ESD-US4: Deluxe Undersink Water Filter

Easily the most popular undersink retail unit on the market today! Ideal upgrade from the NSA 100S/SX or the NSA 3000HM if you are on municipal tap water.



  • 5 stage filtration and purification system
  • Hooks up to separate chromed long reach faucet (included)
  • Available In-line for hook up to sink faucet
  • Safe, secure, dependable Quick Connect fittings
  • Bacteriostatic media: Prevents bacteria growth
  • Improves taste, eliminates odors, removes color
  • Removes hundreds of contaminants
  • For use on treated potable water only
  • Expected Max. Capacity: 35,000 gallons
  • Manufacturer’s prorated warranty
  • Installs out of sight under the sink. Installation kit included.

With complete installation kit: saddle valve, fittings, chromed gooseneck faucet, neoprene water lines.
Qty:   at $272.00

With Union Kit (no separate drinking water faucet) and neoprene water lines.
Qty:   at $265.00

Replacement filter only. No accessories, water line or hardware included.
Qty:   at $250.00

Product Details

Expected Max. Capacity: Up to 35,000 gal.  132,475 lts.
Recomm. Flow: 1 to 2 gpm.  3.8 to 7.6 lts./min.
Height: 16.5″ 41.9 cm. 
Width:  5″ Dia 12.7cm.
Shipping Wt.: 11 lbs. 5 Kgs.


NOTE: Water filtration alone is not appropriate technology for biologically unsafe or untreated water sources such as private wells.