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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. 602855 Viqua Water Disinfection System UV Lamp

    602855 Viqua Water Disinfection System UV Lamp

    Fits Viqua H, H+, and PRO20 UltraViolet filtration systems. Learn More
    $209.99 Retail Price:  $279.00
  2. ECP1-10 Pentek Replacement Filter Cartridge (30-Pack)

    ECP1-10 Pentek Replacement Filter Cartridge (30-Pack)

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

    $209.99

  3. SWC-45-1001 Hydronix String-Wound Sediment Water Filter (20-Pack)

    SWC-45-1001 Hydronix String-Wound Sediment Water Filter (20-Pack)

    Fits most 10-inch Big Blue filter housings and replaces Liquatec SWF-45-1001, Pentek 355213-43 and Watts SF1-10-425 water filters. Learn More

    $215.99

  4. CHLORPLUS-10 Pentek Whole House Filter Replacement Cartridge (12-Pack)

    CHLORPLUS-10 Pentek Whole House Filter Replacement Cartridge (12-Pack)

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

    $215.99

  5. ECP20-20 Pentek Replacement Filter Cartridge (20-Pack)

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

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More

    $224.99

  6. ECP5-20 Pentek Replacement Filter Cartridge (20-Pack)

    ECP5-20 Pentek Replacement Filter Cartridge (20-Pack)

    Fits most housings that accept 20-inch x 2.5-inch water filter cartridges Learn More

    $224.99

  7. DGD-2501 Pentek Whole House Filter Replacement Cartridge (20-Pack)

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

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

    $239.99

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

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

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

    $239.99

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

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

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

    $239.99

  10. 650703 Viqua Home UV Water Disinfection System Sensor

    650703 Viqua Home UV Water Disinfection System Sensor

    Fits Viqua D/D4 PLUS, E/E4 PLUS, and F/F4 PLUS systems Learn More
    $241.99 Retail Price:  $340.00
  11. 602856 Viqua Water Disinfection System UV Lamp

    602856 Viqua Water Disinfection System UV Lamp

    Fits Viqua K, K+, PRO30, PRO50 UltraViolet filtration systems. Fits Trojan J, J+ UltraViolet filtration systems. Sterilight S80, SM80, SV50 UltraViolet filtration systems. Learn More
    $245.99 Retail Price:  $325.00
  12. BA-ICE-S Viqua UV Disinfection System Controller

    BA-ICE-C Viqua UV Disinfection System Controller

    For use with Viqua VP600, VP950 ultraviolet disinfection systems. Fits discontinued Sterilight SC-600, SC-740 systems. Learn More
    $249.99 Retail Price:  $379.00
  13. 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

  14. 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

  15. 650580 Viqua Professional UV Water Disinfection System Sensor

    650580 Viqua Professional UV Water Disinfection System Sensor

    Fits Viqua H PLUS, K PLUS, and PRO series systems. Learn More
    $293.99 Retail Price:  $430.00
  16. 602855 Trojan UV Max UV Lamp

    602855 Trojan UV Max UV Lamp

    Fits Trojan UVMAX H, H Plus and Pro20 Systems Learn More
  17. 3M AquaPure 3MFF101 Whole House Water Filter Cartridge

    3MFF101 3M Aqua-Pure Replacement Water Filter Cartridge

    Fits the 3M Aqua-Pure 3MFF100 Full Flow drinking water system Learn More
    $200.99 Retail Price:  $209.29
  18. XLE-2540 Filmtec Extra Low Energy Commercial Reverse Osmosis Membrane

    XLE-2540 Filmtec Extra Low Energy Commercial Reverse Osmosis Membrane

    Fits select commercial reverse osmosis systems Learn More
    $202.99 Retail Price:  $232.29
  19. 3M Aqua-Pure AP902 Whole House Water Filter

    AP902 3M Aqua-Pure Whole House Water Filtration System

    Fits multiple styles of water filter cartridge, based on your water quality Learn More
    $204.99 Retail Price:  $238.04
  20. 31040 Hydrologic Stealth-RO200 Reverse Osmosis Water Filtration System

    31040 Hydrologic Stealth-RO200 Reverse Osmosis Water Filtration System

    Comes complete with easy installation kit Learn More
    $214.99 Retail Price:  $249.54
  21. EV9324-01 Everpure Ice Machine Filter System

    EV9324-01 Everpure Ice Machine Filter System

    Fits standard 3/8-inch water lines Learn More
    $218.99 Retail Price:  $273.69
  22. 8017763 Katadyn Camping Filter System

    8017763 Katadyn Camping Filter System

    $219.95 Retail Price:  $255.24
  23. AG2540TF Desal Reverse Osmosis Membrane

    AG2540TF Desal Reverse Osmosis Membrane

    Fits GE Osmonics pressure vessels that accept 2.5-inch x 40-inch membranes Learn More
    $219.99 Retail Price:  $226.54
  24. RO-PL5000 PuROLine Reverse Osmosis Filter System

    RO-PL5000 PuROLine Reverse Osmosis Filter System

    $219.99 Retail Price:  $232.29
  25. SST1HA 3M Aqua-Pure Water Filter System Housing

    SST1HA 3M Aqua-Pure Stainless Steel Water Filtration System Housing

    Will fit industry standard water filters in a variety of filtration media types Learn More
    $221.99 Retail Price:  $257.59

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