Overview
UWWTP Leiden Noord serves the city of Leiden in Zuid-Holland, Netherlands, treating wastewater for approximately 77,000 people. The plant operates under the EU Urban Waste Water Treatment Directive.
UWWTP Leiden Noord is a municipal wastewater treatment plant located in Leiden, Zuid-Holland, Netherlands. It serves a population of around 77,000, classifying it as a medium to large agglomeration under EU regulations. The plant is situated in the western part of the country, near the coast. As a Dutch facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations of this size. The Netherlands has a comprehensive wastewater management system, and plants like this are typically equipped with advanced treatment to protect sensitive water bodies. The designed capacity is noted as 1. The treated effluent from UWWTP Leiden Noord is discharged into the local water system, which ultimately drains into the North Sea. The plant plays a key role in protecting the region's water quality, supporting aquatic ecosystems and recreational uses in the Rhine-Meuse-Scheldt delta area.
Environmental context
The plant's discharge enters the Rhine-Meuse-Scheldt delta, a complex network of rivers and canals that flow into the North Sea. This coastal region supports diverse aquatic life and is an important migratory corridor for fish. The area is ecologically sensitive due to its proximity to the sea and the high density of human activity.
Frequently asked questions
UWWTP Leiden Noord is located in Leiden, Zuid-Holland, Netherlands, at Flevoweg 27 in the Bedrijventerrein Merenwijk area.
The plant serves approximately 77,383 people, classifying it as a medium to large agglomeration under EU regulations.
The treated effluent is discharged into the local water system, which is part of the Rhine-Meuse-Scheldt delta, ultimately flowing into the North Sea.
As a Dutch plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations over 10,000 population equivalent.
In the Netherlands, plants of this scale typically employ secondary treatment with nutrient removal to meet stringent EU standards, especially given the proximity to sensitive coastal waters.
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