"ESI has successfully delivered complex technical skills to meet the expectations of the Environment Agency and has demonstrated an excellent understanding of, and innovative solutions to, the issues facing Severn Trent Water Ltd."
/ Severn Trent Water


We deliver the UK’s market leading capability and technical expertise in hydrogeology and water resource management.


With one of the largest groundwater science teams in the country, we deliver unrivalled value to our wide range of clients for field investigation, groundwater modelling and flow monitoring.  As a specialist consultancy, we have a long and comprehensive experience in managing multi-disciplinary teams, including hydrogeologists, ecologists and engineers.


Our consultancy partnership approach directly supports the key innovation drivers for utility companies as they face critical challenges within the Water Framework Directive.


We work to the most exacting standards demanded by our clients, including the most stringent framework quality agreements. We are an active partner on numerous national and international frameworks.


Our project management, quality control, health and safety standards achieve the procurement requirements required. This ensures that we are chosen as a specialist partner with confidence.

Why work with us?

We are recognised as the leader in water resource services, dealing with all aspects of groundwater science and groundwater resource management. Our strength in depth comes from our well-earned reputation of our high quality, high-calibre hydrogeology and groundwater science team, backed by innovative and unique modelling expertise.


This enables us to support a diverse range of clients, with extensive experience in supporting framework based projects with water utilities, tunnelling companies, local authorities and regulatory bodies.

Our Services

Thames Water

We are proud to be an accredited supplier to the Achilles UVDB procurement platform for UK utility businesses