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Amsterdam Water Supply Dunes

Part 1: Trees

 

Amsterdam Water Supply Dunes is an area between the coastal cities of Zandvoort (North-Holland) and Noordwijk (South-Holland), The Netherlands.

 

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The Amsterdam Water Supply Dunes have supplied drinking water to the capital since 1853. Before that the people of Amsterdam used to get their water from the canals (the same into which they threw their rubbish). Rhine water is purified by coagulation with the addition of ferric chloride and by rapid filtration in sand and gravel containers. The purified water flows into the dunes and slowly settles into the soil where biological processes ensure for further purification for 60 to 400 days. The dune water receives secondary treatment by aeration, rapid filtration, hardness reduction, ozonation, carbon filtration and slow sand filtration.

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Uploaded on April 15, 2013
Taken on April 13, 2013