At the end of each definition in this Glossary there is a number in brackets. This indicates the number of the Study Session where the term is first used in this OpenWASH module.

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ecological sanitation (ecosan)

sanitation systems that allow the recovery of resources from the urine and faeces for use as a soil conditioner, liquid fertiliser or biogas (5)


extent to which the purpose of a programme or project has been achieved. In ISWM, it is a principle stating that a waste management system must meet the needs of the waste plan and of the local people (11)


increasing the output for a given input of resources, or minimising the input for a given output. In ISWM, it is a principle stating that the waste management system should make the best use of money, people and other resources (11)


another term for wastewater that flows out from a source (4)

electronic and electrical waste (e-waste)

waste electrical and electronic equipment and goods (1)


sudden and unforeseen event that calls for immediate action to minimise its adverse consequences (14)


allocation of resources, services and opportunity to all segments of the population according to their needs. In ISWM, it is a principle stating that everyone has a right to an effective and safe waste management service (11)


objective assessment part way through or at the end of a project to assess its design, implementation and results, and the extent to which the stated objectives have been achieved (15)


a combination of urine and faeces (1)

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