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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-45-2010 Hydronix Comparable Sediment Water Filter by Tier1

    SDC-45-2010 Hydronix Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More
    $19.99 Retail Price:  $32.99
  2. 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
  3. Viqua VP600 Cobalt Series UltraViolet Disinfection System

    Viqua VP600 Cobalt Series UltraViolet Disinfection System (30 gpm)

    Fits any standard 1-inch inlet/outlet Learn More
    $785.99 Retail Price:  $788.34
  4. Viqua VP950 UltraViolet Water Disinfection System

    Viqua VP950 UltraViolet Water Disinfection System (46 gpm)

    Fits any standard 1-1/2-inch inlet/outlet Learn More
    $965.99 Retail Price:  $1275.00
  5. 650682 E4 Viqua Professional UltraViolet Water Disinfection System

    650682 E4 Viqua Professional UltraViolet Water Disinfection System

    Fits standard 1-inch inlet/outlet Learn More
    $885.99 Retail Price:  $1185.00
  6. 650683 E4+ Viqua UltraViolet Water Disinfection System

    650683 E4+ Viqua Professional Plus UltraViolet Water Disinfection System

    Fits standard 1-inch inlet/outlet Learn More
    $1,275.99 Retail Price:  $1695.00
  7. 650659 PRO30 Viqua UltraViolet Water Disinfection System

    650659 PRO30 Viqua Professional Plus UltraViolet Water Disinfection System

    Utilizes 1-1/4-inch MNPT x 1-inch FNPT combo fitting Learn More
    $2,795.99 Retail Price:  $3745.00
  8. Hydronix SDC-45-2001 Whole House Sediment Filter Cartridge (6-Pack)

    SDC-45-2001 Hydronix Whole House Replacement Sediment Filter Cartridge (6-Pack)

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    $112.99

  9. Hydronix SDC-45-2005 Whole House Sediment Filter Cartridge (6-Pack)

    SDC-45-2005 Hydronix Whole House Replacement Sediment Filter Cartridge (6-Pack)

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    $112.99

  10. SDC-45-2010 Hydronix Water Filter Cartridge 6-Pack

    SDC-45-2010 Hydronix Sediment Water Filter Cartridge (6-Pack)

    10-micron filter fits into water filtration systems that use 20-inch x 4.5-inch filter replacements Learn More

    $114.99

  11. SDC-45-2020 Hydronix Sediment Water Filter 6-Pack
  12. SPC-45-2020 Hydronix 20 x 4.5 inch Pleated Sediment Water Filter 6pk

    SPC-45-2020 Hydronix 20 x 4.5 inch Pleated Sediment Water Filter 20 Micron (6-Pack)

    Fits into systems that use the Liquatec SPF-45-2020, Pentek 255495-43 and Watts FM-BB-20-20 water filters Learn More

    $114.99

  13. DGD-2501-20 Pentek Whole House Replacement Sediment Filter (6-Pack)

    DGD-2501-20 Pentek Whole House Replacement Sediment Filter Cartridge (6-Pack)

    Fits most housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    $136.99

  14. DGD-5005-20 Pentek Whole House Filter Replacement Cartridge (50-Pack)

    DGD-5005-20 Pentek Whole House Filter Replacement Cartridge (50-Pack)

    Fits Pentek 20-inch Big Blue and other heavy-duty filter housings Learn More

    $714.99

  15. DGD-5005-20 Pentek Whole House Filter Replacement Cartridge (6-Pack)

    DGD-5005-20 Pentek Whole House Filter Replacement Cartridge (6-Pack)

    Fits Pentek 20-inch Big Blue and other heavy-duty filter housings Learn More

    $121.99

  16. DGD-7525-20 Pentek Whole House Replacement Sediment Filter (6-Pack)

    DGD-7525-20 Pentek Whole House Replacement Sediment Filter Cartridge (6-Pack)

    Fits most housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    $122.99

  17. ECP1-20BB Pentek Replacement Filter Cartridge (6-Pack)

    ECP1-20BB Pentek Replacement Filter Cartridge (6-Pack)

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    $142.99

  18. ECP1-BB Pentek Replacement Filter Cartridge (12-Pack)

    ECP20-BB Pentek Replacement Filter Cartridge (12-Pack)

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    $163.99

  19. ECP20-20BB Pentek Replacement Filter Cartridge (6-Pack)

    ECP20-20BB Pentek Replacement Filter Cartridge (6-Pack)

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    $132.99

  20. ECP20-BB Pentek Replacement Filter Cartridge (12-Pack)

    ECP20-BB Pentek Replacement Filter Cartridge (12-Pack)

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    $165.99

  21. ECP20-BB Pentek Replacement Filter Cartridge (20-Pack)

    ECP20-BB Pentek Replacement Filter Cartridge (20-Pack)

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    $254.99

  22. ECP20-BB Pentek Replacement Filter Cartridge (6-Pack)

    ECP20-BB Pentek Replacement Filter Cartridge (6-Pack)

    Fits most Big Blue housings that accept 10-inch x 4.5-inch water filter cartridges Learn More

    $86.99

  23. ECP5-20BB Pentek Whole House Filter Replacement Cartridge (6-Pack)

    ECP5-20BB Pentek Whole House Filter Replacement Cartridge (6-Pack)

    Fits Pentek 20-inch Big Blue and any standard housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More

    $132.99

  24. ECP5-BB Pentek Whole House Filter Replacement Cartridge (12-Pack)

    ECP5-BB Pentek Whole House Filter Replacement Cartridge (12-Pack)

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More

    $169.99

  25. ECP5-BB Pentek Whole House Filter Replacement Cartridge (20-Pack)

    ECP5-BB Pentek Whole House Filter Replacement Cartridge (20-Pack)

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More

    $254.99

Items 1 to 25 of 141 total

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