The Epic Pure Pitcher Filter, Epic Urban Bottle filter, & Epic Outdoor Adventure Bottle filter have all been tested by a third party and exceeds NSF/ANSI standards 42, 53, 401, & P231. That being said, it hasn't been certified by the company NSF. If you're looking for a filter that has been certified, you'll want to take a look at our new Epic Smart Shield. This filter has been certified by IAPMO against NSF/ANSI standards 42, 53, 401. To see all of our certificates and testing results visit our "Testing & Certifications" page.