 They are involved in a variety of activities, for example inspecting food facilities, investigating public health nuisances, and implementing disease control, conducting work place safety assessments and accident investigation.Environmental health officers are focused on prevention, consultation, investigation, and education of the community regarding health risks and maintaining a safe environment.EHOs bring to the position an understanding of microbiology, risk assessment, environmental science and technology, food science, knowledge of the built environment as well as the skills and knowledge related to the tracking and control of communicable disease, investigation of environmental health related incidents and criminal investigations.