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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 104 total

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  • TIER1-P10-10

    TIER1-P10-10

    $3.99
  • 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • AP110 Aquapure Comparable Whole House Sediment Water Filter by Tier1
  • TIER1-FX30-934

    TIER1-FX30-934

    $8.99
  • CW-F-D Culligan Comparable Whole House Water Filter 2-Pack by Tier1
  • CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1
  • CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1
  • TIER1-S1AD-934

    TIER1-S1AD-934

    $5.99 Retail Price:  $12.99
  • TIER1-P25-934

    TIER1-P25-934

    $3.99
  • RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    RFC-93 Pentek Radial Flow Carbon Water Filter Cartridge

    $23.99 Retail Price:  $27.99
  • P5-10 Tier1 Sediment Water Filter (4-pack)
  • P1 Pentek Comparable Whole House Sediment Filter by Tier1 (2-Pack)
  • Hydronix SDC-25-1005 6-Pack Whole House Replacement Sediment Filter Cartridge
  • HYDRONIX_SPC_25_1005_6_PACK
  • HYDRONIX_SPC_25_1020_6_PACK
  • CHLORPLUS-10 Pentek Whole House Filter Replacement Cartridge (12-Pack)
  • CW-MF Pentek Whole House Filter Replacement Cartridge (30-Pack)
  • PENTEK_CW_MF_6_PACK

    PENTEK_CW_MF_6_PACK

    $40.99

  • ECP1-10 Pentek Replacement Filter Cartridge (30-Pack)
  • ECP20-10 Pentek Replacement Filter Cartridge (30-Pack)
  • SPC-25-1001 Hydronix Pleated Sediment Filter

    SPC-25-1001 Hydronix Pleated Sediment Water Filter

    As Low As $6.00 Per Filter

  • Hydronix SPC-25-1005 Pleated Water Filter

    SPC-25-1005 Hydronix Pleated Sediment Water Filter

    As Low As $5.16 Per Filter

  • SPC-25-1020 Hydronix Sediment Water Filter

    SPC-25-1020 Hydronix Pleated Sediment Water Filter

    As Low As $5.00 Per Filter

  • Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge
  • Pentek CW-MF Whole House Water Filter Replacement Cartridge

    CW-MF Pentek Whole House Filter Replacement Cartridge

    As Low As $5.60 Per Filter

  • Pentek ECP1-10 Replacement Water Filter Cartridge

    ECP1-10 Pentek Replacement Filter Cartridge

    As Low As $7.00 Per Filter

  • Pentek EP-10 Replacement Water Filter Cartridge

    EP-10 Pentek Replacement Filter Cartridge

    As Low As $7.80 Per Filter

  • EP10-10 Tier1 Carbon Block Water Filter

    EP10-10 Tier1 Carbon Block Water Filter

    As Low As $5.20 Per Filter

  • EP5-10 Tier1 Carbon Block Water Filter

    EP5-10 Tier1 Carbon Block Water Filter

    As Low As $3.82 Per Filter

  • 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

    As Low As $3.00 Per Filter

  • Pentek P1 Polyproplyene Water Filter (10 x 2 1/2)

    P1 Pentek Whole House Filter Replacement Cartridge

    As Low As $5.60 Per Filter

  • Pentek S1 Pleated Whole House Sediment Filter
  • Pentek WS-10 Water Softening Water Filter

    WS-10 Pentek Water Softening Filter

    As Low As $19.66 Per Filter

  • PX05-9-78 Purtrex Replacement Water Filter

    PX05-9-78 Purtrex Replacement Water Filter

    As Low As $4.56 Per Filter

  • The Pentek C1 comparable Whole House Carbon Water Filter by Tier1
  • EP5-20 Tier1 Carbon Block Water Filter

    EP5-20 Tier1 Carbon Block Water Filter

    As Low As $11.04 Per Filter

  • P20 Pentek 10 x 2.5-inch Comparable Whole House Sediment Water Filter
  • CBC-10 Pentek Replacement Water Filter
  • Pentek S1-BB Replacement Water Filter Cartridge

    S1-BB Pentek Replacement Filter Cartridge

    As Low As $5.40 Per Filter

  • PS5-10C Pentek Comparable Sediment Water Filter by Tier1
  • S1 Pentek Comparable Whole House Water Filter by Tier1
  • Pentek CFB-PB10 Lead & Cyst Carbon Filter

    Pentek CFB-PB10 Lead & Cyst Carbon Filter

    $13.99 Retail Price:  $17.12
  • Pentek SCBC-10 Silvered Carbon Block

    Pentek SCBC-10 Silvered Carbon Block

    $22.99 Retail Price:  $24.71
  • RWC-5 American Plumber Undersink Filter Replacement Cartridge
  • AMERICAN-PLUMBER-W20CLA

    AMERICAN-PLUMBER-W20CLA

    $11.99 Retail Price:  $12.64
  • W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • AMERICAN-PLUMBER-W30PE

    AMERICAN-PLUMBER-W30PE

    $16.99 Retail Price:  $18.04

Items 1 to 48 of 104 total

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