With the classicclear Water Filter Replacement, you'll get up to 100 gallons of clean, filtered water. That's 2-3 months of clean water right from your faucet-filtered to remove 99% of lead and microbial cysts (cryptosporidium and giardia), and reduces many other substances like 99% of pharmaceuticals. In fact, the PUR classic clear Water Filter Replacement reduces 10X more substances than the leading pitcher.