Drinking Water

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Water Safety
Learn more about drinking water safety and common contaminants.
Water Filters, Reverse Osmosis and Water Treatment Systems
Discover what certification means for water filters and for reverse osmosis and treatment systems.
Bottled Water
Find out more about bottled water safety, FDA guidelines and our certification.

What Is NSF Certification?

Millions of people take the safety of their food, water and consumer products for granted. Why? Because of three letters: NSF. Our certification ensures products meet strict public health standards.

Drinking Water

Explore Topics

Water Safety

Water Filters, Reverse Osmosis and Water Treatment Systems

Bottled Water

What Is NSF Certification?