The global platform for the Construction Dewatering, Mine Dewatering and Groundwater Control Industry.

Areas of focus

Construction Dewatering

Construction dewatering is linked to construction projects where dewatering is required for excavations, which extend below the standing groundwater level or to a level where instabilities due to the presence of groundwater may occur. Groundwater can then be controlled using an array of extraction methods such as deepwells, wellpoints, eductors, vacuum wells, relief wells, siphon drains, horizontal wells or a combination of these methods. This allows the excavation to proceed in dry, stable and safe conditions.

Mine Dewatering

Mine dewatering uses similar techniques and technology as construction dewatering, but often deals with much deeper excavations and larger volumes of water   Like Construction the fundamentals of safe working are the same, in the case the ability to control water ingress and mine in safe conditions.The Mine Dewatering industry and Construction Dewatering industry are intrinsically linked as they both require an understanding of hydrogeology, dewatering technologies and environmental sensitivities.

Groundwater Control

Groundwater Control primarily deals with the management of groundwater through means other than abstraction.  This is often using physical barriers or cut-off’s such as secant piles, diaphragm walls, slurry walls, or sheet piles. Groundfreezing is also classified as a groundwater control technique. Groundwater Control with physical cut-off’s often includes some form of dewatering.

Education - Knowledge Sharing -
Best Practises - Networking

TDI covers all aspects of the life cycle of a dewatering project; from planning, geotechnical investigation, environmental aspects, system design, installation, operation, system performance review, groundwater treatment, groundwater injection and system decommissioning.

TDI includes and serves a wide variety of stakeholders requiring dewatering, including government bodies, academic institutes, consultants’, clients, contractors, specialist contractors, students, equipment suppliers, manufacturers and industries.

The fundamentals of TDI

Education & Knowledge Sharing

Education and sharing knowledge is an important part of the institute, bridging the gap between academic qualifications, experience and the art of dewatering. We achieve this through:

  • Webinars
  • Training courses
  • Continual professional development
  • Tailored in-house training courses
  • Technical documents, published papers and literature
  • Case studies, news and insights

Networking & Brand Exposure

TDI provides its members with a variety of networking opportunities, creating brand exposure for the various types of members, through:

  • Member’s directory access
  • Website, social media, newsletters TDI member integration
  • Introduction webinars on various dewatering aspects (deepwells, wellpoints, over pumping, booster stations, drilling & equipment)
  • Networking events (online & offline)
  • Sharing branded case studies / insights on TDI platform

Best Practices

TDI promotes the creation and sharing of industry research, literature and short guides for best practices on key aspects as:

  • Geotechnical investigation for dewatering purposes
  • Pump selection, installation and maintenance for dewatering systems
  • Dewatering system operation guidelines
  • Dewatering well installation and drilling
  • Design considerations
  • Groundwater treatment for dewatering systems
  • Monitoring of dewatering systems

Advisory Council

Christoffel Botha

Christoffel has specialised in Construction Dewatering and Groundwater Control for over 16 years. During this time, he has designed, installed and operated more than 350 dewatering systems in Africa, Asia, Europe, North America and the Middle East. He has held key executive level positions working for client, consultant, main contractor and specialised sub-contractors. His project experience extends through small dewatering projects to leading design and construction teams of some of the world’s largest dewatering contactors and consultancies. He has a passion for training and knowledge sharing in his field of expertise.

Timothy D. Lynch

Tim has been employed by Roscoe Moss Company since 1979 and currently serves as its President.  Over the last 42 years he has been involved with production wells for municipal supply, irrigation wells for large commercial growers, water supply wells for mineral processing, aquifer storage and recovery wells, along with dewatering wells used for controlling water levels in mines  and construction related ground control.  He is a committee member of AWWA A-100, responsible for development of water well standards and member of the ASTM D18 subcommittee responsible for standards related to design and construction of monitoring wells.  Business related activities have provided Tim the opportunity to travel and work in over 50 countries throughout the Americas, Asia, Europe, Africa, and Australia.

Dr Kym Morton

Dr Kym Morton is an international expert on mine dewatering design with over 40 years’ experience on over 300 mines. Her qualifications include BSc Hons Kings College, London, MSc Hydrogeology University College London, PhD in mining hydrology Imperial College London and an MBA in innovation from Imperial College London. She is a  Chartered Geologist (UK) , Fellow of the South African Institute of Mining and Metallurgy, Fellow of the Geological Society (UK), Founder member of the groundwater division of the South African Geological Society and a member of MENSA. Dr Morton is well known for her pragmatic approach to mine dewatering design and implementation which combines international hands-on experience with impeccable qualifications.

Eur Ing Dr Stephen Thomas

Stephen is a British and European Chartered Civil Engineer, having over 40 years of experience solving groundwater problems in the Construction and Energy Industries. Stephen is Founder & Managing Director of OGI Groundwater Specialists Ltd, established in 1989 to Design & Install Groundwater Control and Dewatering Systems for a range of both large and small construction projects. Stephen is also a specialist in Mathematical Modelling of groundwater and geotechnical behaviour, having written a number of Finite Element models, which are used to design efficient dewatering systems which have been constructed in numerous projects worldwide. Together with his team at OGI, Stephen has received a number of Ground Engineering Awards for Technical Excellence in the field of Groundwater and Geotechnical Engineering.

Jaap Berendsen

Jaap is specialised in Construction Dewatering and Water Treatment with over 15 years experience in these areas and is currently heading up the international division for Siltbuster Ltd. He has had the opportunity to work on key projects in Europe, North America and the Middle East on both the Consultant, Contractor and Specialist Sub-Contractor’s side. The projects he has been involved in range from singular de-ironing water treatment plan to full-scale groundwater control at 21 different construction sites located in Copenhagen for the city’s metro extension.

Prof. Kai Witthüser

Prof. Kai Witthüser has more than 23 years of experience in hydrogeology, specialising in mining related environmental impact assessments, hydrogeological and geochemical modelling. Kai lectured at the University of Bonn (Germany) and Pretoria (South Africa), before joining Water Geosciences Consulting as a director and groundwater specialist in 2006 (the company merged later with Metago and SLR Africa) and starting Delta h Water Systems Modelling in 2012. He is Affiliated Professor at the Institute for Groundwater Studies, University of the Free State since 2009. Countries of work experience include Austria, Benin, Botswana, Democratic Republic of Congo, Denmark, Germany, Ghana, India, Israel, Morocco, Namibia, Slovenia, South Africa, Tanzania and Zimbabwe

Peter Brooke

Peter brings over 30 years of ground engineering experience to the advisory board.  His career has covered a broad range of disciplines including geotechnics, groundwater abstraction, dewatering and geothermal ground source energy.  Starting in project management roles, Peter has experience in contracts management, operations, country directorship and senior sales director roles that have taken him across Africa, Middle East and Europe during his varied career.  He has been with Fugro since 2010 and currently holds the role of Regional Director for Strategic sales & Marketing for their Europe & Africa region.  Peter specialises in drilling, specifically water well; geotechnical and geothermal sub surface investigations, as well as practical experience installing dewatering systems, geothermal ground source energy and undertaking large scale site characterisation projects.

Join the Dewatering Institute

TDI provides a platform for education and interaction between members across the global dewatering industry, by providing opportunities for networking and knowledge sharing.