About 60% of our bodies are water, and it's recommended to drink 8 cups of water a day. Don't you want to make sure it's the best water around? With the Everpure H-300-NXT Water Filter Replacement Cartridge, you can rest assured that your water is not contaminated with any lead, sediment, cysts, sand, dirt, rust particles, or the taste and order of chlorine. Best of all, you're doing your part in saving the environment one unpurchased plastic water bottle at a time.