1. Fellow of the Association of Applied Geochemists (AAG), 2006 - Present

2. Member of the Geological Society of South Africa, 2014 - Present

3. Member of the Nigerian Mining and Geosciences Society, 2014 - Present

4. Member of the Society of Mining Engineers of AIME, 1981 - 1982

5. Fellow of the Geological Society of Kenya (GSK) since 1990

6. Member of the Geological Society of Africa (GSAf) since 1993

7. Member of the East African Natural History Society (EANHS) since 1990

8. (Former) Executive Committee Member of the „East Africa Geoscientific Network‟

9. Member of the International Water Resources Association (IWRA), 1992 - 1994

10. Member of the New York Academy of Sciences, 1995

11. Member of the International Association of Engineering Geologists, 1995.