We all need clean, plentiful water for a human-centered, sustainable future. We have opportunities to design for water during the next twenty years. Climate change means more chaotic weather. Chaotic weather makes water management more important. Old ways of managing water don't work anymore. People are healthier, happier and more peaceful when they have plenty of clean water. We need designs for water pumps, surface water intakes, and treatment systems for affordable, sustainable potable water. We need designs for cisterns and water tanks for new and renovated construction. We need designs for storm and flood resistant housing in coastal and floodplain areas. We need designs for green roofs and paving that will slow runoff, conserve water and keep the neighborhood cooler. We need designs for agriculture that manage water better.