NSF 53 CERTIFIED: Reduces specific health-related contaminants for cleaner water: 99.6% of Lead, 99.99% of Cyst, 96.6% of Benzene, 98.4% of Carbofuran, 96.6% of Endrin NSF 42 CERTIFIED: Reduces 97% of Chlorine, taste and odor for great-tasting water that stimulates your palate NSF 372 CERTIFIED: Made of lead-free material for worry-free drinking experience