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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. 002045 Viqua Replacement O-Ring

    002045 Viqua Replacement O-Ring

    $2.99 Retail Price:  $5.34
  2. PS5-10C Pentek Comparable Sediment Water Filter by Tier1

    PS5-10C Pentek Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 10 x 2.5-inch filters Learn More
    $4.99 Retail Price:  $6.99
  3. P5-478 Pentek Comparable Sediment Water Filter by Tier1

    P5-478 Pentek Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 5 x 2.5-inch filters Learn More
    $4.99 Retail Price:  $7.99
  4. 155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1

    155014-43 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $4.99
  5. PD-25-934 Pentek Comparable Whole House Water Filter by Tier1
  6. RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

    RS2SS OmniFilter Comparable Whole House Water Filter by Tier1

    Fits most standard 10 x 2.5-inch filter housings Learn More
    $4.99 Retail Price:  $9.99
  7. P5-10 Tier1 Sediment Water Filter

    P5-10 Tier1 Sediment Water Filter

    Fits into most industry standard 10-inch water filtration system housings Learn More

    As Low As $3.42 Per Filter

  8. CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1

    CW-MF Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $5.99 Retail Price:  $9.99
  9. CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1

    CW-50 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More
    $5.99 Retail Price:  $9.99
  10. 155016-43 Pentek Comparable Whole House Water Filter by Tier1

    155016-43 Pentek Comparable Whole House Water Filter by Tier1

    Fits standard 20-inch by 2.5-inch filter housings Learn More
    $5.99
  11. P1 Pentek 10 x 2.5-inch Whole House Sediment Water Filter Replacement

    P1 Pentek Comparable Whole House Sediment Water Filter by Tier1

    Fits most standard 10 x 2.5-inch housings Learn More

    As Low As $5.00 Per Filter

  12. P1-20 Pentek Comparable Sediment Water Filter by Tier1

    P1-20 Pentek Comparable Sediment Water Filter by Tier1

    Fits standard filter housings using 20 x 2.5-inch filters Learn More
    $6.99 Retail Price:  $10.99
  13. S1A-D Culligan Comparable Whole House Sediment Water Filter 2-Pack by Tier1
  14. RS1SS OmniFilter Comparable Whole House Water Filter by Tier1

    RS1SS OmniFilter Comparable Whole House Water Filter by Tier1

    Fits OmniFilter RS1-SS and GE FXWPC Learn More
    $6.99 Retail Price:  $10.99
  15. 602665 Viqua UltraViolet Lamp Sleeve Bolt

    602665 Viqua UltraViolet Lamp Sleeve Bolt

    Fits eligible Viqua UV disinfection systems Learn More
    $6.99 Retail Price:  $9.34
  16. KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter

    KX Matrikx CTO2-12 Reverse Osmosis Carbon Block Replacement Filter

    Fits Culligan AC15, AC30, LC50, and H83 Reverse Osmosis systems Learn More
    $6.99 Retail Price:  $10.99
  17. P5-20 Tier1 Sediment Water Filter

    P5-20 Tier1 Whole House Sediment Water Filter

    Sized 20 x 2.5 inches Learn More

    As Low As $6.00 Per Filter

  18. SB-2R Water Bottle Replacement Filters (2-Pack)

    SB-2R Water Bottle Replacement Filters (2-Pack)

    Fits Culligan, Innova, Rubbermaid, Waterway filtered water bottles Learn More

    Regular Price: $7.99

    Special Price: $7.05

  19. WFFMC100X DuPont Faucet Mount Replacement Cartridge - High Protection Filter
  20. W20CLA American Plumber Comparable Whole House Water Filter by Tier1

    W20CLA American Plumber Comparable Whole House Water Filter by Tier1

    Standard 10 inch by 2.5 inch size fits many standard size filter housings Learn More
    $7.99 Retail Price:  $10.99
  21. S1 Pentek Comparable Whole House Water Filter by Tier1

    S1 Pentek Comparable Whole House Water Filter by Tier1

    Fits PENTEK-S1 and GE FXWPC Learn More
    $7.99 Retail Price:  $8.99
  22. AP-GRMB-10PP-10UB Whole House Water Filter Replacement Cartridge

    3M Aqua-Pure AP-GRMB-10PP-10 Whole House Water Filter Replacement

    Fits most standard 10 inch x 2 1/2 inch housings Learn More
    $7.99 Retail Price:  $10.34
  23. AP-GRMB-20PP-10UB Whole House Water Filter Cartridge by 3M Aqua-Pure

    AP-GRMB-20PP-10UB Whole House Replacement Filter by 3M Aqua-Pure

    Fits most standard 10-inch x 2.5-inch housings Learn More
    $7.99 Retail Price:  $10.34
  24. SPC-25-1001 Hydronix Pleated Sediment Filter

    SPC-25-1001 Hydronix Pleated Sediment Water Filter

    1 micron filter, sized 9 7/8x2.5 inches Learn More

    As Low As $6.17 Per Filter

  25. SPC-25-1020 Hydronix Sediment Water Filter

    SPC-25-1020 Hydronix Pleated Sediment Water Filter

    9 7/8 inches by 2.5 inches, 20 micron. Fits into filtration systems that use Liquatec SPF-25-1020, Pentek 255483-43 and Watts FM-20-975 water filters Learn More

    As Low As $5.50 Per Filter

Items 1 to 25 of 270 total

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