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
- Start with your source: municipal (chlorine/chloramine) vs well water—match filters or systems accordingly.
- Pick the application: whole-home (showers, laundry, appliances) or point-of-use (drinking/cooking at the sink).
- Size for flow: select system/house size to maintain pressure; match cartridge size (10", 20", “BB”) and micron rating to your goal.
- Taste vs maximum reduction: high-flow carbon for everyday taste/odor vs RO for maximum dissolved-solid reduction at a faucet.
- Plan maintenance: note change intervals (typically 6–12 months for cartridges; multi-year media on whole-home units).
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EWS RO4 & RO4-UV – Four-Stage Under Sink Reverse Osmosis Systems with Optional UV Protection
EWSOriginal price $ 801.75 - Original price $ 1,026.75Original price$ 801.75 - $ 1,026.75$ 801.75 - $ 1,026.75Current price $ 801.75| /EWS RO4 & RO4-UV – Four-Stage Under Sink Reverse Osmosis Drinking Water Systems The EWS RO4 is a high-performance reverse osmosis system that d...
View full detailsOriginal price $ 801.75 - Original price $ 1,026.75Original price$ 801.75 - $ 1,026.75$ 801.75 - $ 1,026.75Current price $ 801.75| / -
EWS - F.SET.RO4 & F.SET.RO4-UV – Replacement Filter Sets for EWS RO4 Under Sink Reverse Osmosis Systems
EWSOriginal price $ 486.75 - Original price $ 569.25Original price$ 486.75 - $ 569.25$ 486.75 - $ 569.25Current price $ 486.75| /F.SET.RO4 & F.SET.RO4-UV – Replacement Filter Sets for Under Sink EWS RO4 Reverse Osmosis Systems Keep your reverse osmosis system performing l...
View full detailsOriginal price $ 486.75 - Original price $ 569.25Original price$ 486.75 - $ 569.25$ 486.75 - $ 569.25Current price $ 486.75| / -
EWS RO3 & RO3-UV – Essential Three-Stage Under Sink Reverse Osmosis Systems
EWSOriginal price $ 726.75 - Original price $ 951.75Original price$ 726.75 - $ 951.75$ 726.75 - $ 951.75Current price $ 726.75| /EWS RO3 & RO3-UV – Essential Three-Stage Under Sink Reverse Osmosis Systems The EWS RO3 is a high-performance, three-stage reverse osmosis (RO)...
View full detailsOriginal price $ 726.75 - Original price $ 951.75Original price$ 726.75 - $ 951.75$ 726.75 - $ 951.75Current price $ 726.75| / -
EWS - F.SET.RO3 & F.SET.RO3-UV – Replacement Filters for EWS Under Sink Reverse Osmosis RO3 & RO3-UV Systems
EWSOriginal price $ 426.75 - Original price $ 509.25Original price$ 426.75 - $ 509.25$ 426.75 - $ 509.25Current price $ 426.75| /F.SET.RO3 & F.SET.RO3-UV – Under Sink Replacement Filters The F.SET.RO3 and F.SET.RO3-UV are the official replacement filter kits for the EWS R...
View full detailsOriginal price $ 426.75 - Original price $ 509.25Original price$ 426.75 - $ 509.25$ 426.75 - $ 509.25Current price $ 426.75| / -
EWS DWS-UV – Essential Under Sink Drinking Water System with Ultraviolet Protection
EWSOriginal price $ 704.25 - Original price $ 704.25Original price$ 704.25$ 704.25 - $ 704.25Current price $ 704.25| /EWS DWS-UV – Essential Under-Sink Drinking Water System with Ultraviolet Protection The EWS DWS-UV is the ultimate under-sink drinking water system...
View full detailsOriginal price $ 704.25 - Original price $ 704.25Original price$ 704.25$ 704.25 - $ 704.25Current price $ 704.25| / -
EWS DWS– Essential Under Sink Drinking Water System
EWSOriginal price $ 479.25 - Original price $ 479.25Original price$ 479.25$ 479.25 - $ 479.25Current price $ 479.25| /EWS DWS– Essential Under-Sink Drinking Water System The EWS DWS Essential Drinking Water System is a compact, high-performance under-sink system en...
View full detailsOriginal price $ 479.25 - Original price $ 479.25Original price$ 479.25$ 479.25 - $ 479.25Current price $ 479.25| / -
EWS - F.SET.DWS Essential Under Sink DWS Filter Set
EWSOriginal price $ 246.75 - Original price $ 246.75Original price$ 246.75$ 246.75 - $ 246.75Current price $ 246.75| /F.SET.DWS – Replacement Water Filter Set for EWS DWS The F.SET.DWS replacement set keeps your EWS Essential Drinking Water System (DWS) performing ...
View full detailsOriginal price $ 246.75 - Original price $ 246.75Original price$ 246.75$ 246.75 - $ 246.75Current price $ 246.75| / -
EWS SS-2.5 Max Flow – High-Flow Under Sink Drinking Water Filtration
EWSOriginal price $ 321.75 - Original price $ 321.75Original price$ 321.75$ 321.75 - $ 321.75Current price $ 321.75| /The EWS SS-2.5 Max Flow (often branded “Max Flow”) is a powerful under-sink drinking water filter engineered to deliver filtered water at the speed...
View full detailsOriginal price $ 321.75 - Original price $ 321.75Original price$ 321.75$ 321.75 - $ 321.75Current price $ 321.75| / -
EWS - F.SET.SS-2.5 - SS Filter Replacement - Under Sink Max Flow Filtration System
EWSOriginal price $ 171.75 - Original price $ 171.75Original price$ 171.75$ 171.75 - $ 171.75Current price $ 171.75| /Key Benefits & Features High flow, no compromise — up to 2.5 gallons per minute, matching typical faucet speeds. No tank, no water waste — ...
View full detailsOriginal price $ 171.75 - Original price $ 171.75Original price$ 171.75$ 171.75 - $ 171.75Current price $ 171.75| / -
EWS - SS-1.0 - Single Stage Under Sink Drinking Water Filtration System
EWSOriginal price $ 171.75 - Original price $ 171.75Original price$ 171.75$ 171.75 - $ 171.75Current price $ 171.75| /EWS SS-1.0 – Essential Single Stage Filtration System The EWS SS-1.0 is a compact and effective under-sink water filtration system designed to deli...
View full detailsOriginal price $ 171.75 - Original price $ 171.75Original price$ 171.75$ 171.75 - $ 171.75Current price $ 171.75| / -
EWS - F.SET.SS-1.0 – Replacement Filter for Under Sink EWS SS-1.0 Single Stage System
EWSOriginal price $ 81.75 - Original price $ 81.75Original price$ 81.75$ 81.75 - $ 81.75Current price $ 81.75| /F.SET.SS-1.0 – Replacement Filter for EWS SS-1.0 Single Stage System The F.SET.SS-1.0 is the official replacement cartridge for the EWS SS-1.0 Esse...
View full detailsOriginal price $ 81.75 - Original price $ 81.75Original price$ 81.75$ 81.75 - $ 81.75Current price $ 81.75| / -
EWS Heater Guard 1.5″ – Sediment & Scale Protection for Larger Water Heaters
EWSOriginal price $ 423.75 - Original price $ 423.75Original price$ 423.75$ 423.75 - $ 423.75Current price $ 423.75| /EWS Heater Guard 1.5″ – Sediment & Scale Protection for Water Heaters The EWS Heater Guard 1.5″ is a rugged inline protection unit designed for...
View full detailsOriginal price $ 423.75 - Original price $ 423.75Original price$ 423.75$ 423.75 - $ 423.75Current price $ 423.75| / -
EWS Heater Guard 3/4″ – Sediment & Scale Protection for Water Heaters
EWSOriginal price $ 365.25 - Original price $ 365.25Original price$ 365.25$ 365.25 - $ 365.25Current price $ 365.25| /Water Heater Protection — EWS Heater Guard 3/4″ Extend the life of your water heater and avoid costly repairs with the EWS Heater Guard 3/4″. This ...
View full detailsOriginal price $ 365.25 - Original price $ 365.25Original price$ 365.25$ 365.25 - $ 365.25Current price $ 365.25| / -
EWS - BB-GUARD-FILTER-3/4 – Replacement Filter Cartridge for EWS Heater Guard ¾″
EWSOriginal price $ 111.75 - Original price $ 111.75Original price$ 111.75$ 111.75 - $ 111.75Current price $ 111.75| /The BB-GUARD-FILTER-3/4 is the official replacement filter cartridge for the EWS Heater Guard ¾″ system. Built with a 5-micron pre-sediment cartrid...
View full detailsOriginal price $ 111.75 - Original price $ 111.75Original price$ 111.75$ 111.75 - $ 111.75Current price $ 111.75| / -
EWS BB-GUARD-FILTER-1.5 – Replacement Filter Cartridge for EWS Heater Guard 1.5″
EWSOriginal price $ 186.75 - Original price $ 186.75Original price$ 186.75$ 186.75 - $ 186.75Current price $ 186.75| /BB-GUARD-FILTER-1.5 – Replacement Filter Cartridge for EWS Heater Guard 1.5″ The BB-GUARD-FILTER-1.5 is the official replacement filter for the EWS...
View full detailsOriginal price $ 186.75 - Original price $ 186.75Original price$ 186.75$ 186.75 - $ 186.75Current price $ 186.75| / -
EWS BB-FUGAC200A-1 – Two-Stage Point of Entry Whole House Water Filtration
EWSOriginal price $ 794.25 - Original price $ 794.25Original price$ 794.25$ 794.25 - $ 794.25Current price $ 794.25| /EWS BB-FUGAC200A-1 – Two-Stage Point of Entry Whole Home Water Filtration The EWS BB-FUGAC200A-1 is a point-of-entry cartridge system designed for ...
View full detailsOriginal price $ 794.25 - Original price $ 794.25Original price$ 794.25$ 794.25 - $ 794.25Current price $ 794.25| / -
EWS - BB-PRESED-50-SW - Replacement Pre-Filter Filter for Two Stage Sediment System
EWSOriginal price $ 126.75 - Original price $ 126.75Original price$ 126.75$ 126.75 - $ 126.75Current price $ 126.75| /BB-PRESED-50-SW – Sediment Pre-Filter for Two Stage Sediment System (50 Micron) The BB-PRESED-50-SW is a heavy-duty 20" pre-sediment filter cartrid...
View full detailsOriginal price $ 126.75 - Original price $ 126.75Original price$ 126.75$ 126.75 - $ 126.75Current price $ 126.75| / -
EWS - BB-GACB-10RFA - Replacement Filter for Two Stage Sediment System
EWSOriginal price $ 246.75 - Original price $ 246.75Original price$ 246.75$ 246.75 - $ 246.75Current price $ 246.75| /BB-GACB-10RFA – Radial Flow Carbon Block Replacement Water Filter Cartridge The BB-GACB-10RFA is a premium 20" carbon block cartridge engineered to...
View full detailsOriginal price $ 246.75 - Original price $ 246.75Original price$ 246.75$ 246.75 - $ 246.75Current price $ 246.75| / -
EWS - Systems Media Replacement Kits with Tanks for EWS Series
EWSOriginal price $ 1,550.25 - Original price $ 3,178.50Original price$ 1,550.25 - $ 3,178.50$ 1,550.25 - $ 3,178.50Current price $ 1,550.25| /EWS Whole Home Water Filtration and Conditioning – Replacement Tank Kits for EWS Series Keep your EWS Whole Home Water Filtration & Conditionin...
View full detailsOriginal price $ 1,550.25 - Original price $ 3,178.50Original price$ 1,550.25 - $ 3,178.50$ 1,550.25 - $ 3,178.50Current price $ 1,550.25| / -
EWS - Systems Media Replacement Kits less Tank
EWSOriginal price $ 1,428.75 - Original price $ 5,326.50Original price$ 1,428.75 - $ 5,326.50$ 1,428.75 - $ 5,326.50Current price $ 1,428.75| /EWS Systems Media Replacement Kits Media replacements kits require some assembly. 100% pure granular activated carbon (GAC) – no silver impregnat...
View full detailsOriginal price $ 1,428.75 - Original price $ 5,326.50Original price$ 1,428.75 - $ 5,326.50$ 1,428.75 - $ 5,326.50Current price $ 1,428.75| / -
EWS - CWL Filtration Tanks – Replacement Carbon Tanks for Whole House Systems CWL-1054
EWSOriginal price $ 1,669.50 - Original price $ 1,669.50Original price$ 1,669.50$ 1,669.50 - $ 1,669.50Current price $ 1,669.50| /CWL Filtration Tanks – Replacement Carbon Tanks for Whole Home Systems The CWL Filtration Tank series provides high-grade carbon filtration for who...
View full detailsOriginal price $ 1,669.50 - Original price $ 1,669.50Original price$ 1,669.50$ 1,669.50 - $ 1,669.50Current price $ 1,669.50| / -
EWS - CWL Filtration Tanks – Replacement Carbon Tanks for Whole House Systems CWL-1035
EWSOriginal price $ 1,073.25 - Original price $ 1,073.25Original price$ 1,073.25$ 1,073.25 - $ 1,073.25Current price $ 1,073.25| /CWL Filtration Tanks – Replacement Carbon Tanks for Whole Home Systems The CWL Filtration Tank series provides high-grade carbon filtration for who...
View full detailsOriginal price $ 1,073.25 - Original price $ 1,073.25Original price$ 1,073.25$ 1,073.25 - $ 1,073.25Current price $ 1,073.25| / -
EWS-1035 Whole-House Filtration + Salt-Free Conditioning (Condo)
EWSOriginal price $ 3,149.25 - Original price $ 3,149.25Original price$ 3,149.25$ 3,149.25 - $ 3,149.25Current price $ 3,149.25| /EWS-1035 Whole-Home Water Filtration & Salt-Free Conditioning New Model EWS-1035-V2 Whole-Home Filtration + Salt-Free Conditioning (Condo) Des...
View full detailsOriginal price $ 3,149.25 - Original price $ 3,149.25Original price$ 3,149.25$ 3,149.25 - $ 3,149.25Current price $ 3,149.25| /Sold out -
EWS - EWS-SPECTRUM - Spectrum Series Whole House Water Filtration System Plus Conditioning EWS-SPECTRUM
EWSOriginal price $ 4,143.75 - Original price $ 4,143.75Original price$ 4,143.75$ 4,143.75 - $ 4,143.75Current price $ 4,143.75| /EWS Spectrum Whole Home Water Filtration & Salt-Free Conditioning New Model EWS-SPECTRUM-V2 - Whole Home Water Filtration System Plus Conditio...
View full detailsOriginal price $ 4,143.75 - Original price $ 4,143.75Original price$ 4,143.75$ 4,143.75 - $ 4,143.75Current price $ 4,143.75| /Sold out
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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