Review on Enhanced TIER1 Undersink Replacement Filter: Unbeatable Quality and Performance by Monica White

They work as advertised for flavor related filters like chlorine and haze, but they don't filter other health related things. Filters that require NSF/ANSI 53 certification typically include: heavy metals (arsenic, cadmium, chromium, copper, lead, mercury, and selenium), inorganics (fluorides and nitrates plus nitrites), and volatile organic chemicals (chloroform substitutes as well as individual organics substances). chemicals).