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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. WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge

    WFDWC70001 DuPont Universal Drinking Water Carbon Block Cartridge

    Fits WFDW120009W DuPont Universal Drinking Water Filter System and other brands of 10-inch standard-size filter systems Learn More
  2. W9121214 Doulton ATC Super Sterasyl Replacement Element

    W9121214 Doulton ATC Super Sterasyl Ceramic Water Filter

    Fits all Doulton Gravity systems Learn More
    $25.99 MSRP:  $47.91
  3. W9121715 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9121715 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    Fits Doulton gravity fed systems Learn More
    $36.99 MSRP:  $41.41
  4. W9121750 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    W9121750 Doulton Supersterasyl Undersink Ceramic Candle Replacement Filter Cartridge

    Fits Doulton HIP, HIS and HCPS housings (NOT gravity-fed) Learn More
    $34.09 MSRP:  $41.50
  5. W9361122 Doulton Countertop Filter System

    W9361122 Doulton SS2 Countertop Filter System

    Fits 2 long thread 7 inch by 2 inch filter candles Learn More
    $199.97 MSRP:  $232.27
  6. EV9275-70 Everpure QL2-OW200L Filter System

    EV9275-70 Everpure QL2-OW200L Filter System

    Regular Price: $101.99

    Special Price: $70.05

  7. F5-CHROME Instapure Complete Faucet Filter System - Chrome

    F5-CHROME Instapure Complete Faucet Filter System - Chrome

    Fits most standard kitchen water faucets Learn More
    $21.99 MSRP:  $27.59
  8. F5-WHITE Instapure Complete Faucet Filter System - White

    F5-WHITE Instapure Complete Faucet Filter System - White

    Fits most standard kitchen water faucets Learn More
    $16.99 MSRP:  $21.84
  9. R5-1PK Instapure Complete Faucet Filter Replacement Cartridge

    R5-1PK Instapure Complete Faucet Filter Replacement Cartridge

    Fits the Instapure F5 Faucet Water Filter System Learn More
    $16.99 MSRP:  $17.93
  10. R5-2PK Instapure Complete Faucet Filter Replacement Cartridge (2-Pack)

    R5-2PK Instapure Complete Faucet Filter Replacement Cartridge (2-Pack)

    Fits the Instapure F5 Faucet Water Filter System Learn More
    $23.99 MSRP:  $25.29
  11. W9223022 Doulton Replacement Ceramic Filter

    W9223022 Doulton Ultracarb Replacement Ceramic Filter

    Fits most standard 2.5-inch by 10-inch filter housings Learn More
    $70.99 MSRP:  $82.65
  12. W9123085 Doulton Imperial UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge

    W9123085 Doulton Imperial UltraCarb Undersink Ceramic Candle Replacement Filter Cartridge

    Fits all Doulton short mount Countertop, Undersink and Inline Systems Learn More
    $65.99 MSRP:  $109.65
  13. C-200 Rainshow’r Condor Drinking Water Filtration System

    C-200 Rainshow’r Condor Drinking Water Filtration System

    Uses the RC-0.5 water filter Learn More
    $199.99 MSRP:  $232.29
  14. RC-0.5 Rainshow’r Replacement Water Filter

    RC-0.5 Rainshow’r Replacement Water Filter

    Fits into the C-200 Condor or BT-300 Breakthrough water filtration systems by Rainshow'r Learn More
    $92.99 MSRP:  $115.00
  15. BT-300 Rainshow’r Breakthrough Drinking Water Filtration System

    BT-300 Rainshow’r Breakthrough Drinking Water Filtration System

    Uses the RC-0.5 water filter Learn More
    $110.99 MSRP:  $165.99
  16. R5 Instapure Complete Faucet Filter Replacement Cartridge (4-Pack)

    R5 Instapure Complete Faucet Filter Replacement Cartridge (4-Pack)

    Fits the Instapure F5 Faucet Water Filter System Learn More

    (Retail Price: $54.04 ) $44.99

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