Phoslock will remain on the shelf for now
Lansingerland - The application of controversial lanthanum-containing clay to bind phosphate in the surface water in the Bleiswijkse Zoom and thus combat the formation of blue-green algae has been discontinued for the time being. The Board of Dike Counts and Water Boards (D&H) decided to do so during the United Meeting of the Schieland and Krimpenerwaard water boards on 7 October last.
In an extensive interview on 20 May, we informed you about the intention of the Schieland and Krimpenerwaard water board to combat blue-green algae in the surface water in the Bleiswijkse Zoom. This can be done by removing the nutrient source for the formation of blue-green algae, the phosphate-rich dredging layer, and by binding the free phosphate in the soil with the help of lanthanum clay (Phoslock®).
Concerned residents then united with Rotta to put pressure on the water board through an online petition. They want to persuade the water board to abandon the controversial use of this method altogether. However, according to the water board, Phoslock® can be used safely. This is based on international studies and research from, among others, Wageningen University & Research.
The Board of D&H has now promised that Phoslock® will not be used in surface water within the Schieland and Krimpenerwaard water board, in both the Bleiswijkse Zoom and the Kralingse Plas. This was the result of the action group speaking during the meeting. Because too much is unclear and the application of Phoslock® has never been part of a decision, this will be discussed again during a committee meeting on 5 November.
“This is the current state of affairs and this is how democracy works,” writes speaker Cees van der Burg on behalf of Rotta and the action group.
