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Tier1 Under Sink Drinking Water Filtration System - reduces Chlorine, Taste & Odor, Lead, Mercury, VOCs

3/8-inch Quick Connect
Save 38% (MSRP: $95.99)
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Tier1 Under Sink Drinking Water Filtration System - reduces Chlorine, Taste & Odor, Lead, Mercury, VOCs

Tier1 Under Sink Drinking Water Filtration System - reduces Chlorine, Taste & Odor, Lead, Mercury, VOCs

Save 38% (MSRP: $95.99)



The US-ST04 Tier1 Smart Tap under-sink water filtration system is a high performance under-sink system capable of filtering over 50 contaminants in your water. This system features a sleek design that minimizes the amount of space occupied for filtration needs, providing a nearly unnoticeable change from your usual under-sink storage decisions. Simple installation requirements are as easy as mounting the bracket under the sink cabinet and attaching the cold water supply with the supply adapter. Enjoy refreshing, great tasting water with the US-ST04 Tier1 under-sink Smart Tap Water Filtration System today.

Key Features

  • This system has been tested against NSF/ANSI Standard 42, 53, an 401
  • Reduces Chlorine Taste and Odor, Lead, Mercury, and more!
  • Requires less space than most other under-sink water filtration systems
  • Features quick and easy installation

Contaminants Controlled



Manufacturer's Id US-ST04 UPC 641945746853
Actual Size (in) 19.25 inches (length) x 4.125 inches (width) x 4.5 inches (depth) Actual Size (cm) 50 centimeters (length) x 10.5 centimeters (width) x 11.5 centimeters (depth)
Primary Filter Media Carbon Block Filter Life (gallons) 651
Filter Life (liters) 2464 Micron Rating (Nominal) 1
Operating Pressure (psi) 40 - 120 Operating Temperature (°F) 33 - 100
Operating Temperature (°C) 4.4 - 37.8 Flow Rate (gpm) 1.25
Flow Rate (lpm) 4.73 Fitting Size (inches) 3/8 inch
Color / Finish Gray Chlorine Tolerance 95.5%
Certifications NSF/ANSI Standard 42, NSF/ANSI Standard 53, NSF/ANSI Standard 401 Includes System head with attachable bracket, smart tap filter, water supply adapter, mounting screws, 3/8 inch plastic tubing
Primary Filter Media Carbon Block


Reduces the following contaminants:

The TIER1-US-ST04 is comparable with the following part numbers


Extra Features and Parts


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