1) The provision of facilities and services for the safe disposal of human urine and faeces. Inadequate sanitation is a major cause of disease world-wide and improving sanitation is known to have a significant beneficial impact on health both in households and across communities. 2)The maintenance of hygienic conditions, through services such as garbage collection and wastewater disposal. (Source: WHO)

The study and use of practical measures for the preservation of public health. (Source: GEMET/CED)