While tap water may look clean, lead can get into your water through leaching lead service lines, or from lead contained in household plumbing. PUR is the #1 Selling brand in lead filtration among filters certified to reduce lead (Based on Nielsen sales data for the 52 weeks ending 07/03/21). Reduces mercury and certain pesticides. Reduces chlorine (taste and odor) and more (PUR does not filter microbes).