Water Filters, Reverse Osmosis and Water Treatment Systems
Use of NSF consulting services or attending NSF training sessions does not provide an advantage, nor is it linked in any way to the granting of certification.
Home Water Treatment
Learn how to find the right water treatment solution for your home.NSF Standards for Water Treatment Systems
Learn about the importance of water treatment standards and protocols.Drinking Water Testing
Determine what type of testing to do on your well or municipal water.Product Label and Literature Claims
Don’t overlook the product packaging and literature of certified water treatment systems.Consumer Confidence Reports
Do you ever wonder what is in your drinking water?Contaminant Reduction Claims
Use our helpful guide to find a certified water filter or treatment system. It shows the top contaminants you asked us about.Changing Water Filters
Learn when and why you need to change your water filter.
Water Safety
Learn more about common water contaminants to understand what’s in your drinking water.