Anabel Matalanga and Neil Armitage 2025. Reduction of pollution levels in the Chatty River, Gqeberha, South Africa, through sustainable drainage systems: Bethelsdorp sub-catchment case study. Water SA. 51, 2 April (Apr. 2025). DOI:https://doi.org/10.17159/wsa/2025.v51.i2.4122.