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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.

24 Item(s)

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  1. PX01-20 Purtrex Replacement Filter Cartridge

    PX01-20 Purtrex Replacement Water Filter Cartridge

    Fits filtration housing systems that use 2.5-inch x 20-inch cartridges Learn More
    $7.99 Retail Price:  $10.34
  2. PX01-30 Purtrex Sediment Filter Cartridge

    PX01-30 Purtrex Sediment Filter Cartridge

    Fits filtration system housing that use 2.5-inch x 30-inch replacement filters Learn More
    $10.49 Retail Price:  $14.36
  3. PX01-9-78 Purtrex Replacement Filter Cartridge

    PX01-9-78 Purtrex Replacement Filter Cartridge

    For use in filtration system housings that use 2.5-inch x 10-inch replacement filters Learn More
    $4.99 Retail Price:  $8.04
  4. PX05-20 Purtrex Replacement Filter Cartridge

    PX05-20 Purtrex Replacement Water Filter

    For filtration system housings that use 2.5-inch x 20-inch replacement water filters Learn More
    $4.99 Retail Price:  $9.19
  5. PX05-4-78 Purtrex Replacement Filter Cartridge

    PX05-4-78 Purtrex Replacement Water Filter Cartridge

    For use in filtration system housings that accept 2.5-inch x 5-inch replacement filters Learn More
    $2.99 Retail Price:  $5.74
  6. PX05-9-78 Purtrex Replacement Filter Cartridge

    PX05-9-78 Purtrex Replacement Water Filter

    For use in compact filtration system housings that use 2.5 x 10 inch filters Learn More
    $6.99 Retail Price:  $8.04
  7. PX10-20 Purtrex Replacement Filter Cartridge

    PX10-20 Purtrex Replacement Water Filter

    Fits industry standard filtration system housings that use 2.5-inch x 20-inch replacement filters Learn More
    $6.99 Retail Price:  $9.19
  8. PX10-40 Purtrex Replacement Filter Cartridge

    PX10-40 Purtrex Replacement Water Filter

    Fits industry standard filtration system housings that use 2.5-inch x 40-inch filters Learn More
    $12.99 Retail Price:  $14.94
  9. PX10-9-78 Purtrex Replacement Filter Cartridge

    PX10-9-78 Purtrex Replacement Water Filter

    Fits compact water filtration system housings that use 2.5-inch x 10-inch filters Learn More
    $4.99 Retail Price:  $8.04
  10. PX20-20 Purtrex Replacement Filter Cartridge

    PX20-20 Purtrex Replacement Water Filter

    For industry standard filtration system housings that use 2.5-inch x 20-inch replacement filters Learn More
    $4.99 Retail Price:  $8.04
  11. PX20-9-78 Purtrex Replacement Filter Cartridge

    PX20-9-78 Purtrex Water Filter Cartridge

    Fits compact water filtration system housings that use 2.5-inch x 10-inch replacement filters Learn More
    $3.99 Retail Price:  $5.74
  12. PX30-20 Purtrex Replacement Filter Cartridge

    PX30-20 Purtrex Replacement Water Filter Cartridge

    For filtration system housings that use 2.5-inch x 20-inch filters Learn More
    $6.99 Retail Price:  $9.19
  13. PX30-9-78 Purtrex Replacement Filter Cartridge

    PX30-9-78 Purtrex Replacement Water Filter Cartridge

    Fits filtration housings that use 2.5-inch x 10-inch replacement water filters Learn More
    $3.99 Retail Price:  $6.89
  14. PX50-9-78 Purtrex Replacement Filter Cartridge

    PX50-9-78 Purtrex Replacement Water Filter

    Fits industry standard compact filtration system housings that use 2.5-inch x 10-inch replacement filters Learn More
    $4.99 Retail Price:  $6.89
  15. PX75-20 Purtrex Replacement Filter Cartridge

    PX75-20 Purtrex Replacement Water Filter Cartridge

    Fits industry standard water filtration system housings that use 2.5-inch x 20-inch cartridges Learn More
    $4.99 Retail Price:  $8.04
  16. PX05-40 Purtrex Whole House Replacement Sediment Filter Cartridge

    PX05-40 Purtrex Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept standard 40-inch x 2.5 inch water filter cartridges Learn More
    $12.99 Retail Price:  $17.24
  17. Purtrex PX01-4-78 Polypropylene Sediment Filter

    Purtrex PX01-4-78 Polypropylene Sediment Filter

    Fits any standard 5 inch by 2.5 inch housings Learn More
    $4.99 Retail Price:  $5.16
  18. Pentek PX03-20 Polypropylene Sediment Filter

    Purtrex PX03-20 Polypropylene Sediment Filter

    Fits any standard 20 inch by 2.5 inch housings Learn More
    $19.99 Retail Price:  $22.34
  19. Purtrex PX03-9-78 Polypropylene Sediment Filter

    Purtrex PX03-9-78 Polypropylene Sediment Filter

    Fits any standard 10 inch by 2.5 inch housings Learn More
    $4.99 Retail Price:  $6.89
  20. PURTREX PX05-29-14 Sediment Filter

    PURTREX PX05-29-14 Sediment Filter

    Fits any standard 30 inch by 2.5 inch housings Learn More
    $11.99 Retail Price:  $14.34
  21. Purtrex PX05-30 Polypropylene Sediment Filter

    Purtrex PX05-30 Polypropylene Sediment Filter

    Fits any standard 30 inch x 2.5 inch housings Learn More
    $13.99 Retail Price:  $16.34
  22. 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
  23. 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
  24. Purtrex PX75-9-78 Polypropylene Sediment Filter

    Purtrex PX75-9-78 Polypropylene Sediment Filter

    Fits any standard 10 inch by 2.5 inch size housings Learn More
    $3.99 Retail Price:  $5.74

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