated Sediment Water Filter 50 Micron (6-Pack)

    Fits into systems that use the Liquatec SPF-45-2050, Pentek 255496-43 and Watts FM-BB-50-20 water filters Learn More

    $112.99

  10. Hydronix SDC-25-4050 Polypropylene Sediment Filter

    Hydronix SDC-25-4050 Polypropylene Sediment Filter

    Standard 50 inch by 2.5 inch size fits many standard size filter housings Learn More
    $12.99 Retail Price:  $14.34
  11. Hydronix GX50-30 Polypropylene Sediment Filter

    Hydronix GX50-30 Polypropylene Sediment Filter

    Standard 30 inch x 2.5 inch size fits most standard filter housings Learn More
    $12.99 Retail Price:  $14.36
  12. Hytrex GX-50-9-78 Polypropylene Sediment Filter

    Hytrex GX-50-9-78 Polypropylene Sediment Filter

    Standard 10 inch by 2.5 inch size and double open end cap style fits many common filter housings Learn More
    $5.99 Retail Price:  $7.12
  13. Pentek BPHE-410-50 Polypropylene High Efficiency Filter Bag

    Pentek BPHE-410-50 Polypropylene High Efficiency Filter Bag

    Fits the Pentek PBH-410 series filter bag housing Learn More
    $4.99 Retail Price:  $5.62
  14. Pentek PO50G3S Polypropylene Filter Bag

    Pentek PO50G3S Polypropylene Filter Bag

    Standard #3 size with 4 1/8 inch diameter and 8 inch length. Fits many standard filter bag housings Learn More
    $5.99 Retail Price:  $6.89
  15. Purtrex PX50-20 Polypropylene Sediment Filter

    Purtrex PX50-20 Polypropylene Sediment Filter

    Fits any standard 20 inch by 2.5 inch housings Learn More
    $5.99 Retail Price:  $7.92
  16. Purtrex PX50-30 Polypropylene Sediment Filter

    Purtrex PX50-30 Polypropylene Sediment Filter

    Fits any standard 30 inch by 2.5 inch housings Learn More
    $9.99 Retail Price:  $11.49
  17. 3M Aqua-Pure AP-GRMB-50PP-10UB

    3M Aqua-Pure AP-GRMB-50PP-10UB Polypropylene Sediment Filter

    Standard 10 inch by 2.5 inch size fits many standard size filter housings Learn More
    $5.99 Retail Price:  $9.19
  18. W50PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W50PE American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $16.99 Retail Price:  $18.39
  19. 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
  20. W50W American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    W50W American Plumber Whole House Sediment Filter Cartridge (2-Pack)

    Fits American Plumber W34-PR, WC34-PR and WVC34 and most standard size water filter housings Learn More
    $14.99 Retail Price:  $17.34
  21. 3M Aqua-Pure AP124 Whole House Water Filter Cartridge

    AP124 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
    $13.99 Retail Price:  $17.24
  22. 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
  23. 3M Aqua-Pure AP814 Whole House Water Filter

    AP814 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $31.99 Retail Price:  $33.34
  24. 3M Aqua-Pure AP814-2 Whole House Water Filter

    AP814-2 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
    $57.99 Retail Price:  $65.54
  25. PR-1 Culligan Pitcher Replacement Cartridge

    PR-1 Culligan Water Filter Pitcher Replacement Cartridge

    Fits Culligan PIT-1, OP-1, GP-1, WP-1, WFR1 and WFJ2 water filter pitchers Learn More
    $6.99 Retail Price:  $12.52

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