California Water Board Certificate image


In the world of water treatment, there are systems that make claims, and then there are systems that are certified by the National Sanitation Foundation (NSF) the premier third-party testing agency for water treatment products. The Honest Water Filter Systems fall under the latter category.
This video explains how and why the NSF came into existence and why the need for NSF testing is greater today than ever before.
NSF - National Sanitation Foundation Logo