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Drinking Water
Concerned about drinking water? NSF’s experts provide science-based information on water filters, water safety and bottled water.
Learn more about what certification means for these products and how they help you and your family with better living through science.
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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.