Under Sink Counter Water Filter (Replaces NSA Model 100S* & NSA Model 100SX*)

Save $28.01

Sale price$190.99 Regular price$219.00

USA replacement for the discontinued NSA Model 100S* & NSA Model 100SX* Undercounter water filters.




Our USA Filtration 5 stage filtration and purification system offers tremendous features and improvements to the old NSA models. Over the years we've managed to improve the old NSA model and offer a better NSA replacement. 
The USA-100 under sink water filter offers the ability to easily and quickly convert  your current water system into one that provides high quality filtered water. The water filter is installed underneath the sink and out of sight.  
  • Capacity: 25,000 gallons!!
  • Hooks up to existing water line connections and faucet (available with quick connect or compression fittings)
  • Bacteriostatic media (GAC/KDF): Prevents bacteria growth for up to 36 months!!
  • Improves taste, eliminates odors, removes color
  • Removes hundreds of contaminants (see GAC key)


  • Height: 14"
  • Diameter: 5"
  • Shipping Weight: 8lbs
  • 1 year pro rata warranty
  • Made in the U.S.A.

The USA-100 comes with everything you see in the photos, including the 

  • Under Sink Water Filter USA -100 

 Looking for a Counter Top Water Filter?

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