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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. 55897C Halsey-Taylor Water Sentry VII Drinking Fountain Filter

    55897C Halsey-Taylor Water Sentry VII Drinking Fountain Filter

    Fits Elkay and Halsey-Taylor Water Sentry VII drinking fountains Learn More
  2. 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
  3. 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
  4. 55898C Halsey-Taylor Drinking Fountain Filter Replacement Cartridge

    55898C Halsey-Taylor Water Filter Cartridge Replacement

    Fits the Halsey Taylor Hydroboost and the Elkay EZH2O bottle filling station Learn More
    $189.99
  5. 36005 Hydrologic SmallBoy De-Chlorinator and Sediment Filter System With Upgraded KDF
  6. F-201R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)

    F-201R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)

    Fits the InSinkErator F-201 Water Filtration System, and all Series 1100 and 2200 Instant Hot Water Dispensers Learn More
    $66.99 Retail Price:  $73.36
  7. F-601R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)

    F-601R InSinkErator Instant Hot Water Dispenser Replacement Filter Cartridge (2-Pack)

    Fits the InSinkErator F-201 Water Filtration System, and all Series 1100 and 2200 Instant Hot Water Dispensers Learn More
    $130.99 Retail Price:  $134.42
  8. 8017757 Katadyn MyBottle Ultralight Series 24-Ounce Personal Water Purifier Bottle - Green Deer
  9. 8014931 Katadyn Vario Backcountry Series Microfilter Water Filter
  10. 31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    31050 Hydrologic TallBoy Sediment Filter & Dechlorinator

    Built with a two-stage filtration and protected by a one year limited warranty Learn More
    $153.99 Retail Price:  $183.95
  11. P-12 Under Sink Water Replacement Filter Cartridge by Tier1
  12. RO5 Tier1 5-Stage Reverse Osmosis System

    RO5 Tier1 5-Stage Reverse Osmosis System

    $195.99 Retail Price:  $249.99
  13. 200378 Axeon HF1-4021 Reverse Osmosis Membrane

    200378 Axeon HF1-4021 Reverse Osmosis Membrane

    Sized 21 inches (length) x 3.95 inches (outside diameter) Learn More
    $172.99 Retail Price:  $223.99
  14. AF-20-3690-BB Aries Replacement Whole House Fluoride Removal Filter

    AF-20-3690-BB Aries Whole House Fluoride Removal Filter

    Fits most housings that accept 20 inch x 4.5 filter cartridges Learn More
    $136.99 Retail Price:  $171.99
  15. 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
  16. 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
  17. 3M Aqua-Pure APDWS1000 Undersink Water Filter System

    APDWS1000 Undersink Water Filter System by 3M Aqua-Pure

    Fits most standard water lines Learn More
    $394.99 Retail Price:  $397.34
  18. WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System

    WFHD13001B DuPont Universal Heavy Duty Whole House Filtration System

    Fits standard 10 inch by 4.5 inch filter cartridges Learn More
  19. WFCH2 DuPont Complete Home Water Filtration Kit

    WFCH2 DuPont Complete Home Water Filtration Kit

    For complete house filtration Learn More
  20. FRSS-1.5 Sterilight 1.5 GPM 1/2-inch Flow Restrictor
  21. FRSS-2.5 Sterilight 2.5 GPM 1/2-inch Flow Restrictor
  22. FRSS-3.5 Sterilight 3.5 GPM 1/2-inch Flow Restrictor
  23. FRSS-6 Sterilight 6 GPM 1-inch Flow Restrictor
  24. FRSS-6-34 Sterilight 6 GPM 3/4-inch Flow Restrictor
  25. Sterilight 8 GPM 1-inch Flow Restrictor

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