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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. 4002124 American Plumber Whole House Sediment Filter System

    4002124 American Plumber Whole House Sediment Filter System

    Fits standard 1-inch water lines Learn More
    $699.99 Retail Price:  $807.29
  2. RS7-SS OmniFilter Whole House Filter Replacement Cartridge

    RS7-SS OmniFilter Whole House Water Filter Replacement Cartridge

    Fits any brand of whole house water filtration system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $7.99 Retail Price:  $8.38
  3. FAF-ADP SteriPEN FitsAll Water Bottle Filter

    FAF-ADP SteriPEN FitsAll Water Bottle Filter

    Fits both narrow and wide mouth water containers, including canteens and commercial water bottles from SIGG, Klean Kanteen, Nalgene, and many more Learn More
    $12.99 Retail Price:  $17.24
  4. JY-UPF-RP SteriPEN Portable UV System

    JY-UPF-RP SteriPEN Portable UV System

    Fits both narrow and wide mouth water containers, including canteens and commercial water bottles from SIGG, Klean Kanteen, Nalgene, and many more. Learn More
  5. SIDE-SYS SteriPEN Portable UV System

    SIDE-SYS SteriPEN Portable UV System

    $86.99 Retail Price:  $102.34
  6. SP-PF SteriPEN Wide Mouth Water Bottle Pre-Filter

    SP-PF SteriPEN Wide Mouth Water Bottle Pre-Filter

    Fits containers with minimum 1.75-inch diameter opening, like Nalgene wide-mouth bottles and others Learn More
    $14.99 Retail Price:  $16.09
  7. SP-RC SteriPEN Water Bottle Replacement Filter Cartridge

    SP-RC SteriPEN Water Bottle Replacement Filter Cartridge

    Fits the SterPEN pre-filter and FitsAll filter Learn More
    $6.29 Retail Price:  $9.53
  8. SP-SYS SteriPEN Classic UV Water Purifier with Pre-Filter and Nalgene Water Bottle
  9. SPPF-RP SteriPEN Portable UV System

    SPPF-RP SteriPEN Portable UV System

    Fits containers with minimum 1.75-inch diameter opening, like Nalgene wide-mouth bottles and others Learn More
    $59.99 Retail Price:  $71.29

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