Delfland Water Board  Delfland is one of our country's twenty-
four water authorities. The area in which Delfland operates is
bordered by the North Sea, the Nieuwe Waterweg and the Berkel en
Rodenrijs line, Zoetermeer and Wassenaar. On an area of 41,000
hectares, about 1.4 million people live and work, and
approximately 40,000 businesses are established. This makes the
Delfland region one of the most densely populated and most
highly industrialized areas of the Netherlands. The region is
furthermore renowned for its intensive glasshouse horticulture.
The three key tasks of Delfland - maintenance of dikes and dams,
water level control, and water quality control - initially do
not seem to have much in common. But you can't tell a book by
its cover. Often you cannot view one task separate from the
other. The manner in which you construct and maintain quays, for
example, has consequences for the quality of the water. Which is
why Delfland always performs its tasks with "a broad view". In
other words: taking into