1. Discipline of Microbiology, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal (Westville campus), Durban, South African
2. Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein, South Africa
3. Department of Agriculture, Central University of Technology, Bloemfontein, South Africa
4. Department of Life Sciences, Central University of Technology, South Africa
5. Department of Chemical Engineering, Faculty of Engineering, Built Environment and Information Technology, University of Pretoria, Hatfield, Pretoria, South Africa
6. Institute of Groundwater Studies, University of the Free State, Bloemfontein, South Africa
7. Department of Animal Sciences, University of the Free State, Bloemfontein, South Africa
8. Water Solutions Pty Ltd, Centre for Water Science and Management, North West University, Potchefstroom, South Africa