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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. 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
  2. W9142010 Doulton Replacement Ceramic Filter

    W9142010 Doulton Replacement Ceramic Filter

    $15.99 Retail Price:  $18.39
  3. W9377010 Doulton Gravity Filter System

    W9377010 Doulton Gravity Filtration System

    Fits Doulton long mount water filter candles Learn More
    $73.99 Retail Price:  $94.69
  4. 1120070 Katadyn Siphon Filter

    1120070 Katadyn Siphon Filter

    Fits in a water bucket or basin Learn More
    $79.95 Retail Price:  $94.24
  5. 20720 Katadyn Replacement Filter Element

    20720 Katadyn Replacement Filter Element

    Fits the Katadyn 'Drip Gravidyn' System Learn More
    $59.95 Retail Price:  $71.24
  6. 20743 Katadyn Replacement Ceramic Element

    20743 Katadyn Replacement Ceramic Element

    Fits the Katadyn 'Ceradyn' Systems Learn More
    $69.95 Retail Price:  $82.74
  7. 8015035 Katadyn Vario Backcountry Series Replacement Ceramic Prefilter Disc
  8. 8013632 Katadyn Mini Ultralight Series Microfilter Replacement Cartridge
  9. CRE-1 Pentek Undersink Filter Replacement Cartridge

    CRE-1 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $23.99 Retail Price:  $30.69
  10. W9220406 Doulton Replacement Ceramic Filter

    W9220406 Doulton Replacement Ceramic Filter

    Fits most standard 2.5-inch by 10-inch filter housings Learn More
    $45.99 Retail Price:  $52.73
  11. W9220402 Doulton Slim Line Replacement Ceramic Filter

    W9220402 Doulton Slim Line Replacement Ceramic Filter

    Fits most standard 2.5-inch by 10-inch filter housings Learn More
    $30.99 Retail Price:  $34.55
  12. W9222901 Doulton Replacement Ceramic Filter

    W9222901 Doulton Replacement Ceramic Filter

    Fits most standard 2.5-inch by 10-inch filter housings Learn More
  13. W9223021 Doulton Ceramic Water Filter

    W9223021 Doulton Ultracarb Ceramic Water Filter

    Replacement cartridge for water filtration systems that are included with Franke Triflow faucets Learn More
    $50.99 Retail Price:  $70.14
  14. CQE-RC-04005 Crystal Quest Ceramic Water Filter Cartridge

    CQE-RC-04005 Crystal Quest Ceramic Water Filter Cartridge

    Fits Crystal Quest countertop, undersink and refrigerator water filtration systems Learn More
    $57.99 Retail Price:  $68.99

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