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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.

Items 1 to 25 of 214 total

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  1. 603053 Viqua Bottom Sleeve Bolt

    603053 Viqua Bottom Sleeve Bolt

    Fits Viqua PRO series, H/PLUS, K/PLUS systems. Fits discontinued Trojan UV Max G/PLUS, J/PLUS systems. Learn More
    $30.99 Retail Price:  $33.34
  2. Desal TFM-18-C Reverse Osmosis Membrane

    Desal TFM-18-C Reverse Osmosis Membrane

    Fits Culligan H5, H8, H53, H82C, and H83 reverse osmosis systems Learn More
    $30.99 Retail Price:  $38.99
  3. WFPF13003B DuPont Universal Whole House Filtration System

    WFPF13003B DuPont Universal Whole House Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
    $31.99 Retail Price:  $41.99
  4. ICF-2512-ALK Hydronix Inline Coconut Carbon Filter Cartridge

    ICF-2512-ALK Hydronix Inline Coconut Carbon Filter Cartridge

    Fits most 1/4-inch standard water lines Learn More
    $31.99 Retail Price:  $50.99
  5. Garnet-812 Watts Water Treatment Media #8-12

    Garnet-812 Watts Water Treatment Media #8-12

    $31.99 Retail Price:  $40.99
  6. W9222900 Doulton Ceramic Water Filter

    W9222900 Doulton Slim Line SuperCarb Undersink Ceramic Water Filter

    Fits Doulton Short Mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $32.99 Retail Price:  $52.73
  7. WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System

    WFPF38001C DuPont Universal Valve-In-Head Whole House Water Filtration System

    For use with DuPont WFPFC whole house filter cartridges Learn More
    $32.99 Retail Price:  $41.99
  8. AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC

    AF-10-2011 Aries Specialty Cartridge 10-inch x 2.5-inch 1 LBS KDF/GAC

    Fits standard 10 x 2.5-inch filter housings Learn More
    $32.99
  9. SPC-25-1020 Hydronix Pleated Sediment Water Filter (6-Pack)

    SPC-25-1020 Hydronix Pleated Sediment Water Filter (6-Pack)

    Fits into filtration systems that use Liquatec SPF-25-1020, Pentek 255483-43 and Watts FM-20-975 water filters Learn More

    $32.99

  10. WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge

    WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge

    Fits WFDW120009W DuPont Universal Drinking Water Filter System and other brands of 10-inch standard-size filter systems Learn More
    $33.99 Retail Price:  $45.85
  11. NCP-BB Pentek Whole House Water Filter
  12. Triton Water Filters Replacement Color Changing Di Cartridge Hydrologic 22016

    Triton Water Filters Replacement Color Changing Di Cartridge Hydrologic 22016

    Fits standard 10 inches x 2.5 inches housings Learn More
    $34.99 Retail Price:  $43.99
  13. P5-20BB Tier1 Whole House Sediment Water Filter (2-Pack)

    P5-20BB Tier1 Whole House Sediment Water Filter (2-Pack)

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

    $34.99

  14. SPC-25-1005 Hydronix Pleated Sediment Water Filter (6-Pack)

    SPC-25-1005 Hydronix Pleated Sediment Water Filter (6-Pack)

    Fits into systems that use Liquatec SPF-25-1005, Pentek 255482-43 and Watts FM-5-975 water filters Learn More

    $34.99

  15. AF-20-2015 Aries Comparable Sediment Water Filter by Tier1

    AF-20-2015 Aries Comparable Polypropylene Sediment Water Filter by Tier1

    Fits water filtration systems that accept 20 x 4.5 inch cartridges, including the #20 Big Blue and Big Boy housings by Pentek Learn More

    Regular Price: $66.99

    Special Price: $35.05

  16. QS-810 Viqua Quartz Sleeve for S810RL UV Lamp

    QS-810 Viqua Quartz Sleeve for S810RL UV Lamp

    $35.99 Retail Price:  $48.00
  17. P5-20 Tier1 Whole House Sediment Water Filter (6-Pack)
  18. NCP-20BB Pentek Whole House Filter Replacement

    NCP-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek Big Blue and most standard 20-inch heavy duty housings that use 20-inch x 4 1/2-inch replacement filter cartridges Learn More

    As Low As $33.33 Per Filter

  19. WFFMC303X DuPont Faucet Mount Replacement Cartridges - Ultra Protection Filter (3-pack)

    WFFMC303X DuPont Faucet Mount Replacement Cartridges - Ultra Protection Filter (3-pack)

    Fits all DuPont faucet mounts Learn More
    $36.99 Retail Price:  $39.34
  20. OB1-S-S06 OmniFilter Undersink Water Filter System

    OB1-S-S06 OmniFilter Undersink Water Filter System

    Fits 3/4-inch water line Learn More
    $36.99
  21. WS01-WH Filtrete Water Station Filtered Water Bottle Filling Station
  22. AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    AF-10-2210 Aries Comparable Sediment Water Filter by Tier1

    Fits standard number 10, slim-line number 10, and other filter housings using 10 x 2.5-inch filters Learn More
    $37.99 Retail Price:  $56.39
  23. WFFM350XBN DuPont Deluxe Faucet Mount Drinking Water Filter - Brushed Nickel

    WFFM350XBN DuPont Deluxe Faucet Mount Drinking Water Filter (Brushed Nickel)

    Fits most standard faucets Learn More
    $37.99 Retail Price:  $40.34
  24. 602732 Viqua Quartz Sleeve for 602805 UV Lamp

    602732 Viqua Quartz Sleeve for 602805 UV Lamp

    For use with Viqua ultraviolet disinfection systems using the 602805 UV lamp Learn More
    $37.99 Retail Price:  $51.00
  25. K5666-KK Omnipure Inline Fluoride Filter

    K5666-KK Omnipure Inline Fluoride Filter

    Fits standard 3/8-inch water lines Learn More
    $38.99 Retail Price:  $50.99

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