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Tier1 Smart Tap Under-Sink Water Filtration System

SKU
TIER1-US-ST04
Price $58.99 List Price Price $83.99 Save 29%
Availability: In Stock - Free Shipping
3/8-inch Quick Connect
  • 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
See more product details
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.


Experience the Tier1 Difference

Tier1 manufactures high-quality filtration and household products. We take creating and maintaining a healthy home seriously. Products must undergo rigorous testing and meet demanding quality expectations in order to earn the Tier1 badge. Every purchase is backed by the Tier1® Guarantee:

  • Guaranteed Fit
  • Guaranteed Quality
  • Guaranteed Price
Package Qty1
Manufacturer's IdUS-ST04
UPC641945746853
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 MediaCarbon 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 TypeMPT
Fitting Size (inches)1/2 inch
ColorGray
Chlorine Tolerance95.5%
CertificationsNSF/ANSI Standard 42, NSF/ANSI Standard 53, NSF/ANSI Standard 401
IncludesSystem head with attachable bracket, smart tap filter, water supply adapter, mounting screws, 3/8 inch plastic tubing
Primary Filter MediaCarbon Block

Reduced Contaminants

The TIER1-US-ST04 reduces the following contaminants:

  • 1,1,1-Trichloroethane 95%
  • 1,1,2-Trichloroethane >99%
  • 1,1,1-Trichloro-2-propanone 96%
  • 1,2,4-Trichlorobenzene >99%
  • 1,1-Dichloroethtlene >99%
  • 1,1-Dichloro-2-propanone 99%
  • 1,2-Dichloroethane 95%
  • 1,2-Dichloropropane >99%
  • 2,4-Dichlorophenoxyacetic Acid (2,4-D) 99%
  • Alachlor >98%
  • Asbestos 99%
  • Atrazine >97%
  • Benzene >99%
  • Bisphenol A >98.9%
  • Bromochloroacetonitrile 98%
  • Bromodichloromethane 95%
  • Bromoform 95%
  • Carbofuran >99%
  • Carbon Tetrachloride 98%
  • Chloramines 89.1%
  • Chlorine Taste & Odor 89.1%
  • Chlorobenzene / Monochlorobenzene >99%
  • Chlorodibromomethane 95%
  • Chloroform 95%
  • Chloropicrin 99%
  • Cis-1,2-Dichloroethylene >99%
  • Cis-1,3-Dichloropropylene >99%
  • Cysts >99.99%
  • Dibromochloropropane (DBCP) >99%
  • Dibromoacetonitrile 98%
  • Dichloroacetonitrile 98%
  • Dinoseb 99%
  • Endrin 99%
  • Estrone >96.5%
  • Ethylbenzene >99%
  • Ethylene Dibromide (EDP) / 1,2-Dibromoethane >99%
  • Heptachlor (H-34,Heptox) >99%
  • Heptachlor Epoxide 98%
  • Hexachlorobutadiene >98%
  • Hexachlorocyclopentadiene >99%
  • Ibuprofen >95.4%
  • Lead at pH 6.5 >99.3%
  • Lead at pH 8.5 >99.4%
  • Lindane >99%
  • Mercury at pH 6.5 >96.6%
  • Mercury at pH 8.5 >96.7%
  • Methoxychlor >99%
  • Methyl tertiary butyl ether (MTBE) 66.9%
  • Naproxen >96.4%
  • Nonylphenol >97.5%
  • O-Dichlorobenzene >99%
  • P-Dichlorobenzene >98%
  • Particulates (Class I) >99.9%
  • Pentachlorophenol >99%
  • Pesticides >95.6%
  • Simazine >97%
  • Styrene >99%
  • Toluene >99%
  • Trans-1,2-Dichloroethylene >99%
  • Trichloroacetonitrile 98%
  • Trichloroethylene >99%
  • Turbidity 99.0%
  • VOCs 96.7%
  • Xylene >99%

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

TIER1-US-ST04 US-ST04
CULLIGAN-US-EZ-4 US-EZ-4
CULLIGAN-US-EZ-3 US-EZ-3

Installation Guide

Instructions

  1. Turn off cold water shut-off valve then turn on the kitchen faucet and allow water to drain from line.
  2. Disconnect the cold water line from the cold water shut-off valve
  3. Connect the water supply adapter to the cold water shut-off valve, as shown.
  4. For more filter changing assistance please watch our video below:

Reset Instructions