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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. RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

    RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

    Fits most standard 10 x 2.5-inch filter housings Learn More
    $4.99 Retail Price:  $9.99
  2. 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
  3. 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
  4. WFPFC3002 DuPont Universal Whole House Pleated Poly Filter Cartridge (2-Pack)

    WFPFC3002 DuPont Universal Whole House Pleated Poly Filter Cartridge (2-Pack)

    Fits DuPont Whole House Filter Systems and most other brands of 10 x 2.5-inch systems Learn More
  5. 3M Aqua-Pure AP117 Whole House Water Filter Cartridge

    AP117 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $28.99 Retail Price:  $36.67
  6. 3M Aqua-Pure APS117 Whole House Water Filter Replacement Cartridge

    APS117 3M Aqua-Pure Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $34.99 Retail Price:  $40.81
  7. HSH-C135 Culligan Handheld Filtered Shower Head with Massage

    HSH-C135 Culligan Handheld Filtered Shower Head with Massage

    Fits any standard 1/2-inch threaded shower arm Learn More
    $46.99 Retail Price:  $57.49
  8. WHR-140 Culligan Level 2 Shower Filter Replacement Cartridge

    WHR-140 Culligan Level 2 Shower Filter Replacement Cartridge

    Fits Culligan ISH-100, WSH-C125, HSH-C135, and RDSH-C115 shower filters Learn More
    $13.99 Retail Price:  $19.54
  9. WSH-C125 Culligan Filtered Shower Head with Massage Feature

    WSH-C125 Culligan Filtered Shower Head with Massage Feature

    Fits any standard 1/2-inch threaded shower arm Learn More
    $34.99 Retail Price:  $39.66
  10. EV9324-02 Everpure Ice Machine Filter System

    EV9324-02 Everpure Ice Machine Filter System

    Fits standard 3/8-inch water lines Learn More
    $376.99 Retail Price:  $450.79
  11. EV9797-21 Everpure Commercial Filter System

    EV9797-21 Everpure Commercial Filter System

    Fits standard 3/8-inch water lines Learn More
    $599.99 Retail Price:  $692.29
  12. FXHSC GE SmartWater Whole House Filter Replacement Cartridge

    FXHSC GE SmartWater Whole House Filter Replacement Cartridge

    Fits any brand of whole house water filter system that uses standard 9 3/4 x 4 1/2 filter cartridges Learn More
    $22.99 Retail Price:  $25.34
  13. FXSCH GE Shower Replacement Filter Cartridge

    FXSCH GE Shower Replacement Filter Cartridge

    Fits the GE GXSM01HWW shower filter system Learn More
    $14.99 Retail Price:  $18.39
  14. GXSM01HWW GE Shower Filter System

    GXSM01HWW GE Shower Filter System

    Fits standard 1/2-inch threaded shower heads Learn More
    $42.99 Retail Price:  $45.34
  15. H9655-11 Hoshizaki Replacement Filter Cartridge

    H9655-11 Hoshizaki Replacement Water Filter Cartridge

    Fits single, double and triple Hoshizaki water filtration systems Learn More
    $72.99 Retail Price:  $89.69
  16. AR5-CM Sprite Royale Filtered Shower Head - Chrome

    AR5-CM Sprite Royale Filtered Shower Head - Chrome

    Fits most residential showers and baths Learn More
  17. AR5-CT Sprite Royale Filtered Shower Head - White / Chrome

    AR5-CT Sprite Royale Filtered Shower Head - White / Chrome

    Fits most residential showers and baths Learn More
  18. HH-CT Sprite Original Handheld Shower Filter System - White / Chrome

    HH-CT Sprite Original Handheld Shower Filter System - White / Chrome

    Fits most residential showers and baths Learn More
    $36.99 Retail Price:  $42.54
  19. HR5-CM Sprite Royale Handheld Shower Filter System - Chrome
  20. HR5-WH Sprite Royale Handheld Shower Filter System - White

    HR5-WH Sprite Royale Shower Filter System: Handheld, White

    Attaches easily to most residential showers and baths Learn More
    $42.99 Retail Price:  $51.74
  21. 20743 Katadyn Replacement Ceramic Element

    20743 Katadyn Replacement Ceramic Element

    Fits the Katadyn 'Ceradyn' Systems Learn More
    $69.95 Retail Price:  $82.74
  22. MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-5-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More
    $41.99 Retail Price:  $52.89
  23. MATRIKX-CR1-10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-CR1-10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $15.99 Retail Price:  $20.34
  24. MATRIKX-CTO2-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    MATRIKX-CTO2-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 4 1/2-inch replacement filter cartridges Learn More
    $32.99
  25. 3038333 Merlin Reverse Osmosis Carbon Pre Filter

    3038333 Merlin Reverse Osmosis Carbon Pre Filter

    Fits the GE Merlin Reverse Osmosis System Learn More
    $26.99 Retail Price:  $28.74

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