DHI, the corporate name of the company today, is the result of a merger in October 2005 between DHI Water & Environment and Danish Toxicology Centre (DTC). Prior to that DHI Water & Environment had been established after a merger between Danish Hydraulic Institute (DHI) and Institute for the Water Environment (VKI) in 2001.
- granted approval by the Danish Minister for Science, Technology and Innovation as an Authorised Technological Service Institute (since 1973)
- designated the World Health Organization (WHO) Collaborating Center for Water and Health (since 2004) in continuation of being the WHO Collaborating Centre for Water Quality Assessment (since 1993)
- designated as a Resource Centre for the Global Water Partnership (since 2000)
- designated the United Nations Environmental Programme (UNEP) Collaborating Center for Water and Environment (since 2004) in continuation of being the UNEP Collaborating Center for Freshwater Quality Monitoring and Assessment (since 1976)
- certified as an Authorised Provider of Continuing Education Units by the International Association for Continuing Education and Training, IACET (since 2001)