De Aar Military Base Ammunition Depot Wastewater Treatment Plant, Emthanjeni, Northern Cape

De Aar Military Base Ammunition Depot is a wastewater treatment plant located in Emthanjeni Ward 6, within the Emthanjeni Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa. The plant provides secondary treatment for wastewater generated from the military base and surrounding areas. As a secondary treatment facility, the plant meets the standard required under South Africa's National Water Act (Act 36 of 1998) and the Water Services Act (Act 108 of 1997), which mandate appropriate treatment levels to protect water resources. It supports the local community and military infrastructure. The treated effluent is discharged into the local watershed, which ultimately drains into the Orange River basin, a major river system in South Africa. The Orange River flows into the Atlantic Ocean, supporting diverse aquatic life and agricultural activities along its course. The plant plays a role in maintaining water quality in this semi-arid region.

The plant discharges into the Orange River basin, which flows westward through the Northern Cape and into the Atlantic Ocean. The region is semi-arid, and the river supports irrigation, livestock, and wildlife. Downstream ecosystems include the Orange River mouth wetland, an important habitat for migratory birds and fish species. Protecting water quality is critical for both ecological health and human use.