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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. 602974 Viqua Quartz Sleeve for 602854 UV Lamp

    602974 Viqua Quartz Sleeve for 602854 UV Lamp

    For use with Viqua ultraviolet disinfection systems using the 602854 UV lamp Learn More
    $50.99 Retail Price:  $68.00
  2. P5-10BB Tier1 Sediment Water Filter (4-pack)

    P5-10BB Tier1 Sediment Water Filter (4-Pack)

    Fits filtration system housings that accept 10 x 4.5 inch cartridges Learn More

    $50.99

  3. R30BB Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)

    R30BB Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)

    Fits most standard 10 x 5-inch housings Learn More

    $50.99

  4. FRSS-1.5 Sterilight 1.5 GPM 1/2-inch Flow Restrictor
  5. FRSS-1.5 Viqua 1.5 GPM 1/2-inch Flow Restrictor

    FRSS-1.5 Viqua 1.5 GPM 1/2-inch Flow Restrictor

    1/2 x 1/2 inch FNPT fitting Learn More
    $52.99 Retail Price:  $90.00
  6. Pentair GF20-40BPPPDB Industrial Triflex Microfiberglass Cartridge

    Pentair GF20-40BPPPDB Industrial Triflex Microfiberglass Cartridge

    Fits systems that accept 40 x 2.5-inch filters Learn More
    $52.99 Retail Price:  $67.99
  7. W9125010 Doulton Specialty Replacement Filter Cartridge

    W9125010 Doulton CleanSoft Scale Pre-Filter Replacement Cartridge

    Fits Doulton Short Mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $53.99 Retail Price:  $59.96
  8. DuPont WFROM1000X Quick Twist Reverse Osmosis Membrane

    DuPont WFROM1000X Quick Twist Reverse Osmosis Membrane

    Fits the Dupont WFRO60X Reverse Osmosis System Learn More
  9. C2-02 Advanced Water Products 20-inch x 4.5-inch Replacement Carbon Whole House Filter

    C2-02 Advanced Water Products Replacement 20-inch x 4.5-inch Carbon Whole House Filter

    Fits most 20-inch x 4.5-inch filter housings, including the Trojan UV Max IHS12-D4 and IHS22-D4 Water Disinfection Systems Learn More
    $54.99 Retail Price:  $89.00
  10. C2-02 Viqua Carbon Whole House Filter

    C2-02 Viqua Carbon Whole House Filter

    Fits most 20 x 4.5-inch filter housings including the Viqua IHS12-D4 and IHS22-D4 water disinfection systems. Learn More
    $54.99 Retail Price:  $89.00
  11. C1-20 Pentek Comparable Whole House Water Filter by Tier1 (4-Pack)

    C1-20 Pentek Comparable Whole House Carbon Water Filter by Tier1 (4-Pack)

    Fits most standard 20 x 2.5-inch housings Learn More

    $54.99

  12. W9222909 Doulton Imperial SuperCarb OBE Replacement Element

    W9222909 Doulton Imperial SuperCarb OBE Ceramic Water Filter

    Fits most standard 2.5-inch by 10-inch water filtration system housings Learn More
    $55.99 Retail Price:  $59.71
  13. 602734 Viqua Quartz Sleeve for 602807 UV Lamp

    602734 Viqua Quartz Sleeve for 602807 UV Lamp

    For use with Viqua ultraviolet disinfection systems using the 602807 UV lamp Learn More
    $57.99 Retail Price:  $76.00
  14. 602975 Viqua Quartz Sleeve for 602855 UV Lamp

    602975 Viqua Quartz Sleeve for 602855 UV Lamp

    For use the Viqua ultraviolet disinfection system using the 602855 UV lamp Learn More
    $57.99 Retail Price:  $77.00
  15. Pentair GF20-30BPPPDB Industrial Triflex Microfiberglass Cartridge

    Pentair GF20-30BPPPDB Industrial Triflex Microfiberglass Cartridge

    Fits systems that accept 30 x 2.5-inch filters Learn More
    $57.99 Retail Price:  $72.99
  16. WSQC-2 WaterSentinel Reverse Osmosis Carbon GAC Filter Cartridge
  17. 8017757 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Green Deer
  18. QS-012 Viqua Quartz Sleeve for S740RL-4C UV Lamp

    QS-012 Viqua Quartz Sleeve for S740RL-4C UV Lamp

    For use with Viqua ultraviolet disinfection systems using the S740RL-4C UV lamp Learn More
    $59.99 Retail Price:  $77.00
  19. 22120 Hydrologic Stealth RO 100GPD Membrane

    22120 Hydrologic Stealth RO 100GPD Membrane

    Fits 1/4-inch inline shut-off valve Learn More
    $59.99 Retail Price:  $64.99
  20. 602974 Trojan UV Max Quartz Sleeve

    602974 Trojan UV Max Quartz Sleeve

    Fits Trojan UVMAX G, G Plus and Pro10 Systems Learn More
  21. W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge

    W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge

    Fits Doulton HIP, HIS and HCPS housings (NOT gravity-fed) Learn More
    $52.99 Retail Price:  $59.25
  22. Pentek 166142 Big White 20-inch x 4.5-inch Filter Housing

    Pentek 166142 Big White 20-inch x 4.5-inch Filter Housing

    Receives any standard 20-inch by 4.5-inch filter cartridge Learn More
    $54.99 Retail Price:  $65.54
  23. ZR-006 ZeroWater Replacement Filter Cartridge (4-Pack)

    ZR-006 ZeroWater Replacement Filter Cartridge (4-Pack)

    Fits ZeroWater brand pitchers, dispensers and water cooler bottles Learn More
    $55.99 Retail Price:  $58.34
  24. 36002017 PURA UV Lamp

    36002017 PURA UV Lamp

    Fits the Pentek UV-110 System Learn More
    $57.99 Retail Price:  $59.79
  25. HF10-MS Cuno Whole House Filter Replacement Cartridge

    HF10-MS Cuno Whole House Filter Replacement Cartridge

    Fits the Cuno Food Service High Flow Series Models including all SGP, ESP, BREW, BEV, and ICE Systems Learn More

    Regular Price: $65.99

    Special Price: $50.05

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