Innovation in Groundwater

OGI Groundwater Specialists Ltd is an independent, privately owned specialist engineering design, groundwater control and consultancy company predominately servicing the UK construction industry.

Founded in Oxford in 1989 by Dr Stephen Thomas, OGI s expertise is focussed on the design and supervision of groundwater control systems required to lower the water table and reduce artesian pore pressures for large complex underground structures when constructed below the water table.

With more than 25 years of experience of solving groundwater problems, combined with our groundwater modelling skills, OGI provides geotechnical and groundwater engineering designs to overcome challenging and difficult ground conditions encountered during the construction of deep structures, such as basements, bridge footings, tunnels, shafts, swimming pools, underground car parks, and road and rail cuttings.

Dr Stephen Thomas, Managing Director, A chartered engineer with over 30 years’ of Groundwater Control & Engineering experience, Stephen is responsible for our major Construction Dewatering and Groundwater Control Projects. He manages all stages of the Groundwater Control design, from the development of the ground and groundwater models, to the mathematical modelling and the development of the detailed design for construction.

Stephen’s project experience includes the Groundwater Control system installed for London Millennium Bridge, Deephams WwTW in North London, G1 Building in Glasgow, Rolls Royce structures in Derby and numerous other major infrastructure project.