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, the top-selling brand in lead filtration among filters certified to reduce lead, brings you a replacement filter that removes 99% of lead and reduces many other contaminants. PUR's MAXION filter technology provides superior filtration and performance by using activated carbon and ion exchange to reduce more contaminants than any other brand.