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H2O (H2O-US4-13) Inline 5 Stage Under Sink Filter (Replaces NSA 100 Models)

Product Code H2O-US4-13

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The H2O US4-13 under sink filter replaces and is a retro fit for the discontinued NSA 100S. This model is also an excellent replacement for the now discontinued NSA 100SX. The US4-13 uses the same size tubing and the fittings as both the NSA models.

This system connects inline with your existing sink faucet and flows up to 2 gallons per minute. The filter will remove chlorine, bad taste, odor, lead and trace chemical contaminants from your family's water.

Our company has been offering this model for over 20 years, and we have thousands of happy customers using this system. It's our most popular under sink filter


  • Removes Chlorine, Bad Taste, Odor and Lead
  • Removes Dirt, Rust & Sediment
  • Bacteriostatic KDF Media Prevents Bacteria Growth within the Unit
  • Includes Tubing, Fittings and Instructions
  • 3 Years of Maintenance Free Performance