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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. P5-10 Tier1 Sediment Water Filter (12-pack)

    P5-10 Tier1 Sediment Water Filter (12-pack)

    Fits into most industry standard 10-inch water filtration system housings Learn More

    $40.99

  2. CW-MF Pentek Whole House Filter Replacement Cartridge (6-Pack)

    CW-MF Pentek Whole House Filter Replacement Cartridge (6-Pack)

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More

    $40.99

  3. P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  4. EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    EPM-20BB Pentek Comparable Whole House Water Filter by Tier1

    Fits most standard 20 x 4.5-inch housings Learn More
    $41.99 Retail Price:  $47.99
  5. 35430 Brita Grand Pitcher Orange

    35430 Brita Grand Pitcher Orange

    $41.99 Retail Price:  $45.99
  6. Pentair NEPP2-40DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP2-40DB Pureflex Pleated Polypropylene Cartridge

    Fits standard filter housings that accept 40 x 2.5-inch filters Learn More
    $41.99 Retail Price:  $52.99
  7. 200362 Axeon TF-1812-150 Residential Reverse Osmosis Membrane

    200362 Axeon TF-1812-150 Residential Reverse Osmosis Membrane

    Fits standard size 12 x 2 inch RO membrane housings Learn More
    $43.99 Retail Price:  $59.99
  8. BW60-1812-75 Filmtec Reverse Osmosis Membrane

    BW60-1812-75 Filmtec Reverse Osmosis Membrane

    Fits reverse osmosis systems from various brands Learn More
    $44.99 Retail Price:  $47.34
  9. DuPont WFFS150XCH Chrome Counter Top Faucet System
  10. EPM-20BB Pentek Whole House Filter Cartridge

    EPM-20BB Pentek Whole House Filter Replacement Cartridge

    Fits Pentek 20-inch Big Blue and other heavy-duty filter housings Learn More

    As Low As $43.67 Per Filter

  11. EP10-10 Tier1 Carbon Block Water Filter (6-Pack)

    EP10-10 Tier1 Carbon Block Water Filter (6-Pack)

    Fits filter housings that accept standard 10 x 2.5-inch filter cartridges Learn More

    $45.99

  12. EP-10 Pentek Comparable Whole House Water Filter by Tier1 (6-Pack)

    EP-10 Pentek Comparable Whole House Water Filter by Tier1 (6-Pack)

    Fits into most industry standard 10 x 2.5-inch water filtration system housings Learn More

    $45.99

  13. GAC20-BB Pentek Whole House Water Filter

    GAC20-BB Pentek Whole House Filter Replacement Cartridge

    Fits any heavy duty housing that uses 20-inch x 4 1/2-inch replacement filter cartridges Learn More

    As Low As $45.99 Per Filter

  14. 602733 Viqua Quartz Sleeve for 602806 UV Lamp

    602733 Viqua Quartz Sleeve for 602806 UV Lamp

    For use with Viqua ultraviolet disinfection systems using the 602806 UV lamp Learn More
    $48.99 Retail Price:  $64.00
  15. EP-20BB Pentek Replacement Water Filter

    EP-20BB Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More

    As Low As $41.67 Per Filter

  16. Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge

    Pentair NEPP12-40DB Pureflex Pleated Polypropylene Cartridge

    Fits standard filter housings that accept 40 x 2.5-inch filters Learn More
    $49.99 Retail Price:  $61.99
  17. Katadyn 8018342 MyBottle Microfilter Red Splash

    Katadyn 8018342 MyBottle Microfilter Red Splash

    Perfect for outdoor enthusiasts, campers, hunters, survivalists, and anyone traveling to places with questionable water quality Learn More
    $40.99 Retail Price:  $59.79
  18. Pentek 166141 Big White 20-inch Filter Housing

    Pentek 166141 Big White 20-inch Filter Housing

    Receives any standard 20 inch by 4.5 inch filter cartridge Learn More
    $45.99 Retail Price:  $58.64
  19. 10-212 Pentek UV Lamp

    10-212 Pentek UV Lamp

    Fits the Pentek UVS-110 UltraViolet Filtration System Learn More
    $47.99 Retail Price:  $67.38
  20. Omnipure ELF-10M-P Carbon Block with Polyphosphate

    Omnipure ELF-10M-P Carbon Block with Polyphosphate

    Proprietary design fits Omnipure ELF and E series valve heads Learn More
    $47.99 Retail Price:  $50.34
  21. 67300 Aquamira Home Emergency Drinking Water Kit
  22. APHOSF-RC 3M Aqua-Pure High-Output Shower Filter Cartridge

    APHOSF-RC 3M Aqua-Pure High-Output Shower Filter Cartridge

    Fits 3M Aqua-Pure high-output filtered showerheads Learn More
    $40.99 Retail Price:  $42.54
  23. 3M Aqua-Pure APIL3R Inline Water Filter

    APIL3R 3M Aqua-Pure Inline Water Filter Cartridge

    Fits the 3M Aqua-Pure APIL3 inline water filtration system Learn More
    $40.99 Retail Price:  $45.41
  24. RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    RC-EZ-4 Culligan Level 4 Easy-Change Inline Filter Replacement Cartridge

    Fits Culligan Easy-Change filter systems including IC-EZ-4, US-EZ-4, and RV-EZ-4 Learn More
    $40.99 Retail Price:  $50.59
  25. EV9608-10 Everpure 2JT Flushing and Sanitizing Cartridge

    EV9608-10 Everpure 2JT Flushing and Sanitizing Cartridge

    Fits Everpure filter heads including models QL1, QL2, QL3, and QL3B Learn More
    $40.99 Retail Price:  $49.44

Items 1 to 25 of 149 total

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