Technical work in the field of environmental health. An employee in this class is responsible for the enforcement of Public Health Laws, bye-laws and regulations and may be assigned to a specified health district in respect of such matters. Duties include the control of rodents and insect vectors; inspection of buildings, poultry depots and hatcheries, food establishments, residential areas, meat and other foods and of animals to be slaughtered, as well as ensuring the safety of water and the environment. Work is performed under the direction of a superior officer and is reviewed through technical reports and conferences for conformity to programmes, policies and procedures.