Roll over image to zoom in

H2O International US4, 5-Stage Under Sink Water Filter

List Price: $289.00
FREE Shipping with orders over $99 (details)
You Save:
$70.00 (24%)
  In Stock
Filtered Water Benefits the Whole Family

Faucet Options:

Upgrade Faucet: view all styles and colors

Quick-Connect Guide:

Quick-Connect FittingsTubing connection has never been easier than with Quick-Connect fittings. View our simplified Quick-Connect diagrams to see how...

Environmental Impact

Water Bottle Landfill

Use our Bottled Water Cost Calculator to find out how much of an impact you have on the environment.

Learn why filtration is better for the environment than bottled water.

Bottled Water vs Tap Water


  • Large GAC/KDF Sealed Unit uses 80% Granular Activated Carbon by volume and 20% Patented KDF Media for removal of chlorine, chemical contaminants and heavy metals.
  • Removes Chlorine, Bad Taste, Odor, Color, Volatile Organic Compounds (VOC's) & Trihalomethanes (THM's).
  • Bacteriostatic Media Prevents Bacteria Growth within the unit
  • Drinking Water Faucet provides all the water your family will need for drinking, cooking, ice, and beverages.
  • Click here to view Faucet Adaptor, Ball Valve and Tubing supplied with system.
  • Click here to view an inline model that uses your regular faucet.
  • The US4 will provide your family with a seemingly endless supply of water that is on par with bottled spring water.
  • System installs easily or call one of our Certified Water Specialists with your questions.
  • 3 Year, Maintenance Free Warranty

Under Sink Cutaway Diagram
View a cutaway diagram of typical under sink filter to see how it filters your water.
H2O-US4 Specifications
Max Capacity: 35,000 gallons Recommended Flow: 1 - 2 GPM
Dimensions: 16½" (H) × 5" (D) Unit Shipping Weight: 11 lbs.