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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 83 total

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  • Pentek EP-10 Replacement Water Filter Cartridge

    EP-10 Pentek Replacement Filter Cartridge

    As Low As $7.80 Per Filter

  • F2-WHITE Instapure Essentials Faucet Filter System - White
  • Pentek 255579-43 Inline Sediment Water Filter Replacement
  • 255541-43 Pentek Inline Water Filter Replacement
  • WFDWC20001 DuPont Universal Drinking Water Carbon Block Cartridge
  • CB1-10 Pentek Carbon Block Water Filter Replacement

    CB1-10 Pentek Carbon Block Water Filter Replacement

    $14.99 Retail Price:  $19.99
  • CBC-10 Pentek Replacement Water Filter
  • AF-10-2010 Aries GAC/KDF Water Filter Cartridge

    AF-10-2010 Aries GAC/KDF Water Filter Cartridge

    $16.99 Retail Price:  $22.99
  • OMNIPURE-K5520SS

    OMNIPURE-K5520SS

    $19.05 Retail Price:  $27.59
  • Pentek CHLORPLUS-10 Whole House Water Filter Replacement Cartridge
  • Pentek WS-10 Water Softening Water Filter

    WS-10 Pentek Water Softening Filter

    As Low As $19.66 Per Filter

  • WATTS-AICRO-JGK

    WATTS-AICRO-JGK

    $10.99
  • R2-2PK Instapure Essentials Faucet Filter Replacement Cartridge (2-Pack)
  • CL10ROT33-B Omnipure Inline Filter

    CL10ROT33-B Omnipure Inline Filter

    $10.99 Retail Price:  $13.79
  • OMNIPURE-K2333-JJ

    OMNIPURE-K2333-JJ

    $10.99 Retail Price:  $13.79
  • OMNIPURE-CL10ROT33-A

    OMNIPURE-CL10ROT33-A

    $10.99
  • E5320 Omnipure Replacement Filter Cartridge

    E5320 Omnipure Replacement Filter Cartridge

    Regular Price: $12.99

    Special Price: $11.05

  • K5528-BB Omnipure Carbon Inline Water Filter

    K5528-BB Omnipure Carbon Inline Water Filter

    Regular Price: $11.99

    Special Price: $11.05

  • Q5505 Omnipure Water Filter

    Q5505 Omnipure Water Filter

    $11.49 Retail Price:  $15.51
  • IC-750 Culligan Inline Filter
  • TS-101L Pentek Lime/Scale Inline Filter

    TS-101L Pentek Lime/Scale Inline Filter

    $11.99 Retail Price:  $15.28
  • WHIRLPOOL-WHKF-IMTO

    WHIRLPOOL-WHKF-IMTO

    $11.99 Retail Price:  $14.94
  • K2533JJ Omnipure Water Filter

    K2533JJ Omnipure Water Filter

    $11.99 Retail Price:  $13.79
  • OMNIPURE-K2540-JJ

    OMNIPURE-K2540-JJ

    $11.99 Retail Price:  $16.09
  • QNVH-BB Omnipure Twist Tap 1/4-inch NPT Non-Valved Filter Head

    QNVH-BB Omnipure Twist-Tap Water Filter Head

    $11.99 Retail Price:  $16.09
  • K2305-KK Omnipure Inline Sediment Filters

    K2305-KK Omnipure Inline Sediment Filters

    $11.99 Retail Price:  $24.14
  • C-2 Culligan RV Filter Replacement Cartridge (2-Pack)
  • CULLIGAN-IC-100-D

    CULLIGAN-IC-100-D

    $12.99 Retail Price:  $16.78
  • OMNIPURE-CL10PF5-B

    OMNIPURE-CL10PF5-B

    $12.99 Retail Price:  $13.79
  • K2333-KK Omnipure Inline Filter

    K2333-KK Omnipure Inline Filter

    $12.99 Retail Price:  $13.79
  • K2505-JJ Omnipure Sediment Inline Filter

    K2505-JJ Omnipure Sediment Inline Filter

    $12.99 Retail Price:  $16.09
  • SCL10-B Omnipure Scale Inline Filter

    SCL10-B Omnipure Scale Inline Filter

    $12.99 Retail Price:  $17.24
  • K5605-BB Omnipure Inline Sediment Filter

    K5605-BB Omnipure Inline Sediment Filter

    $12.99 Retail Price:  $17.24
  • OMNIPURE-Q5405

    OMNIPURE-Q5405

    $12.99
  • WIC-6A American Plumber Inline Icemaker Filter

    WIC-6A American Plumber Inline Icemaker Filter

    $13.99 Retail Price:  $14.94
  • FM-15RA Culligan Level 3 Faucet Filter Replacement Cartridge
  • K2533-KK Omnipure Inline Filter

    K2533-KK Omnipure Inline Filter

    $13.99 Retail Price:  $14.94
  • K5605-JJ Omnipure Sediment Inline Filter

    K5605-JJ Omnipure Sediment Inline Filter

    $13.99 Retail Price:  $18.39
  • Q5486 Omnipure Twist-Tap Inline Filter Replacement Cartridge
  • OMNIPURE-Q5528

    OMNIPURE-Q5528

    $13.99 Retail Price:  $17.24
  • WICA American Plumber Inline Filter with 1/4 inch Quick-Connect Fittings
  • K5633JJ Omnipure Inline GAC Filter Cartridge

    K5633JJ Omnipure Inline GAC Filter Cartridge

    $14.39 Retail Price:  $18.85
  • K5633KK Omnipure Inline GAC Filter Cartridge

    K5633KK Omnipure Inline Water Filter Cartridge

    $14.39 Retail Price:  $18.85
  • GAC-5 Pentek Replacement Filter Cartridge
  • R200 OmniFilter Inline Filter System

    R200 OmniFilter Inline Water Filtration System

    $14.99 Retail Price:  $16.09
  • K2567-BB Omnipure Inline Filter

    K2567-BB Omnipure Inline Filter

    $14.99 Retail Price:  $19.54
  • K5586-JJ Omnipure Inline Phosphate Filter

    K5586-JJ Omnipure Inline Phosphate Filter

    $14.99 Retail Price:  $19.54
  • Q5386 Omnipure Inline Filter Replacement Cartridge

    Q5386 Omnipure Inline Filter Replacement Cartridge

    $14.99 Retail Price:  $20.00

Items 1 to 48 of 83 total

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