 They therefore must also have strong investigative skills and a thorough understanding of the application of legislation related to public health, the built environment, pollution control and workplace safety.Working in partnership with Government Ministries (such as Health, Agriculture and Environment), local municipalities, businesses, community groups, other agencies and individual members of the community, the EHO plays a major role in protecting public health.Some past/historic titles include inspector of nuisances, sanitarian, and sanitary inspector.