AF-3700 - 7-Stage Alkaline Countertop Filter

AF-3700 - 7-Stage Countertop Filter comes with the improved 7-Stage Alkaline Filter Cartridge. In this Countertop Water Filter, water passes through 7 filtering media stages to remove contaminants and ionize before it ends up inside your glass, cooking or coffee pot.

The attractively designed unit sits right on your counter top and completes the filtration process automatically, so you can just dispense the water you need and enjoy its refreshing taste.

In addition to making water cleaner, the filter eliminates unpleasant odors, increases water alkalinity, and reduces ORP (Oxidant Reduction Potential) making the water more anti-oxidizing. Anti-oxidants help absorb free radicals in the body that lead to aging and diseases. Alkaline water with reduced ORP hydrates you even better. As a result, the water in your glass helps contribute to a healthier you.

All of Anchor water filters feature National Safety Foundation (NSF) certified filter media.

Read more about Alkaline water with reduced ORP in our blog.


  • Premium quality parts. Slim, Portable, Compact Design. Easy installation.
  • Perfect solution for household of any size. Ideal for residential applications.
  • Uniform and solid media structures. High chemical absorption capacity.
  • Do not exhibit problems such as channeling, fluidizing, bypassing, and the release of carbon fines.
  • Alkaline Calcite is a naturally occurring calcium carbonate media. It releases calcium and carbonate in water. The effect is water with added minerals for taste and higher pH.
  • Far-Infrared and ORP balls ionized and reduce ORP of water making it a better anti-oxidant. This improves blood circulation, boosts metabolism and immune system, and helps maintain healthy human cells.
  • KDF-55 removes chlorine and heavy metals like lead, mercury & iron. Also controls scale, bacteria and algae.
  • Coconut shell activated carbon (GAC) removes chlorine and its byproducts such as THM and TCE, TTHMs, low levels of hydrogen sulfide (rotten egg smell). 
  • 10 micron felt pads removes fine sediments and fine particles.


  • Filter Capacity: 1500 gallons or 6-months
  • Weight with cartridge: 5.6 lbs
  • Height: 12 3/4 inches
  • Pipe length: 4 feet 10 inches
  • Fits most standard sized faucets. All hardware included.

Replacement Cartridge

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Ask a Question
  • Is this filter remove lead in water?

    Yes, the KDF 55 in the filter removes lead.
    Thank you,
    Anchor Water Filters