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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. FC-600L PUR Flavor Options Flavor Options Replacement Cartridge

    FC-600L PUR Flavor Options Flavor Options Replacement Cartridge

    Fits only PUR Flavor Options Pitchers and Faucets Learn More
  2. FC-600S PUR Flavor Options Flavor Options Replacement Cartridge

    FC-600S PUR Flavor Options Flavor Options Replacement Cartridge

    Fits only PUR Flavor Options Pitchers and Faucets Learn More
  3. P1-5 Tier1 Sediment Filter Cartridge

    P1-5 Tier1 Sediment Filter Cartridge

    Sized 4 7/8 x 2 1/2 inches Learn More

    Regular Price: $4.99

    Special Price: $2.05

  4. P10-5 Tier1 Polypropylene Sediment Filter

    P10-5 Tier1 Polypropylene Sediment Filter

    Sized 4 7/8 x 2 1/2 inches Learn More

    Regular Price: $3.99

    Special Price: $2.55

  5. PX05-4-78 Purtrex Replacement Filter Cartridge

    PX05-4-78 Purtrex Replacement Water Filter Cartridge

    For use in filtration system housings that accept 2.5-inch x 5-inch replacement filters Learn More
    $2.99 MSRP:  $5.74
  6. KPPA Klean Kanteen Sippy-Top Bottle Adapter
  7. KBINER3 Klean Kanteen S-Biner #3 Stainless Steel S Shaped Carabiner
  8. 74-985001 3M Aqua-Pure Male Connection

    74-985001 3M Aqua-Pure Quick-Connect Male Connection

    Fits inline water filter cartridges with 1/4-inch female pipe thread fittings Learn More
    $3.99 MSRP:  $5.74
  9. W2160901 Doulton Candle Mount O-ring

    W2160901 Doulton Ceramic Water Filter Candle O-Ring

    Fits all Doulton short mount ceramic water filter candles Learn More
    $3.99 MSRP:  $5.74
  10. PS1-10C Pentek Whole House Replacement Sediment Filter Cartridge

    PS1-10C Pentek Whole House Replacement Sediment Filter Cartridge

    Fits most standard housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $3.99 MSRP:  $5.28
  11. PX20-9-78 Purtrex Replacement Filter Cartridge

    PX20-9-78 Purtrex Water Filter Cartridge

    Fits compact water filtration system housings that use 2.5-inch x 10-inch replacement filters Learn More
    $3.99 MSRP:  $5.74
  12. PX30-9-78 Purtrex Replacement Filter Cartridge

    PX30-9-78 Purtrex Replacement Water Filter Cartridge

    Fits filtration housings that use 2.5-inch x 10-inch replacement water filters Learn More
    $3.99 MSRP:  $6.89
  13. FPMB20-978 Watts Flo-Pro Replacement Filter Cartridge

    FPMB20-978 Watts Flo-Pro Replacement Water Filter

    Fits most standard water filtration system housings that use a 9 7/8-inch x 2 1/2-inch filter Learn More
    $3.99 MSRP:  $5.16
  14. KPPF Klean Kanteen Flat Cap

    KPPF Klean Kanteen Flat Cap

    Fits all Klean Kanteen bottle sizes Learn More
  15. KPPS Klean Kanteen Sport Cap

    KPPS Klean Kanteen Sport Cap

    Fits all Klean Kanteen bottle sizes Learn More
  16. KBINER4 Klean Kanteen S-Biner #4 Stainless Steel S Shaped Carabiner
  17. PX10-9-78 Purtrex Replacement Filter Cartridge

    PX10-9-78 Purtrex Replacement Water Filter

    Fits compact water filtration system housings that use 2.5-inch x 10-inch filters Learn More
    $4.05 MSRP:  $8.04
  18. SBC-25-1001 Hydronix Sediment Water Filter Cartridge

    SBC-25-1001 Hydronix Sediment Water Filter Cartridge

    1 micron filter, sized 10 x 2.5 inches Learn More
  19. KE25G1S Pentek Polyester Felt Bag Filter

    KE25G1S Pentek Polyester Felt Filter Bag

    Fits into both steel and aluminum filter housings that accept #1 filter bags Learn More
    $4.09 MSRP:  $7.00
  20. Funbottle-dfs-green Tier1 Water Bottle - Green
  21. SDC-25-1020 Hydronix Whole House Replacement Sediment Filter Cartridge

    SDC-25-1020 Hydronix Whole House Replacement Sediment Filter Cartridge

    Fits most housings that accept 10-inch x 2.5-inch water filter cartridges Learn More
    $4.99 MSRP:  $5.05
  22. KO50G4S Pentek Polypropylene Filter Bag

    KO50G4S Pentek Polypropylene Filter Bag

    Fits Pentek Carbon Steel, Stainless Steel and Aluminum Housings that accept #4 filter bags. Learn More
    $4.99 MSRP:  $5.85
  23. KO5G3S Pentek Polypropylene Bag Filter

    KO5G3S Pentek Polypropylene Filter Bags

    Fits Pentek Carbon Steel, Stainless Steel and Aluminum Housings that accept #3 filter bags Learn More
    $4.99 MSRP:  $7.00
  24. PX01-9-78 Purtrex Replacement Filter Cartridge

    PX01-9-78 Purtrex Replacement Filter Cartridge

    For use in filtration system housings that use 2.5-inch x 10-inch replacement filters Learn More
    $4.99 MSRP:  $8.04
  25. PX05-20 Purtrex Replacement Water Filter

    PX05-20 Purtrex Replacement Water Filter

    For filtration system housings that use 2.5-inch x 20-inch replacement water filters Learn More
    $4.99 MSRP:  $9.19

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