ใ€NSF 42 CERTIFIEDใ€‘Tested and certified by NSF, WQA and IAPMO against NSF/ANSI 42. Tested at a flow rate of 0.5 gpm to a capacity of 300 gallons for the reduction of Chlorine, Taste and Odor. Significantly improve the drinking water taste. ใ€NSF 372 CERTIFIED IN WQA&IAPMOใ€‘Tested and certified by WQA&IAPMO against NSF/ANSI 372.Product also evaluated and determined to possess weighted average lead content of less than 0.25%.No any harmful substances contains in this filter. Safely and healthily enjoy your drinking water. ใ€WIDELY RECOGNIZED HIGH QUALITYใ€‘The filter meets European EC1935-2004 Regulations, Australian Water Mark, and has the certifications of TUV, ROHS, REACH, BPA FREE.