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Water Filtration

Water Filtration for the whole home and at-the-sink. Shop complete systems, filter housings and cartridges, RO drinking water, and maintenance parts to improve taste, reduce chlorine/chloramine, and protect fixtures and appliances.

Featured brands: 3M, American Granby, Campbell, Elkay, EWS (Environmental Water Systems), The Source (twistIIClean), and Zurn Wilkins. Browse each brand below or filter to the exact type you need.

Shop by need

  • Whole-home systems: carbon filtration for city water; options with salt-free conditioning to help with scale (model dependent)
  • Under-sink drinking water: high-flow faucet filters, compact multi-stage kits, and RO (reverse osmosis) systems
  • Filter housings & cartridges: standard and high-flow sizes, sediment, carbon block/GAC, specialty media
  • Accessories & parts: install kits, valves, gauges, O-rings, wrenches, and replacement cartridges

Quick choosing guide

  1. Start with your source: municipal (chlorine/chloramine) vs well water—match filters or systems accordingly.
  2. Pick the application: whole-home (showers, laundry, appliances) or point-of-use (drinking/cooking at the sink).
  3. Size for flow: select system/house size to maintain pressure; match cartridge size (10", 20", “BB”) and micron rating to your goal.
  4. Taste vs maximum reduction: high-flow carbon for everyday taste/odor vs RO for maximum dissolved-solid reduction at a faucet.
  5. Plan maintenance: note change intervals (typically 6–12 months for cartridges; multi-year media on whole-home units).


  • EWS RO4-UV reverse osmosis system component kit with optional UV protection
    EWS RO4 four-stage under sink reverse osmosis drinking water system

    EWS RO4 and RO4-UV Four-Stage Under Sink Reverse Osmosis Systems

    EWS
    $ 951.75 - $ 1,026.75
    $ 951.75 - $ 1,026.75
    $ 951.75 - $ 1,026.75
    $ 951.75

    EWS RO4 and RO4-UV Four-Stage Under Sink Reverse Osmosis Systems Brand: EWS | SKUs: RO4, RO4-UV Product Overview The EWS RO4 and RO4-UV are fou...

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    $ 951.75 - $ 1,026.75
    $ 951.75 - $ 1,026.75
    $ 951.75 - $ 1,026.75
    $ 951.75
  • EWS F.SET.RO4 replacement filter set for RO4 reverse osmosis systems
    EWS F.SET.RO4-UV replacement filter set with UV lamp

    EWS F.SET.RO4 Replacement Filter Sets for RO4 and RO4-UV Systems

    EWS
    $ 486.75 - $ 591.75
    $ 486.75 - $ 591.75
    $ 486.75 - $ 591.75
    $ 486.75

    EWS F.SET.RO4 Replacement Filter Sets for RO4 and RO4-UV Systems Brand: EWS | SKUs: F.SET.RO4, F.SET.RO4-UV Product Overview The EWS F.SET.RO4 ...

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    $ 486.75 - $ 591.75
    $ 486.75 - $ 591.75
    $ 486.75 - $ 591.75
    $ 486.75
  • EWS RO3-UV under sink reverse osmosis system with UV protection
    EWS RO3 three-stage under sink reverse osmosis drinking water system

    EWS RO3 and RO3-UV Three-Stage Under Sink Reverse Osmosis Systems

    EWS
    $ 876.75 - $ 1,071.75
    $ 876.75 - $ 1,071.75
    $ 876.75 - $ 1,071.75
    $ 876.75

    EWS RO3 and RO3-UV Three-Stage Under Sink Reverse Osmosis Systems Brand: EWS | SKUs: RO3, RO3-UV Product Overview The EWS RO3 and RO3-UV are th...

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    $ 876.75 - $ 1,071.75
    $ 876.75 - $ 1,071.75
    $ 876.75 - $ 1,071.75
    $ 876.75
  • EWS F.SET.RO3-UV replacement filter set with UV lamp
    EWS F.SET.RO3 replacement filter set for RO3 reverse osmosis systems

    EWS F.SET.RO3 Replacement Filters for RO3 and RO3-UV Systems

    EWS
    $ 426.75 - $ 531.75
    $ 426.75 - $ 531.75
    $ 426.75 - $ 531.75
    $ 426.75

    EWS F.SET.RO3 Replacement Filters for RO3 and RO3-UV Systems Brand: EWS | SKUs: F.SET.RO3, F.SET.RO3-UV Product Overview The EWS F.SET.RO3 and ...

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    $ 426.75 - $ 531.75
    $ 426.75 - $ 531.75
    $ 426.75 - $ 531.75
    $ 426.75
  • EWS DWS-UV under sink filtration system with UV disinfection detail
    EWS DWS-UV three-stage under sink drinking water system with ultraviolet protection

    EWS DWS-UV Essential Under Sink Drinking Water System with UV Protection

    EWS
    $ 704.25 - $ 704.25
    $ 704.25
    $ 704.25 - $ 704.25
    $ 704.25

    EWS DWS-UV Essential Under Sink Drinking Water System with UV Protection Brand: EWS | SKU: DWS-UV Product Overview The EWS DWS-UV is an under s...

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    $ 704.25 - $ 704.25
    $ 704.25
    $ 704.25 - $ 704.25
    $ 704.25
  • EWS DWS under sink drinking water system kit breakdown
    EWS DWS Essential three-stage under sink drinking water filtration system

    EWS DWS Essential Under Sink Drinking Water System

    EWS
    $ 509.25 - $ 509.25
    $ 509.25
    $ 509.25 - $ 509.25
    $ 509.25

    EWS DWS Essential Under Sink Drinking Water System Brand: EWS | SKU: DWS Product Overview The EWS DWS Essential Drinking Water System is an und...

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    $ 509.25 - $ 509.25
    $ 509.25
    $ 509.25 - $ 509.25
    $ 509.25
  • EWS F.SET.DWS Essential under sink replacement filter set

    EWS F.SET.DWS Replacement Filter Set for DWS Drinking Water System

    EWS
    $ 246.75 - $ 246.75
    $ 246.75
    $ 246.75 - $ 246.75
    $ 246.75

    EWS F.SET.DWS Replacement Filter Set for DWS Drinking Water System Brand: EWS | SKU: F.SET.DWS Product Overview The EWS F.SET.DWS is the replac...

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    $ 246.75 - $ 246.75
    $ 246.75
    $ 246.75 - $ 246.75
    $ 246.75
  • EWS SS-2.5 Max Flow filter setup detail
    EWS SS-2.5 Max Flow high-flow under sink drinking water filtration system

    EWS SS-2.5 Max Flow Under Sink Drinking Water Filtration System

    EWS
    $ 348.75 - $ 348.75
    $ 348.75
    $ 348.75 - $ 348.75
    $ 348.75

    EWS SS-2.5 Max Flow Under Sink Drinking Water Filtration System Brand: EWS | SKU: SS-2.5 Product Overview The EWS SS-2.5 Max Flow is a high-flo...

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    $ 348.75 - $ 348.75
    $ 348.75
    $ 348.75 - $ 348.75
    $ 348.75
  • EWS F.SET.SS-2.5 Max Flow replacement filter cartridge

    EWS F.SET.SS-2.5 Replacement Filter for SS-2.5 Max Flow System

    EWS
    $ 186.75 - $ 186.75
    $ 186.75
    $ 186.75 - $ 186.75
    $ 186.75

    EWS F.SET.SS-2.5 Replacement Filter for SS-2.5 Max Flow System Brand: EWS | SKU: F.SET.SS-2.5 Product Overview The EWS F.SET.SS-2.5 is the repl...

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    $ 186.75 - $ 186.75
    $ 186.75
    $ 186.75 - $ 186.75
    $ 186.75
  • EWS SS-1.0 under sink single stage filtration system component detail
    EWS SS-1.0 single stage under sink drinking water filtration system

    EWS SS-1.0 Single Stage Under Sink Drinking Water Filtration System

    EWS
    $ 183.75 - $ 183.75
    $ 183.75
    $ 183.75 - $ 183.75
    $ 183.75

    EWS SS-1.0 Single Stage Under Sink Drinking Water Filtration System Brand: EWS | SKU: SS-1.0 Product Overview The EWS SS-1.0 is a single stage ...

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    $ 183.75 - $ 183.75
    $ 183.75
    $ 183.75 - $ 183.75
    $ 183.75
  • EWS F.SET.SS-1.0 replacement filter for SS-1.0 single stage system

    EWS F.SET.SS-1.0 Replacement Filter for SS-1.0 System

    EWS
    $ 111.75 - $ 111.75
    $ 111.75
    $ 111.75 - $ 111.75
    $ 111.75

    EWS F.SET.SS-1.0 Replacement Filter for SS-1.0 System Brand: EWS | SKU: F.SET.SS-1.0 Product Overview The EWS F.SET.SS-1.0 is the replacement c...

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    $ 111.75 - $ 111.75
    $ 111.75
    $ 111.75 - $ 111.75
    $ 111.75
  • EWS Heater Guard 1.5 inch sediment and scale protection system

    EWS Heater Guard 1.5 in. Sediment and Scale Protection System

    EWS
    $ 492.75 - $ 492.75
    $ 492.75
    $ 492.75 - $ 492.75
    $ 492.75

    EWS Heater Guard 1.5 in. Sediment and Scale Protection System Brand: EWS | SKU: EWS-HEATER-GUARD-1.5 Product Overview The EWS Heater Guard 1.5 ...

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    $ 492.75 - $ 492.75
    $ 492.75
    $ 492.75 - $ 492.75
    $ 492.75
  • EWS Heater Guard 3/4 inch sediment and scale protection system

    EWS Heater Guard 3/4 in. Sediment and Scale Protection System

    EWS
    $ 417.75 - $ 417.75
    $ 417.75
    $ 417.75 - $ 417.75
    $ 417.75

    EWS Heater Guard 3/4 in. Sediment and Scale Protection System Brand: EWS | SKU: EWS-HEATER-GUARD-3/4 Product Overview The EWS Heater Guard 3/4 ...

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    $ 417.75 - $ 417.75
    $ 417.75
    $ 417.75 - $ 417.75
    $ 417.75
  • EWS BB-GUARD-FILTER-3/4 replacement cartridge for Heater Guard 3/4 inch system
    EWS BB-Guard replacement filter cartridge for Heater Guard systems

    EWS BB-GUARD-FILTER-3/4 Replacement Cartridge for Heater Guard 3/4 in.

    EWS
    $ 119.25 - $ 119.25
    $ 119.25
    $ 119.25 - $ 119.25
    $ 119.25

    EWS BB-GUARD-FILTER-3/4 Replacement Cartridge for Heater Guard 3/4 in. Brand: EWS | SKU: BB-Guard-Filter-3/4 Product Overview The EWS BB-GUARD-...

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    $ 119.25 - $ 119.25
    $ 119.25
    $ 119.25 - $ 119.25
    $ 119.25
  • EWS BB-GUARD-FILTER-1.5 replacement cartridge for Heater Guard 1.5 inch system
    EWS BB-Guard replacement filter cartridge for Heater Guard systems

    EWS BB-GUARD-FILTER-1.5 Replacement Cartridge for Heater Guard 1.5 in.

    EWS
    $ 201.75 - $ 201.75
    $ 201.75
    $ 201.75 - $ 201.75
    $ 201.75

    EWS BB-GUARD-FILTER-1.5 Replacement Cartridge for Heater Guard 1.5 in. Brand: EWS | SKU: BB-Guard-Filter-1.5 Product Overview The EWS BB-GUARD-...

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    $ 201.75 - $ 201.75
    $ 201.75
    $ 201.75 - $ 201.75
    $ 201.75
  • EWS BB-FUGAC200A-1 whole house filtration system components and replacement filters
    EWS BB-FUGAC200A-1 two-stage point of entry whole house water filtration system

    EWS BB-FUGAC200A-1 Two-Stage Whole House Water Filtration System

    EWS
    $ 794.25 - $ 794.25
    $ 794.25
    $ 794.25 - $ 794.25
    $ 794.25

    EWS BB-FUGAC200A-1 Two-Stage Whole House Water Filtration System Brand: EWS | SKU: BB-FUGAC200A-1 Product Overview The EWS BB-FUGAC200A-1 is a ...

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    $ 794.25 - $ 794.25
    $ 794.25
    $ 794.25 - $ 794.25
    $ 794.25
  • EWS BB-PRESED-50-SW replacement pre-filter cartridge detail
    EWS BB-PRESED-50-SW replacement pre-filter for two-stage sediment system

    EWS BB-PRESED-50-SW 20 in. Sediment Pre-Filter Cartridge, 50 Micron

    EWS
    $ 126.75 - $ 126.75
    $ 126.75
    $ 126.75 - $ 126.75
    $ 126.75

    EWS BB-PRESED-50-SW 20 in. Sediment Pre-Filter Cartridge, 50 Micron Brand: EWS | SKU: BB-PRESED-50-SW Product Overview The EWS BB-PRESED-50-SW ...

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    $ 126.75 - $ 126.75
    $ 126.75
    $ 126.75 - $ 126.75
    $ 126.75
  • EWS BB-GACB-10RFA replacement filter for two-stage sediment system

    EWS BB-GACB-10RFA 20 in. Radial Flow Carbon Block Replacement Filter

    EWS
    $ 373.50 - $ 373.50
    $ 373.50
    $ 373.50 - $ 373.50
    $ 373.50

    EWS BB-GACB-10RFA 20 in. Radial Flow Carbon Block Replacement Filter Brand: EWS | SKU: BB-GACB-10RFA Product Overview The EWS BB-GACB-10RFA is ...

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    $ 373.50 - $ 373.50
    $ 373.50
    $ 373.50 - $ 373.50
    $ 373.50
  • A pile of black granular activated carbon media for water filtration systems.
    EWS whole house media replacement kit with tank, carbon media, and service components

    EWS Replacement Tank Kits with Media for EWS Series Systems

    EWS
    $ 2,240.25 - $ 3,740.25
    $ 2,240.25 - $ 3,740.25
    $ 2,240.25 - $ 3,740.25
    $ 2,240.25

    EWS Replacement Tank Kits with Media for EWS Series Systems Brand: EWS | Series: EWS Replacement Tank Kits Product Overview EWS replacement tan...

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    $ 2,240.25 - $ 3,740.25
    $ 2,240.25 - $ 3,740.25
    $ 2,240.25 - $ 3,740.25
    $ 2,240.25
  • EWS ICN/GAC1035 systems media replacement kit without tank

    EWS Media Replacement Kits Less Tank for EWS Systems

    EWS
    $ 2,015.25 - $ 4,940.25
    $ 2,015.25 - $ 4,940.25
    $ 2,015.25 - $ 4,940.25
    $ 2,015.25

    EWS Media Replacement Kits Less Tank for EWS Systems Brand: EWS | SKUs: ICN/GAC1035, ICN/GAC1054, ICN/GAC1354, ICN/GAC1665, ICN/GAC-SPECTRUM Pr...

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    $ 2,015.25 - $ 4,940.25
    $ 2,015.25 - $ 4,940.25
    $ 2,015.25 - $ 4,940.25
    $ 2,015.25
  • EWS T-M/GAC1054 replacement carbon tank for CWL-1054 whole house system
    EWS CWL replacement carbon filtration tank for whole house systems

    EWS T-M/GAC1054 CWL-1054 Replacement Carbon Tank

    EWS
    $ 1,691.25 - $ 1,691.25
    $ 1,691.25
    $ 1,691.25 - $ 1,691.25
    $ 1,691.25

    EWS T-M/GAC1054 CWL-1054 Replacement Carbon Tank Brand: EWS | SKU: T-M/GAC1054 Product Overview The EWS T-M/GAC1054 is a replacement carbon tan...

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    $ 1,691.25 - $ 1,691.25
    $ 1,691.25
    $ 1,691.25 - $ 1,691.25
    $ 1,691.25
  • EWS T-M/GAC1035 replacement carbon tank for CWL-1035 whole house system
    EWS CWL replacement carbon filtration tank for whole house systems

    EWS T-M/GAC1035 CWL-1035 Replacement Carbon Tank

    EWS
    $ 1,466.25 - $ 1,466.25
    $ 1,466.25
    $ 1,466.25 - $ 1,466.25
    $ 1,466.25

    EWS T-M/GAC1035 CWL-1035 Replacement Carbon Tank Brand: EWS | SKU: T-M/GAC1035 Product Overview The EWS T-M/GAC1035 is a replacement carbon tan...

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    $ 1,466.25 - $ 1,466.25
    $ 1,466.25
    $ 1,466.25 - $ 1,466.25
    $ 1,466.25
  • EWS whole house water filtration and conditioning system product image

    EWS-1035 Whole House Filtration and Salt-Free Conditioning System

    EWS
    $ 3,221.25 - $ 3,221.25
    $ 3,221.25
    $ 3,221.25 - $ 3,221.25
    $ 3,221.25

    EWS-1035 Whole House Filtration and Salt-Free Conditioning System Brand: EWS | SKU: EWS-1035 Product Overview The EWS-1035 is a whole-house fil...

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    $ 3,221.25 - $ 3,221.25
    $ 3,221.25
    $ 3,221.25 - $ 3,221.25
    $ 3,221.25
  • EWS PLV-60-14 60 PSI pressure limiting valve

    EWS PLV-60-14 60 PSI Point-of-Use Pressure Limiting Valve

    EWS
    $ 78.75 - $ 78.75
    $ 78.75
    $ 78.75 - $ 78.75
    $ 78.75

    EWS PLV-60-14 60 PSI Point-of-Use Pressure Limiting Valve Brand: EWS | SKU: PLV-60-14 Product Overview The EWS PLV-60-14 is a point-of-use pres...

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    $ 78.75 - $ 78.75
    $ 78.75
    $ 78.75 - $ 78.75
    $ 78.75

Pro tips: Install whole-home systems after the meter/PRV and before branches; bypass hose bibbs if you want untreated outdoor taps. Always flush new cartridges, keep spare O-rings on hand, and set a reminder for filter changes. Not sure where to start? Tell us city/well, pipe size, and what you want to improve—taste, odor, chlorine/chloramine, or scale—and we’ll dial it in.

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