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  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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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.

27 Item(s)

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  • W9120145 Doulton Replacement Candle Set (6-Pack)

    W9120145 Doulton Replacement Candle Set (6-Pack)

    $104.99
    MSRP: $118.30
    Save 11%
  • W9120562 Doulton Sterasyl Undersink Ceramic Candle Replacement Filter Cartridge
  • W9142010 Doulton Replacement Ceramic Filter

    W9142010 Doulton Replacement Ceramic Filter

    $15.99
    MSRP: $18.39
    Save 13%
  • W9331032 Doulton UltraCarb Countertop Filter System

    W9331032 Doulton HCP UltraCarb Countertop Filter System

    $135.99
    MSRP: $158.65
    Save 14%
  • W9377010 Doulton Gravity Filter System
  • W9381105 Doulton RIO 2000 Ceramic Multi-Candle Filter Cartridge
  • 1040 Katadyn Camping Water Filter Kit

    1040 Katadyn Camping Water Filter Kit

    $199.95
    MSRP: $232.24
    Save 14%
  • 1120070 Katadyn Siphon Filter

    1120070 Katadyn Siphon Filter

    $79.95
    MSRP: $94.24
    Save 15%
  • 20720 Katadyn Replacement Filter Element

    20720 Katadyn Replacement Filter Element

    $59.95
    MSRP: $71.24
    Save 16%
  • 20743 Katadyn Replacement Ceramic Element

    20743 Katadyn Replacement Ceramic Element

    $69.95
    MSRP: $82.74
    Save 15%
  • 2110070 Katadyn Camping Filter System

    2110070 Katadyn Camping Filter System

    $317.95
    MSRP: $367.94
    Save 14%
  • 2110080 Katadyn Gravity Filter System

    2110080 Katadyn Gravity Filter System

    $294.95
    MSRP: $341.49
    Save 14%
  • 8013618 Katadyn Camping Filter System

    8013618 Katadyn Camping Filter System

    $369.95
    MSRP: $427.74
    Save 14%
  • 8016389 Katadyn Camping Filter System

    8016389 Katadyn Camping Filter System

    $1,499.95
    MSRP: $1,727.24
    Save 13%
  • 8017763 Katadyn Camping Filter System

    8017763 Katadyn Camping Filter System

    $169.05
    MSRP: $255.24
    Save 34%
  • 8017764 Katadyn Microfilter System
  • 8015035 Katadyn Vario Backcountry Series Replacement Ceramic Prefilter Disc
  • 8013632 Katadyn Mini Ultralight Series Microfilter Replacement Cartridge
  • CRE-1 Pentek Undersink Filter Replacement Cartridge

    CRE-1 Pentek Undersink Filter Replacement Cartridge

    $23.99
    MSRP: $30.69
    Save 22%
  • W9220406 Doulton Replacement Ceramic Filter

    W9220406 Doulton Replacement Ceramic Filter

    $45.99
    MSRP: $52.73
    Save 13%
  • W9220402 Doulton Slim Line Replacement Ceramic Filter

    W9220402 Doulton Slim Line Replacement Ceramic Filter

    $30.99
    MSRP: $34.55
    Save 10%
  • W9222901 Doulton Replacement Ceramic Filter
  • W9331028 Doulton SuperCarb Countertop Filter System

    W9331028 Doulton HCP SuperCarb Countertop Filter System

    $147.05
    MSRP: $174.79
    Save 16%
  • W9331208 Doulton Countertop Filter System

    W9331208 Doulton HCS Countertop Water Filtration System

    $253.94
    MSRP: $294.33
    Save 14%
  • W9223021 Doulton Ceramic Water Filter

    W9223021 Doulton Ultracarb Ceramic Water Filter

    $50.05
    MSRP: $70.14
    Save 29%
  • CQE-RC-04005 Crystal Quest Ceramic Water Filter Cartridge
  • 8013619 Katadyn Pocket Replacement Camping Water Filter Kit

27 Item(s)

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