Our revolutionary Optim H2O 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 Optim H2O treats it right. The Optim H2O whole house filter comes with a 90-day satisfaction guarantee and a five year warranty. Compare to Pelican Water, Express Water, Spring Well Water Filtration Systems, Ne Aqua Systems, Bluonics, Hardless NG, Culligan, APEC Water Systems, i Filters, & More!