US demand for consumer water and air treatment systems will rise 5.5 percent annually to $2.3 billion in 2019. Whole-house systems will be the fastest growing within both the air and water treatment segments. Among consumables, salt will offer the best growth opportunities, followed by water filters and membranes.This study analyzes the $1.8 billion US consumer market for water and air treatment systems. It presents historical demand data (2004, 2009 and 2014) and forecasts (2019 and 2024) by technology (e.g., conventional filtration, reverse osmosis, distillation, ion exchange, electrostatic, ionic), product (e.g., whole house and point-of-use water treatment systems, whole house and portable air treatment systems, consumables), and US region.The study also considers market environment factors, details industry structure, evaluates company market share, and profiles 35 industry players, including Helen of Troy, General Electric, and Clorox?s Brita unit.