US-3i

Under Counter Water Filter

25,000 Gallon Capacity

US - 3i - Under Counter Water Filter - 25,000 Gallon Capacity - Pure n Natural Systems
US - 3i - Under Counter Water Filter - 25,000 Gallon Capacity - Pure n Natural Systems

US-3i

Under Counter Water Filter

25,000 Gallon Capacity

Translation missing: en.product.general.sale_price $169.00

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About this product

25,000 Gallon Capacity Under Counter Water Filter will Provide Years of Trouble-Free, Worry-Free Purified Drinking Water

The US-3i under sink water filter is a sealed in-line system that provides 25,000 gallons of pure, clean drinking water. Installing the US-3i water filter saves you the expense of buying bottled water and provides filtered drinking water that's great for cooking, cleaning fruits & vegetables, and making beverages such as coffee, tea & juices. Utilizing KDF®, a patented bacteriostatic media, the US-3i has been tested to drastically reduce or effectively remove Chlorine, Lead, Arsenic, Barium, Cadmium, Chromium, Selenium, Mercury, Iron, and other heavy metals that may be present in your drinking water.

In addition to KDF, the system uses Coconut Shell Granular Activated Carbon which is used to improve the taste and odor of water and to remove chlorine, THMs, PCBs, and many other organic contaminants that may be in the water.

US-3i Under Counter Water Filter Stages of Filtration

The US-3i Under Counter Water Filtration System

  • Stage 1 - 5 Micron Filter Pad
  • Stage 2 - KDF- (20%) A high purity alloy that has been tested to remove chlorine and heavy metals such as lead, mercury, arsenic, etc. KDF is a bacteriostatic media that inhibits the growth of bacteria from within the unit.
  • Stage 3 - 5 Micron Filter Pad
  • Stage 4 - Coconut Shell Granular Activated Carbon - (80%) Removes chlorine, bad taste, and odor. Granular activated carbon is known to be effective for the removal of hundreds of chemical contaminants that may or may not be present in your water.
  • Stage 5 - 5 Micron Filter Pad

Features of the US-3i High Capacity Under Counter Water Filter System

  • 5 Stages of advanced filtration
  • Installed out of sight, under the sink
  • The water filter system includes everything needed for installation including 3/8" tubing
  • Quick connect fittings for simple installation/replacement
  • Installs in-line for direct hook-up to sink faucet
  • Bacteriostatic media -prevents bacteria growth (algae, fungi)
  • Water filtration system improves taste and color and eliminates odors
  • Reduces most EPA contaminants
  • US-3i Water Filter is Made in the U.S.A.

Best for

  • Homes and offices that want long-lasting under-sink water filtration
  • Improving taste and odor of drinking and cooking water
  • Reducing chlorine and common water contaminants
  • Kitchens with limited counter space
  • Users who want a high-capacity filter with fewer replacements

Specifications

Max. Capacity

25,000 gallons

Recommended Water Flow

1 GPM

Unit Height

16.5"

Unit Diameter

4"

Unit Weight

8 lbs.

Warranty

3 Year Pro-rated

Certifications

Pure n Natural Systems, Inc. is not liable for damage or other undesirable consequences incurred by misuse, improper assembly, or improper installation of any water filtration system.

What's in the box

  • 6′ of ⅜″ Tubing for connection to your cold water line
  • ⅜″ Compression Union fitting for secure plumbing connections
  • ⅜″ Pressure Reducing Valve to protect the system from high water pressure
  • Quick-Connect Fittings to simplify installation without special tools.
  • Additional compression fittings needed for setup.

These components, along with the filter housing and internal media, provide everything required for under-sink installation.

Installation tips

  • Shut Off Cold Water Supply: Turn off the cold water line under the sink before installation.
  • Relieve Pressure: Open the faucet to release any remaining pressure.
  • Mount the Filter: Secure the filter housing to the cabinet wall using the included bracket.
  • Connect Water Lines: Attach the inlet and outlet tubing according to the flow direction indicated on the filter.
  • Check Connections: Ensure all fittings are tight and properly seated.
  • Restore Water Supply: Turn the water back on slowly and inspect for leaks.
  • Flush the Filter: Run water for several minutes to flush the system before use.
  • No electrical connection is required.

Frequently asked questions

What does the 25,000-gallon rating mean?
It indicates the total volume of water the filter can treat over its service life under normal conditions before replacement is recommended.

What contaminants does this under-sink filter help reduce?
It is designed to reduce chlorine taste and odor and other common impurities that affect water quality and flavor.

How often does the filter need to be replaced?
Replacement depends on water usage and quality, but many users can expect long service life thanks to the 25,000-gallon capacity.

Does this system require electricity or a drain connection?
No. This under-sink filter operates using water pressure only and does not require electricity or a drain.

Is professional installation required?
No. Installation is straightforward for most users, though a plumber may be used if preferred.

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