No water filter can filter out lead. None claim to do that on their label. Some filters use a resin to catch lead but the resin declines with use after not too long and lead can get through – especially where there’s too much of it in the water. No doubt of this! That’s why the best a filter can do is claim limited lead reduction. It’s limited. What works is either reverse osmosis or a water distiller. That kind of unit will provide safe drinking water. The best water filters do not remove lead. This is an indisputable fact.