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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. FXWTC GE Comparable Whole House Water Filter 2-Pack by Tier1
  2. WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    WB-20-W Harmsco Pleated Commercial Water Filter Cartridge

    Fits most standard 10-inch x 2.5-inch housings Learn More
    $10.99 MSRP:  $14.99
  3. DuPont WFPTC100X Water Pitcher Replacement Cartridge High Protection

    DuPont WFPTC100X Water Pitcher Replacement Cartridge High Protection

    Fits the DUPONT-WPT100XW, DUPONT-WFPT075X, DUPONT-WFPT200X DuPont Water Filter Pitchers Learn More
    $10.99 MSRP:  $15.99
  4. AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    AWP117 Viqua Carbon Block Filter for S2Q-DWS UV System

    For use with Viqua UltraViolet Disinfection Systems requiring 10 x 2.5-inch filter pre-treatment Learn More
    $10.99 MSRP:  $15.99
  5. Hydronix SPC-45-1020 Pleated Sediment Water Filter

    SPC-45-1020 Hydronix Pleated Sediment Water Filter (10 in x 4.5 in, 20 Micron)

    Fits into systems that use the Liquatec SPF-45-1020, Pentek 255491-43 and Watts FM-BB-10-20 water filters Learn More

    As Low As $10.66 Per Filter

  6. EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    EPM-20 Pentek Comparable Whole House Water Filter by Tier1

    Fits standard 20 x 2.5-inch housings Learn More
    $11.99 MSRP:  $20.99
  7. AP-GRMB-05PP-20UB Whole House Replacement Filter by 3M Aqua-Pure

    3M Aqua-Pure AP-GRMB-05PP-20 Whole House Water Filter Replacement

    Fits most standard 20-inch x 2.5-inch housings Learn More
    $11.99 MSRP:  $14.34
  8. AP-GRMB-10PP-20UB Whole House Replacement Cartridge by 3M Aqua-Pure

    AP-GRMB-10PP-20UB Whole House Replacement Filter by 3M Aqua-Pure

    Fits most standard 20-inch x 2.5-inch housings Learn More
    $11.99 MSRP:  $14.34
  9. AP-GRMB-20PP-20UB Whole House Water Filter Replacement Cartridge

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

    Fits most standard 20 inch x 2 1/2 inch housings Learn More
    $11.99 MSRP:  $14.34
  10. 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 MSRP:  $14.34
  11. D-25 Culligan Under Sink Water Filter

    D-25 Culligan Under Sink Water Filter

    Fits under sink filter systems that use 10 x 2.5-inch filters Learn More
    $11.99 MSRP:  $16.99
  12. K2528-KK Omnipure GAC Inline Water Filter

    K2528-KK Omnipure GAC Inline Water Filter

    Fits standard 3/8-inch water lines Learn More
    $11.99 MSRP:  $17.99
  13. Hydronix SPC-45-1030 Sediment Water Filter - Pleated

    SPC-45-1030 Hydronix Pleated Sediment Water Filter

    Sized 9 7/8 inches by 4.5 inches, 30 micron Learn More

    As Low As $11.00 Per Filter

  14. Pentek EP-10 Replacement Water Filter Cartridge

    Pentek EP-10 Filter Cartridge Replacement

    Fits most housings that accept standard 10-inch x 2.5-inch water filter cartridges Learn More

    As Low As $7.80 Per Filter

  15. Pentek P1-20 Whole House Water Filter Replacement Cartridge

    Pentek P1-20 Sediment Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 20-inch x 2 1/2-inch replacement filter cartridges Learn More

    As Low As $9.75 Per Filter

  16. TO1SS OmniFilter Whole House Water Filter

    TO1SS OmniFilter Whole House Water Filter Replacement Cartridge

    Designed to fit into any brand of whole house water filtration system that accepts standard 9 3/4 x 2 1/2 inch cartridges Learn More

    As Low As $10.33 Per Filter

  17. WS-21 Water Sentinel Misting System Replacement Filter

    WS-21 Water Sentinel Misting System Filter

    Regular Price: $12.99

    Special Price: $12.05

  18. 67401 Aquamira Water Purifier Tablets (24-Pack)
  19. DGD-5005 Pentek Whole House Filter Cartridge

    Pentek DGD-5005 Whole House Water Filter Replacement Cartridge

    Fits Pentek Big Blue and other heavy-duty filter housings Learn More

    As Low As $9.60 Per Filter

  20. P5-20BB Tier1 Sediment Water Filter

    P5-20BB Tier1 Whole House Sediment Water Filter

    Fits filtration system housings that accept 20 x 4.5 inch cartridges Learn More

    As Low As $11.00 Per Filter

  21. F2-WHITE Instapure Essentials Faucet Filter System - White

    F2-WHITE Instapure Essentials Faucet Filter System - White

    Fits most standard kitchen water faucets Learn More
    $12.99 MSRP:  $17.24
  22. RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    RS6 OmniFilter Comparable Whole House Water Filter by Tier1

    Fits OmniFilter RS6, OmniFilter RS6-R-01, OmniFilter RS6-R-02 and most standard 10-inch housings Learn More
  23. Pentek 255579-43 Inline Sediment Water Filter Replacement

    Pentek 255579-43 Inline Sediment Water Filter Replacement

    Fits directly into 1/4-inch copper or plastic water lines Learn More
    $12.99 MSRP:  $19.99
  24. 22160 Triton Replacement Sediment Filter Cartridge by Hydrologic

    22160 10-inch by 2.5-inch Triton Replacement Sediment Filter Cartridge by Hydrologic

    Fits most standard 10 inches x 2.5 inch housings Learn More
    $12.99 MSRP:  $17.99
  25. K2586-KK Omnipure Inline Water Filter

    K2586-KK Omnipure Inline Water Filter

    Fits standard 3/8-inch copper and plastic water lines Learn More
    $12.99 MSRP:  $17.99

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