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Investigation bodies for sewage sludge

Because of its content of organic substances and plant nutrients, sewage sludge has been used for fertilization for years. However, sewage sludge may only be applied to agricultural or horticultural soils in such a way that the well-being of the general public is not adversely affected. Therefore, the content of pollutants such as lead, cadmium, chromium, copper, nickel, mercury, zinc is regularly checked by examination bodies for sewage sludge. The studies relate both to the sewage sludge itself and to the soils on which they are applied.

Source: Serviceportal Niedersachsen (Portalverbund des Bundes und der Länder)

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