Waterschap Hollandse Delta (WSHD) is a Dutch

regional water authority A regional water authority, commonly known as a water board, was one of a group of public bodies that came into existence in England and Wales in April 1974, as a result of the passing of the Water Act 1973. This brought together in ten regional u ...

covering the south of South Holland with its seat in

Ridderkerk Ridderkerk () is a town and municipality in the western Netherlands, in the province of South Holland. The municipality had a population of in and covers an area of of which is covered by water. The municipality of Ridderkerk also includes th ...

. The area it encompasses includes Rotterdam (south of the

Nieuwe Maas The Nieuwe Maas (; "New Meuse") is a distributary of the Rhine River, and a former distributary of the Maas River, in the Dutch province of South Holland. It runs from the confluence of the rivers Noord and Lek, and flows west through Rotterd ...

) as well as the (former) islands

Goeree-Overflakkee Goeree-Overflakkee () is the southernmost delta island of the province of South Holland, Netherlands. It is separated from Voorne-Putten and Hoeksche Waard by the Haringvliet, from the mainland of North Brabant by the Volkerak, and from Schou ...

Hoeksche Waard The Hoekse Waard (; pre-1947 spelling: Hoeksche Waard) is an island between the Oude Maas, Dordtsche Kil, Hollands Diep, Haringvliet and Spui rivers in the province of South Holland in the Netherlands. The island, part of the namesake munic ...

Voorne-Putten Voorne-Putten is an island between the North Sea, the Brielse Meer and the rivers Oude Maas, Spui and Haringvliet in the province of South Holland. Voorne-Putten consists of the two former islands Voorne (the larger, western part) and Put ...

, the Island of

Dordrecht Dordrecht (), historically known in English as Dordt (still colloquially used in Dutch, ) or Dort, is a city and municipality in the Western Netherlands, located in the province of South Holland. It is the province's fifth-largest city after R ...

, IJsselmonde,

Rozenburg Rozenburg () is a town and former municipality in the western Netherlands, in the province of South Holland. The municipality had a population of 13,173 in 2004, and covers an area of 6.50 km² (of which 1.99 km² water). It was the ...

and

Tiengemeten Tiengemeten is an island in the Dutch province of South Holland. It is a part of the municipality of Hoeksche Waard and lies about south of Spijkenisse. Before 1984 the island was administratively split between Goudswaard and Zuid-Beijerland, ...

. It is responsible for water management,

water quality Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through tr ...

and sewage

water treatment Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, inc ...

and was formed from a merger of 4 regional water authorities in January 2005.

References

External links

* {{Authority control Hollandse Delta South Holland Ridderkerk