❄【NSF/ANSI 42 CERTIFIED】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. ❄【NSF/ANSI 372 CERTIFIED IN WQA & IAPMO】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. ❄【100% MONEY-BACK GUARANTEE】 Six-Months Return Policy Guaranteed! Product Life Time Warranty on Every Filter Confirmed With Defects in Material and Workmanship Within Each Filter's 6 Months Service Life. We promise a risk-free shopping experience backed up with our reliable customer service and technical support team.