H2O Cascade Countertop PurifierH2O Cascade Countertop Purifier (NanoFlow Reverse Osmosis) The H2O Cascade Countertop Purifier with NanoFlow Reverse Osmosis technology provides a reliable source of clean, safe, and refreshing water every day. Designed for ultimate convenience, it removes up to 99. 9% of impuritiesincluding heavy metals, chlorine, bacteria, and other harmful contaminantsensuring every glass of water you drink is pure and greattasting. What makes the Cascade stand out