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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. IHS22-D4 Trojan UV Disinfection System

    IHS22-D4 Trojan UV Disinfection System

    Uses a 20-inch Big Blue 5-micron sediment filter and a 20-inch Big Blue 5-micron carbon block filter before the UV treatment chamber Learn More
  2. Hydronix HF2-10CLWH12 Clear 10 inch Filter Housing

    Hydronix HF2-10CLWH12 Clear 10-inch x 2.5-inch Filter Housing

    Receives any standard 10-inch by 2.5-inch filter cartridge Learn More
    $15.99 Retail Price:  $22.99
  3. VH410M Viqua Home Plus UltraViolet Water Disinfection System

    VH410M Viqua Home Plus UltraViolet Water Disinfection System

    Fits standard 3/4-inch - 1-inch Combo NPT fittings Learn More
    $875.99 Retail Price:  $1125.00
  4. 650682 E4 Viqua Professional UltraViolet Water Disinfection System

    650682 E4 Viqua Professional UltraViolet Water Disinfection System

    Fits standard 1-inch inlet/outlet Learn More
    $885.99 Retail Price:  $1185.00
  5. 650683 E4+ Viqua UltraViolet Water Disinfection System

    650683 E4+ Viqua Professional Plus UltraViolet Water Disinfection System

    Fits standard 1-inch inlet/outlet Learn More
    $1,275.99 Retail Price:  $1695.00
  6. 660040-R E4-V Viqua UltraViolet Water Disinfection System

    660040-R E4-V Viqua Professional Plus UltraViolet Water Disinfection System

    Fits standard 1-inch inlet/outlet Learn More
    $965.99 Retail Price:  $1285.00
  7. 150564 Pentek Whole House Water Filter System (Clear/ Blue)

    150564 Pentek Whole House Water Filter System (Clear/ Blue)

    Fits Quick Connect 3/4-inch NPT Learn More
    $77.99
  8. 150072 Pentek 3/4-inch #10 Standard Blue/Clear Filter Housing

    150072 Pentek 3/4-inch #10 Standard Blue/Clear Filter Housing

    Fits 3/4-inch NPT inlet and outlet ports Learn More
    $27.99 Retail Price:  $34.99
  9. 158098 Pentek Slim Line Water Filter Housing System

    158098 Pentek Slim Line Water Filter Housing System

    Fits 3/8-inch NPT Inlet / Outlet Connection Learn More
    $15.99 Retail Price:  $19.99
  10. 158203 Pentek Slim Line Black/Blue w/PR Water Filter System

    158203 Pentek Slim Line Water Filter Housing

    Fits 1/2-inch Quick Connect NPT Learn More
    $16.99
  11. Hydronix HF45-10BLBK15 Filter Housing (Blue)

    Hydronix HF45-10BLBK15 Filter Housing (Blue)

    Accepts standard 10 x 4.5-inch filters Learn More
    $59.99 Retail Price:  $75.99
  12. Pentek HFPP-34-PR-20 Big Blue Whole House 20 inch Filter Housing
  13. HFPP-1-PR10 Pentek Big Blue Water Filter Housing
  14. HFPP-1-PR20 Pentek Big Blue Filter Housing
  15. PL44-122NAC15 Pentek Bag Filter Housing - Carbon Steel

    PL44-122NAC15 Pentek Bag Filter Housing - Carbon Steel

    Fits standard 2-inch water lines Learn More
  16. MPST-1 Pentek Multi-Purpose Cartridge and Bag Filter Housing - Stainless Steel

    MPST-1 Pentek Multi-Purpose Cartridge and Bag Filter Housing - Stainless Steel

    Fits standard 1.5-inch water lines. Learn More
    $1,450.99 Retail Price:  $1453.34
  17. W10-PR American Plumber Whole House Filter System
  18. W385-PR American Plumber Undersink Compact Filter System
  19. 3M Aqua-Pure AP101T Whole House Water Filter

    AP101T 3M Aqua-Pure Whole House Water Filtration System

    Fits onto 3/4-inch NPT water lines Learn More
    $103.99 Retail Price:  $137.99
  20. 3M Aqua-Pure AP200 Under Sink Water Filter
  21. 3M Aqua-Pure AP217 Under Sink Water Filter

    AP217 3M Aqua-Pure Undersink Filter Replacement Cartridge

    Fits 3M Aqua-Pure undersink water filter systems Learn More
    $36.99
  22. 3M Aqua-Pure AP430SS Water Heater Scale Inhibitor

    AP430SS 3M Aqua-Pure Water Heater Scale Inhibitor System

    Fits standard 3/4-inch water heater supply line. Learn More
    $70.99 Retail Price:  $90.84
  23. 3M Aqua-Pure AP431 Inline Filter Replacement Cartridge

    AP431 3M Aqua-Pure Inline Filter Replacement Cartridge

    Fits 3M Aqua-Pure AP430 and AP430-SS filtered hot water systems Learn More
    $30.99 Retail Price:  $35.64
  24. 3M Aqua-Pure AP717 Inline Water Filter

    AP717 3M Aqua-Pure Inline Filter System

    Fits any 1/4-inch plastic or copper water line Learn More
    $25.99 Retail Price:  $34.49
  25. 3M Aqua-Pure AP903 Water Filter System

    AP903 3M Aqua-Pure Water Filtration System

    Fits standard 1-inch pipe Learn More
    $239.99 Retail Price:  $342.69

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