Zastron Wastewater Treatment Plant, Mohokare Local Municipality, Free State

The Zastron wastewater treatment plant is located in the town of Zastron, within the Mohokare Local Municipality in the Free State province of South Africa. The facility serves a population of about 9,620 people, classifying it as a small to medium-sized agglomeration under South African water management frameworks. South Africa's wastewater treatment plants are regulated under the National Water Act (Act 36 of 1998) and the Water Services Act (Act 108 of 1997), which set standards for effluent discharge and water quality. For plants serving populations of this scale, secondary treatment is typically required to meet general effluent standards before discharge into receiving water bodies. The plant discharges into local watercourses that ultimately drain into the Orange River basin, a major river system in southern Africa. The Orange River flows westward to the Atlantic Ocean, supporting diverse aquatic ecosystems and providing water for agriculture and communities along its course.

The Zastron plant discharges into the Orange River basin, which is the largest river basin in South Africa. The Orange River flows through arid and semi-arid regions, making water quality management critical for downstream ecosystems and human use. The river supports a variety of fish species and is an important migratory corridor for birds. Effluent from the plant must meet standards to protect the ecological health of this vital waterway.