Rainwater is a resource. Not waste.
Rainwater is often seen as waste. Rainwater is free of charge and the source of all living things. By draining it through pipes, we label it as waste. This isn’t right. Rainwater is useful, especially in cities. It cools, feeds plants, supplements groundwater and can replace drinking water in many occasions. Most direct example: the irrigation of the roof garden above the Polder Roof system. It requires zero drinking water and facilitates greater bio diversity! Win-win.