The departments of Water and Sanitation (DWS) and Forestry, Fisheries and the Environment (DFFE) are reviewing complaints and concerns in the public domain over the use of chemicals as part of a programme to eliminate water lettuce in the Vaal river. https://www.engineeringnews.co.za/article/dws-dffe-to-probe-clearing-methods-at-vaal-are-aligned-with-regulatory-environment-2024-02-19