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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 MSRP:  $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. 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

    $209.99

  4. 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

  5. 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

  6. 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

    (Retail Price: $359.99 ) $224.99

  7. 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

    $224.99

  8. 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

  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
  10. 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

    $239.99

  11. 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 MSRP:  $340.00
  12. 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 MSRP:  $325.00
  13. 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 MSRP:  $379.00
  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

    (Retail Price: $279.99 ) $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 MSRP:  $430.00
  16. 650627 Viqua PRO Solenoid Valve Kit

    650627 Viqua PRO Solenoid Valve Kit

    Fits Viqua PRO series and H/PLUS ultraviolet disinfection systems Learn More
    $315.99 MSRP:  $450.00
  17. 650713-007 Viqua UV Disinfection System Controller

    650713-007 Viqua UV Disinfection System Controller

    For use with Viqua D4/PLUS, D4-V, E4/PLUS, E4-V, F4/PLUS, F4-V, and IHS (D4 series) ultraviolet disinfection systems Learn More
    $315.99 MSRP:  $450.00
  18. 650717-001 Viqua E4/F4 Solenoid Valve Kit with Junction Box

    650717-001 Viqua E4/F4 Solenoid Valve Kit with Junction Box

    Fits Viqua E4/PLUS and F4/PLUS ultraviolet disinfection systems Learn More
    $325.99 MSRP:  $595.00
  19. Brondell H2O+ Circle Reverse Osmosis Water Filtration System

    Brondell H2O+ Circle Reverse Osmosis Water Filtration System

    Undersink RO system. 10 times more efficient than conventional RO systems. Learn More
    $369.99
  20. 650717-001 Viqua D4 Solenoid Valve Kit with Junction Box

    650717-001 Viqua D4 Solenoid Valve Kit with Junction Box

    Fits Viqua D4/PLUS and IHS-D4 ultraviolet disinfection systems Learn More
    $393.99 MSRP:  $565.00
  21. 3M Aqua-Pure APDWS1000 Undersink Water Filter System

    APDWS1000 Undersink Water Filter System by 3M Aqua-Pure

    Fits most standard water lines Learn More
    $394.99 MSRP:  $397.34
  22. VIQUA-S5Q-PV

    S5Q-PV Viqua Specialty UltraViolet Water Disinfection System

    Fits standard 3/4-inch inlet/outlet Learn More
    $399.99 MSRP:  $526.00
  23. VIQUA-S8Q-PA

    S8Q-PA Viqua Home UltraViolet Water Disinfection System

    Fits standard 3/4-inch inlet/outlet Learn More
    $415.99 MSRP:  $575.00
  24. Viqua VT4-DWS11 Ultraviolet Filtration System
  25. 650730-004 Viqua LightWise Upgrade Kit for Pro 10 Systems

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