Environmental Health Testing, LLC (EHT) is the only certification management company focused on developing certification programs and related tools for the growing environmental health field. EHT has been in business since 1998 and conducts business in all fifty U.S. States, Canada and nineteen foreign countries. Environmental Health Testing, LLC (EHT) is an independent company formed through partnerships between the Chartered Institute of Environmental Health and Professional Testing, Inc. The Chartered Institute of Enviromental Health is England's leading independent environmental health charity and an official World Health Organization Collaborating Center for Environmental Health Management. Professional Testing is an assessment and test development company. Professional Testing, Inc. has been preparing and administering examinations for a variety of professionals including contractors, physicians, architects, real estate agents, periodontists and airline pilots for more than 25 years.