Are National Sanitation Foundation (NSF) certified water filters better than non-NSF certified water filters?
Not necessarily. To become certified by NSF, water filter manufacturers have to pay NSF various fees on an ongoing basis. A large number of manufacturers choose not to pay these fees and therefore not to have their products endorsed by NSF. Many of these manufacturers produce filters that are more effective than those produced by companies that have opted for NSF certification. You should evaluate a water filter based on the materials it is composed of and the reputation of the company that stands behind it.
