Return to Thomson Group

01483 466 000

Water services

We have a large team of specialists with expertise in all aspects of water resource management and hydrology - marine and freshwater. We offer a range of services including

Water Framework Directive assessments

We undertake WFD assessments for construction projects, and maintenance and capital dredge campaigns in line with EA guidelines. Our marine consultants provide expert advice on the assessment process and carry out the assessment.

Marine and coastal EIA

We manage ecological impact assessments on marine and coastal projects, covering a range of species and parameters: botany, invertebrates, protected species, birds, marine mammals and hydromorphology. Our marine consultants have over 20 years’ experience advising licensing authorities on the outcomes of EIAs and the quality of Environmental Statements (ES).


Water is one of our most precious natural resources. Without it, there would be no life on earth. Hydrology has evolved as a science in response to the need to understand the complex water system of the earth and help solve water problems. Although it is plentiful, water is not always in the right place at the right time or of the right quality. An overall aim of hydrologists is to apply scientific knowledge and mathematical principles to mitigate water-related problems in society and environmental protection. This may mean working out the best use of water supplies for cities or for irrigation, controlling river flooding or soil erosion, protecting or cleaning up pollution, and planning long-term water storage reservoirs, flood risk assessment and flood or drought warning. Our specialists carry out surface and groundwater investigations and modelling, and have worked on a variety of projects, including international work such as large-scale wetland restoration works at Al Ha’ir Lakes in Saudi Arabia.


There is a continuous movement of water on, above or below the surface of the Earth. Water changes its physical state – liquid, vapour or solid – at various points within the water cycle. Our team are experienced in evaluating the flow characteristics, quantity and quality of underground water by interpreting data, completing investigations and sampling, and using modelling techniques.

Wetland Habitat Design and Creation, Hydroecology

Hydroecology is necessary when assessing how a development will impact wetlands. Our team of specialist ecologists evaluate wetlands, provide wetland impact assessments, and deliver Sustainable Drainage Systems (SuDS). We solve wetland management problems and design wetlands to fulfil biodiversity and sustainability potential. And, with help from our sister company, Thomson Habitats, and our ecological landscape architects, we design and physically create wetlands including earthworks and excavations, pond lining, filling, planting, and installation of features including paths and viewing platforms.

Water quality monitoring

Water quality monitoring is a basic tool in the management of freshwater assets, including lakes, rivers, canals and ponds. We have a well-equipped in-house laboratory. Our aquatic specialists design structured plans and water-quality monitoring programmes; can develop a response plan with assessment and remediation options if problems arise; and undertake maintenance to keep your water assets healthy.

Flood defence work

We have worked on flood defence schemes all over the UK, providing solutions for government bodies, utility companies and housing organisations. We can obtain flood defence consents and can advise on the best solutions. Thomson Habitats have extensive experience of flood defence enabling works and post-development landscaping.

Water services Water services Water services