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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. WP-5 Pentek Replacement Filter Cartridge

    WP-5 Pentek Replacement Filter Cartridge

    Fits most standard housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $7.99 Retail Price:  $8.84
  2. WP5BB20P Pentek Replacement Filter Cartridge

    WP5BB20P Pentek Replacement Filter Cartridge

    Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges Learn More
    $35.99 Retail Price:  $42.54
  3. WS-10 Pentek Water Softening Filter

    WS-10 Pentek Water Softening Filter

    Fits most standard housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $20.99 Retail Price:  $24.83
  4. WS-20 Pentek Water Softening Filter

    WS-20 Pentek Water Softening Filter

    Fits most standard housings that accept 20-inch x 2.5-inch water filter cartridges Learn More
    $26.99 Retail Price:  $35.64
  5. 153017 Pentek Slim Line Filter Housing Sump - Blue

    153017 Pentek Slim Line Filter Housing Sump - Blue

    Fits the cap of SY-5197 10-inch Slim Line Housings, as well as other countertop and undersink systems Learn More
    $11.29 Retail Price:  $15.28
  6. CFB-Plus10 Pentek Replacement Filter Cartridge

    CFB-Plus10 Pentek Replacement Water Filter Cartridge

    Fits most standard sized water filtration system housings that accept 10-inch x 2.5-inch filter cartridges Learn More
    $9.99 Retail Price:  $14.13

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