Our revolutionary OptimH2O whole house filter is IAPMO tested and certified to reduce more than 99% of lead and cysts and 98% of PFOA/PFOS. It also tackles chlorine, chloramines and much more. Experience optimal water filtration for the cleanest and healthiest water. No matter how your city treats your water, the OptimH2O treats it right. The OptimH2O whole house filter comes with a 90-day satisfaction guarantee and a five year warranty. Compare to Pelican Water, Express Water, SpringWell Water Filtration Systems, Ne Aqua Systems, Bluonics, Hardless NG, Culligan, APEC Water Systems, iFilters, & More!