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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. 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
  2. 67001 Aquamira Water Bottle Replacement Filter Cartridge

    67001 Aquamira Water Bottle Replacement Filter Cartridge

    Fits Aquamira Filter Bottle or Nalgene Sport Bottle Learn More
  3. AP111 3M Aqua-Pure Whole House Filter Replacement Cartridge

    AP111 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits 3M Aqua-Pure whole house water filter systems Learn More
  4. KO100G2S Pentek Polypropylene Bag Filter

    KO100G2S Pentek Polypropylene Filter Bag

    Fits into Pentek Carbon Steel, Stainless Steel and Aluminum filtration system housings that accept #2 filter bags Learn More
    $10.99 Retail Price:  $12.98
  5. P25-20 Pentek Whole House Replacement Sediment Filter Cartridge

    P25-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept standard 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $13.34
  6. P5-30 Pentek Whole House Replacement Sediment Filter Cartridge

    P5-30 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept standard 30-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $14.13
  7. PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-1-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $11.72
  8. PD-5-20 Pentek Whole House Filter Replacement Cartridge

    PD-5-20 Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More
    $10.99 Retail Price:  $12.98
  9. PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge

    PD-50-20 Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $12.98
  10. PS20-20C Pentek Whole House Replacement Sediment Filter Cartridge

    PS20-20C Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $10.99 Retail Price:  $13.34
  11. 6570090 Tier1 Plastic Tank Ball Valve

    6570090 Tier1 Plastic Tank Ball Valve

    Fits 1/4-inch connections on water line and top of reverse osmosis tank Learn More
    $10.99
  12. Whirlpool WHKF-GAC Undersink Replacement Water Filter Cartridge

    WHKF-GAC Whirlpool Undersink Replacement Filter Cartridge

    Fits the Whirlpool WHKF-DUF Under Sink Filter Housing Learn More
    $10.99 Retail Price:  $20.34
  13. R2-2PK Instapure Essentials Faucet Filter Replacement Cartridge (2-Pack)

    R2-2PK Instapure Essentials Faucet Filter Replacement Cartridge (2-Pack)

    Fits the Instapure F2 Faucet Water Filter System Learn More
    $10.99 Retail Price:  $13.79
  14. 32-250-125-050 KX Technologies Replacement Filter Cartridge

    32-250-125-050 KX Technologies Replacement Filter Cartridge

    Fits most standard housings that accept 5-inch filters Learn More
    $10.99
  15. S7025 Microline Replacement Filter Cartridge

    S7025 Microline Replacement Filter Cartridge

    Fits Microline Clack reverse osmosis systems Learn More
    $10.99 Retail Price:  $14.94
  16. CL10ROT33-B Omnipure Inline Filter

    CL10ROT33-B Omnipure Inline Filter

    Fits standard 1/4-inch water lines Learn More
    $10.99 Retail Price:  $13.79
  17. ELF-DK7 Omnipure Filter Head

    ELF-DK7 Omnipure Filter Head

    Fits standard 3/8-inch water lines Learn More
    $10.99 Retail Price:  $16.09
  18. K2333-JJ Omnipure Inline Filter

    K2333-JJ Omnipure Inline Filter

    Fits standard 1/4-inch water lines Learn More
    $10.99 Retail Price:  $13.79
  19. CW-F Pentek String Wound Sediment Water Filter (9-7/8 in x 2-1/4 in)

    CW-F Pentek String Wound Sediment Water Filter (9-7/8 in x 2-1/4 in)

    Built to fit into whole house water filtration systems with 10-inch housings Learn More
    $10.99
  20. SPC-25-2020 Hydronix Pleated Sediment Water Filter

    SPC-25-2020 Hydronix Pleated Sediment Water Filter

    20 inches by 2.5 inches, 20 micron. Fits into systems that use Liquatec SPF-25-2020, Pentek 255487-43 and Watts FM-20-20 water filters Learn More
    $10.99 Retail Price:  $16.09
  21. SPC-25-2005 Hydronix Pleated Sediment Water Filter

    SPC-25-2005 Hydronix Pleated Sediment Water Filter

    20 inches by 2.5 inches, 5 micron. Fits into systems that use Liquatec SPF-25-2005, Pentek 255486-43 and Watts FM-5-20 water filters Learn More
    $10.99 Retail Price:  $16.09
  22. CL10ROT33-A Omnipure GAC Inline Water Filter

    CL10ROT33-A Omnipure GAC Inline Water Filter

    Sized 2 inches W x 10 inches L; 1/8 inch FPT Learn More
    $10.99 Retail Price:  $14.94
  23. SPC-25-2030 Hydronix Pleated Sediment Water Filter

    SPC-25-2030 Hydronix Pleated Sediment Water Filter

    30 micron filter, sized 20 x 2.5 inches Learn More
    $10.99 Retail Price:  $12.64
  24. Q5328 Omnipure Water Filter

    Q5328 Omnipure Water Filter

    Sized 2 1/2 x 6 inches with 20 x 50 mesh Learn More
    $10.99 Retail Price:  $14.94
  25. 00401538 Culligan String Wound Sediment Filter

    00401538 Culligan String Wound Sediment Filter

    Built for use in Culligan AC50, AC30, AC15, H83 whole house water filtration systems and H53 reverse osmosis systems Learn More

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