Algeria accused Morocco of sending "poisoned water" through the rivers on Algeria's western border. Algerian authorities accused Moroccan industrial facilities in the Oujda region of causing severe transboundary water pollution that contaminated shared water sources, including the Hammam Bougarra dam in Talmesan. Algerian officials and reports have claimed that hundreds of Moroccan industrial units are discharging heavy pollutants - such as phosphates, nitrates and zinc - into waterways such as the Oud Mouila and the Mouloua basin, which flow into Algerian territory.