ESI is an innovative, high quality, independent consultancy providing practical solutions to soil and groundwater problems. We specialise in the application of quantitative hydrogeological techniques to site investigation, monitoring, data management, groundwater modelling, risk assessment and remedial design. In addition to our consultancy services, ESI is recognised worldwide as a leading developer and publisher of groundwater software. ESI software has gained an industry-wide reputation for its powerful capabilities and user-friendly interfacing. Used by consultants, regulators and researchers across the globe, it has become the software of choice for environmental professionals. 

ESI has a well established course programme that provides practical training for environmental professionals involved in water resources and soil and water contamination issues.