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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. 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. 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

    $30.99

  3. 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
  4. 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
  5. 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
  6. 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
    $31.99
  7. Garnet-812 Watts Water Treatment Media #8-12

    Garnet-812 Watts Water Treatment Media #8-12

    $31.99 Retail Price:  $40.99
  8. 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
  9. NCP-BB Pentek Whole House Water Filter
  10. OB1-S-S06 OmniFilter Undersink Water Filter System

    OB1-S-S06 OmniFilter Undersink Water Filter System

    Fits 3/4-inch water line Learn More
    $33.05
  11. 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
  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
    $34.05 Retail Price:  $59.71
  13. 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
  14. 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

  15. 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

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

    AF-20-2015-BB Tier1 Aries Comparable KDF and Carbon Water Filter

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

    QS-810 Viqua Quartz Sleeve for S810RL UV Lamp

    $35.99 Retail Price:  $48.00
  18. 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
    $36.99 Retail Price:  $56.39
  19. WFFMC303X DuPont Faucet Mount Replacement Cartridges - Ultra Protection Filter (3-pack)
  20. WS01-WH Filtrete Water Station Filtered Water Bottle Filling Station

    WS01-WH Filtrete Water Station Filtered Water Bottle Filling Station

    Regular Price: $46.99

    Special Price: $37.05

  21. WFFM350XBN DuPont Deluxe Faucet Mount Drinking Water Filter - Brushed Nickel
  22. 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
  23. 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
  24. WFDW120009W DuPont Universal Drinking Water Filter System

    WFDW120009W DuPont Universal Drinking Water Filter System

    Fits DuPont WFDW 2000 series, 4000 series, 7000 series Learn More
  25. Aries AF-10-2115 KDF/Granular Activated Carbon

    Aries AF-10-2115 KDF/Granular Activated Carbon

    Fits systems that take 10 x 2-1/2 inch replacements Learn More
    $39.99 Retail Price:  $49.00

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