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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 48 of 284 total

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  • 002045 Viqua Replacement O-Ring

    002045 Viqua Replacement O-Ring

    $2.99
    MSRP: $5.34
    Save 44%
  • PS5-10C Pentek Comparable Sediment Water Filter by Tier1
  • 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  • RS2SS OmniFilter Comparable Whole House Water Filter by Tier1
  • P1 Pentek 10 x 2.5-inch Whole House Sediment Water Filter Replacement
  • P5-10 Tier1 Sediment Water Filter

    P5-10 Tier1 Sediment Water Filter

    $3.99 MSRP: $10.34
    Save 61%
  • P5-478 Pentek Sediment Water Filter
  • PS5-10C Pentek Comparable Sediment Water Filter by Tier1
  • P5-20 Tier1 Sediment Water Filter

    P5-20 Tier1 Whole House Sediment Water Filter

    $4.99 MSRP: $9.19
    Save 46%
  • P20 Pentek 10 x 2.5-inch Comparable Whole House Sediment Water Filter
  • K-Cup Holder Keurig Single Serve Coffee Filter Comparable by Tier1 (6-Pack)
  • 2217 Keurig Comparable K-Cup by Tier1

    2217 Keurig Comparable K-Cup by Tier1

    $4.99
    MSRP: $7.99
    Save 38%
  • PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    $5.79 MSRP: $8.04
    Save 28%
  • S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  • RS1SS OmniFilter Comparable Whole House Water Filter by Tier1
  • DCC-RWF Cuisinart Comparable Replacement Coffee Water Filter by Tier1 (6-Pack)
  • Drinkwell PAC00-13711 Pet Fountain Foam Filter (2-Pack)
  • RS14-SS OmniFilter Whole House Water Filter
  • P1-20 Pentek Comparable Sediment Water Filter by Tier1

    P1-20 Pentek Comparable Sediment Water Filter by Tier1

    $5.99 MSRP: $10.99
    Save 45%
  • W20CLA American Plumber Comparable Whole House Water Filter by Tier1
  • 602665 Viqua UltraViolet Lamp Sleeve Bolt

    602665 Viqua UltraViolet Lamp Sleeve Bolt

    $6.99
    MSRP: $9.34
    Save 25%
  • 5073 Keurig Comparable Replacement Water Filter Cartridge Refills by Tier1 (6-Pack)
  • WFF-6 Mr. Coffee Brand Comparable Replacement Water Filter by Tier1 (6-Pack)
  • KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter
  • SPC-25-1001 Hydronix Pleated Sediment Filter

    SPC-25-1001 Hydronix Pleated Sediment Water Filter

    $6.99 MSRP: $8.04
    Save 13%
  • SPC-25-1020 Hydronix Sediment Water Filter

    SPC-25-1020 Hydronix Pleated Sediment Water Filter

    $6.99 MSRP: $10.91
    Save 36%
  • Pentek CW-MF Whole House Water Filter Replacement Cartridge

    CW-MF Pentek Whole House Filter Replacement Cartridge

    $6.99 MSRP: $10.34
    Save 32%
  • Pentek P1 Polyproplyene Water Filter (10 x 2 1/2)
  • P20-20 Tier1 Sediment Water Filter

    P20-20 Tier1 Sediment Water Filter

    $6.99 MSRP: $9.19
    Save 24%
  • S1 Pentek Comparable Whole House Water Filter by Tier1
  • My K-Cup Keurig Comparable Replacement Coffee Filter Set by Tier1 (3-Piece Set)
  • SB-2R Water Bottle Replacement Filters (2-Pack)

    SB-2R Water Bottle Replacement Filters (2-Pack)

    $7.05
    MSRP: $11.49
    Save 39%
  • PS1-20C Pentek Sediment Water Filter

    PS1-20C Pentek Sediment Water Filter

    $7.99
    MSRP: $13.55
    Save 41%
  • WFFMC100X DuPont Faucet Mount Replacement Cartridge - High Protection Filter
  • AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1
  • AP-GRMB-10PP-10UB Whole House Water Filter Replacement Cartridge
  • AP-GRMB-20PP-10UB Whole House Water Filter Cartridge by 3M Aqua-Pure
  • P1 Pentek Comparable Whole House Sediment Filter by Tier1 (2-Pack)
  • Drinkwell PAC-13067 Pet Fountain Charcoal Filter (3-Pack)
  • Hydronix SPC-25-1005 Pleated Water Filter

    SPC-25-1005 Hydronix Pleated Sediment Water Filter

    $7.99 MSRP: $9.19
    Save 13%
  • EP10-10 Tier1 Carbon Block Water Filter

    EP10-10 Tier1 Carbon Block Water Filter

    $7.99 MSRP: $10.34
    Save 23%
  • Pentek S1 Pleated Whole House Sediment Filter
  • RS1-SS OmniFilter Whole House Water Filter
  • EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    $8.49 MSRP: $11.49
    Save 26%

Items 1 to 48 of 284 total

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