Overview
UWWTP Cruquius in Haarlem, Netherlands, is a closed advanced treatment plant with a designed capacity of 810 m³/day. It served the local area before decommissioning.
UWWTP Cruquius is a former wastewater treatment plant located in Haarlem, in the province of Noord-Holland, Netherlands. The plant was designed with advanced treatment capabilities and a capacity of 810 cubic meters per day, serving the local community before its closure. As an advanced treatment facility, UWWTP Cruquius would have been equipped to remove nutrients such as nitrogen and phosphorus, meeting stringent Dutch water quality standards. The Netherlands, as an EU member state, implements the Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for plants in sensitive areas. The plant's treated effluent would have discharged into local waterways, ultimately contributing to the North Sea via the Rhine-Meuse-Scheldt delta. The region's dense population and intensive agriculture make nutrient removal critical for protecting downstream aquatic ecosystems and coastal waters.
Environmental context
The plant is located in the Rhine-Meuse-Scheldt delta, a complex network of rivers and canals that drain into the North Sea. This watershed supports diverse aquatic life and is important for migratory fish. Nutrient pollution from wastewater can contribute to eutrophication in coastal waters, making advanced treatment essential for protecting the marine environment.
Frequently asked questions
UWWTP Cruquius is located in Haarlem, in the province of Noord-Holland, Netherlands. The address is near the Haarlemmermeersche Golfclub, Hommeldijk, Zuid-Schalkwijk, Haarlem.
The plant had a designed capacity of 810 cubic meters per day, indicating it served a relatively small community or industrial area.
The plant is listed as closed, which may be due to consolidation of wastewater treatment in the region or upgrades to newer facilities. Specific reasons for closure are not publicly available.
UWWTP Cruquius provided advanced treatment, which includes nutrient removal (nitrogen and phosphorus) beyond secondary treatment. This is typical for plants in sensitive areas under the EU Urban Waste Water Treatment Directive.
As a Dutch plant, it operated under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for all agglomerations and advanced treatment in sensitive areas. The Netherlands applies strict nutrient removal standards to protect the North Sea.
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