As part of the programme of investigations concerning animal health problems at Askeaton, County Limerick, being co-ordinated by the Environmental Protection Agency (EPA) my Department has responsibility for the veterinary aspects of the programme. In addition to biochemical, haematological and pathological studies a veterinary retrospective epidemiological study of animal health in the area has been initiated. The essential thrust of this descriptive study is to assemble detailed information on the animal health position in the area, to confirm the information received and to establish whether there are any patterns to the animal health problems which might throw light on the causes, e.g. location with respect to potential pollution sources or similarities in regard to certain animal husbandry practices.