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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 56 total

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  1. 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
  2. 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
  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. W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge

    W9123053 Doulton UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge

    Fits Doulton HIP, HIS and HCPS housings (NOT gravity-fed) Learn More
    $52.99 Retail Price:  $59.25
  5. W2123100 Doulton Wing Nut

    W2123100 Doulton Long Mount Water Filter Wing Nut

    Fits all Doulton long mount water filter candles Learn More
    $5.99 Retail Price:  $8.34
  6. W2160901 Doulton Candle Mount O-ring

    W2160901 Doulton Ceramic Water Filter Candle O-Ring

    Fits all Doulton short mount ceramic water filter candles Learn More
    $3.99 Retail Price:  $5.74
  7. W2313072 Doulton SS Vino Tap / Spigot

    W2313072 Doulton Stainless Steel Gravity Filter Vino Tap / Spigot

    Fits Doulton stainless steel gravity water filter systems Learn More
    $14.99 Retail Price:  $19.16
  8. W9120145 Doulton Replacement Candle Set (6-Pack)

    W9120145 Doulton Replacement Candle Set (6-Pack)

    Fits the RIO 2000 High-Flow Multi-Candle filter module Learn More
    $104.99 Retail Price:  $118.30
  9. W9120562 Doulton Sterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9120562 Doulton Sterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    Fits the (S) type thread mount in HIP, HCP and HIS housings Learn More
    $30.99 Retail Price:  $39.96
  10. W9121020 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9121020 Doulton Undersink Ceramic Candle Water Filter Cartridge

    Fits all Doulton Gravity systems Learn More
    $25.99 Retail Price:  $36.02
  11. W9121200 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9121200 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    Fits Doulton gravity fed systems Learn More
    $34.99 Retail Price:  $39.97
  12. W9121214 Doulton ATC Super Sterasyl Replacement Element

    W9121214 Doulton ATC Super Sterasyl Ceramic Water Filter

    Fits all Doulton Gravity systems Learn More
    $39.99 Retail Price:  $47.91
  13. W9121715 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9121715 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    Fits Doulton gravity fed systems Learn More
    $36.99 Retail Price:  $41.41
  14. W9121750 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9121750 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    Fits Doulton HIP, HIS and HCPS housings (NOT gravity-fed) Learn More
    $36.99 Retail Price:  $41.50
  15. W9122021 Doulton SuperCarb Replacement Element

    W9122021 Doulton SuperCarb Replacement Ceramic Water Filter

    Fits pressurized Doulton short mount Countertop, Undersink and Inline Water Filtration Systems Only Learn More
    $47.99 Retail Price:  $54.26
  16. W9122190 Doulton SuperCarb SI Replacement Element

    W9122190 Doulton SuperCarb SI Ceramic Water Filter

    Fits all Doulton short mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $53.99 Retail Price:  $60.21
  17. W9123019 Doulton UltraCarb SI Replacement Element

    W9123019 Doulton UltraCarb SI Ceramic Filter Candle

    Fits all Doulton Short Mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $58.99 Retail Price:  $66.48
  18. W9125030 Doulton Specialty Replacement Filter Cartridge

    W9125030 Doulton Fluoride Reducing Water Filter Cartridge

    Fits Doulton Short Mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $53.99 Retail Price:  $59.96
  19. W9142010 Doulton Replacement Ceramic Filter

    W9142010 Doulton Replacement Ceramic Filter

    $15.99 Retail Price:  $18.39
  20. W9223002 Doulton Replacement Ceramic Filter

    W9223002 Doulton Slimline Replacement Ceramic Filter

    Fits standard 10-inch x 2.5-inch housings that accept cartridges open on both ends (OBE) Learn More
    $53.99 Retail Price:  $60.87
  21. W9223026 Doulton Replacement Ceramic Filter

    W9223026 Doulton Replacement Ceramic Filter

    Fits standard 10-inch filter housings, including systems with Franke Triflow faucets, FRXH1 and FRXS2 and many others Learn More
  22. W9240001 Doulton Specialty Replacement Filter Cartridge

    W9240001 Doulton Specialty Replacement Water Filter Cartridge

    Fits Doulton Short Mount Countertop, Undersink and Inline Water Filtration Systems Learn More
    $32.99 Retail Price:  $37.74
  23. W9240002 Doulton Specialty Replacement Filter Cartridge

    W9240002 Doulton Specialty Replacement Water Filter Cartridge

    Fits pressurized Doulton HIP2 Duo and HIP3 Triple housing systems Learn More
    $21.99 Retail Price:  $24.99
  24. W9320004 Doulton Undersink Filter System

    W9320004 Doulton HIS Undersink Water Filtration System

    Fits 10 inch by 2 inch short thread filter candles Learn More
    $176.16 Retail Price:  $204.88
  25. W9330042 Doulton Undersink Filter System

    W9330042 Doulton HIP Undersink Water Filtration System

    Fits 10 inch by 2 inch short thread filter candles Learn More
    $76.99 Retail Price:  $98.80

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