The story about the birth of the Drecht cities reads like a page-turner. In 1421, the St. Elisabeth’s Flood wiped a large part of the Netherlands off the map. But the area bounced back, reinvented itself and has transformed into the breeding ground for the best dike builders, dredgers, marine engineers, bridge builders and shipbuilders. Waterproof is a book about a special area: the Drecht cities and their surroundings. They have one thing in common: life and work in a region that is being dominated by water. Six hundred years a er the violent flood, Waterproof pays tribute to the Drecht cities. This book tells the exceptional story about the origin of the landscape, the eternal battle against the water and the businesses that have settled here. Innovation seems to be in the water in the Drecht cities. The organisations that call this area their home have innovative ideas and are renowned far beyond the national borders.