Derek Weston


Practice Specialisation: Water

Derek is an Associate Director, with some 25 years’ experience in the water sector. With a BSc Honours in hydrology, Derek spent much of his early career focusing upon hydrological modelling and the use of models for supporting management decisions. Derek joined the Department of Water Affairs in 1991 and, after a number of years working on water quality and resource protection related projects, he became a lead agent for the establishment of Catchment Management Agencies and Water User Associations. Through his work in DWA Derek championed the understanding of resource governance, as well as the critical importance of institutional and stakeholder processes within the sector. He was part of the team that led the initial thinking on Catchment Management Strategies and their content and structure.


Derek sees the critical role that water can play in changing people’s lives, and in his later years in DWA he managed a large donor-funded programme focused upon community development and upliftment via water-based projects.


Since joining Pegasys in 2008, Derek has worked on a wide range of water resource and institutional development projects, both within South Africa and internationally. Being practical in nature, Derek sees that in many instances that we need to pragmatically get on and implement policy, but he also sees that we need to rethink our water resource management paradigm.


Derek has extensive experience in policy development as well as implementation support and oversight. He has been very involved in processes of stakeholder identification, analysis and participation, as well as initiatives to build capacity within the water sector. Derek has considerable experience in project management and in leading, and working in, multi-disciplinary teams.


Pegasys  Executive Management (2011 – date)

  • COLVIN J., BALLIM F., CHIMBUYA S., EVERARD M., GOSS J., KLARENBERG G., NDLOVU S., NCALA D. and WESTON D. R. 2008 Building Capacity For Co-Operative Governance As A Basis For Integrated Water Resources Managing In The Inkomati And Mvoti Catchments, South Africa. Paper for the IWRM IHP conference , Stellenbosch, South Africa, March 2008.
  • WESTON, D.R and WESTON, B.C. 2008 South Africa’s journey to equity, sustainability and efficiency. In: Water, Wildlife and People: Special Edition of Environmental Scientist. Jnl of the Institution of Environmental Sciences. October 2008.
  • MBEDZI S.S, SHORT R. W., WESTON D.R. and WULLSCHLEGGER N.J. 2008 A Rights-Based Approach To IWRM: Empowering Communities To Engage In Water Management Institutions. Paper for the IWRM IHP conference, Stellenbosch, South Africa, March 2008.
  • WESTON, D.R. 2003 IWRM: How We Interact Will Determine How We Succeed. Proceedings of the 2nd International Symposium on Integrated Water Resource Management: Towards Sustainable Water Utilisation in the 21st Century. 22 – 24 January 2003. Stellenbosch, South Africa
  • WESTON, D.R. 2002 The National Water Act says “Hey! Lets Talk”: But Are We Understanding Each Other?. Proceedings of the Water Institute of South Africa: Biennial Conference and Exhibition. 19 – 23 May 2002. Durban, South Africa.
  • DWAF 2002 Integrated Water Resources Management: Catchment Management Agencies and Local Government (Prep. D Weston). Umsebenzi Newspaper July 2002.
  • KARODIA, H.E. and WESTON, D.R. 2000 South Africa’s New Water Policy and Law. Proceedings of the workshop on Integrated Water Management in Water Stressed River Basins in Developing Countries: Strategies for Poverty Alleviation and Agricultural Growth. 16 – 21 October 2000, Loskop Dam, South Africa.
  • WESTON, D.R., KHOROMMBI, K.C. and KARODIA, H.E. 2000 Ensuring the Adoption of Integrated Water Resource Management at a More Localised Level. Proceedings of the Water Institute of South Africa: Biennial Conference and Exhibition. 28 May – 1 June 2000 Sun City, South Africa.