Namugize, JN, and GPW Jewitt. “Sensitivity Analysis for Water Quality Monitoring Frequency in the Application of a Water Quality Index for the UMngeni River and Its Tributaries, KwaZulu-Natal, South Africa”. Water SA 44, no. 4 October (October 31, 2018). Accessed May 4, 2024. https://watersa.net/article/view/6618.