USA-100 Under Sink Water Filter - NSA 100S/100SX Replacement

The made-in-USA replacement for the discontinued NSA 100S* and NSA 100SX* under sink water filters. The USA-100 installs under your kitchen sink, out of sight, and turns your existing faucet into a source of clean, great-tasting filtered water.

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Replaces NSA 100S and NSA 100SX

If your NSA 100S or 100SX under sink filter has reached the end of its life, the USA-100 is built to take its place. It hooks up to your existing water line connections and faucet, and it improves on the original NSA design with 5-stage GAC/KDF filtration and a 25,000-gallon capacity.

Features

• 5-stage water filtration and purification system
• 25,000-gallon capacity
• Bacteriostatic GAC/KDF media prevents bacteria growth for up to 36 months
• Improves taste, eliminates odors and removes color
• Reduces hundreds of contaminants (see GAC key)
• Hooks up to your existing water line and faucet with quick connect or compression fittings
• Installs under the sink, out of sight
• Made in the U.S.A.

Specifications

What's in the box

The USA-100 comes with everything shown in the product photos.

Installation

1. Turn off the cold water supply valve under your sink.
2. Connect the USA-100 inlet to your cold water line using the quick connect or compression fittings.
3. Connect the filter outlet to your faucet supply line.
4. Turn the water back on, check every connection for leaks, and run the faucet for a few minutes before drinking.

Need help with installation? Call us at 888-672-3458.

Frequently asked questions

Does the USA-100 replace my NSA 100S or 100SX?
Yes. The USA-100 is our replacement for the discontinued NSA 100S and 100SX under sink filters, and it hooks up to your existing water line connections and faucet.

How often should I replace it?
Replace the USA-100 after 25,000 gallons or 36 months, whichever comes first.

What does it remove?
It improves taste, eliminates odors and removes color, and it reduces hundreds of contaminants. See the GAC key for the full list.

What is the warranty?
Every unit has a 60-day full replacement warranty plus a 1-year pro-rata warranty. See our warranty program for details.

Still have a question?
Call 888-672-3458 or send us a message.

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• USA-75 Shower Head Water Filter

*NSA is a trademark of its respective owner. USA Filtration is not affiliated with NSA.