E-G

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)

Effectiveness

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)

Efficiency

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)

Effluent

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)

Emergency

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

Equity

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)

Evaluation

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)

Excreta

A combination of urine and faeces (1)

Facilities (sanitation)

Structures that are used to provide sanitation (1)

Facultative ponds

Waste stabilisation ponds that are aerobic at the top and anaerobic at the bottom (6)

Faecal-oral route

Transmission of pathogens from human faeces to a person via the mouth (2)

Faecal sludge management

Set of processes including storage, collection, transport, treatment and safe end-use or disposal of faecal sludge (6)

F diagram

Diagram that shows the pathways for human exposure to pathogens through the faecal-oral route (2)

Focus group

Small group of people who discuss an issue relating to them in an organised session with a facilitator/moderator (3)

Grease trap

A small tank within an outlet pipe that slows the flow of effluent so that oils and fat float to the surface and can be removed (4)

Greenhouse gases

Gases such as carbon dioxide and methane that contribute to human-induced climate change (2)

Greywater

Wastewater from washing, cooking and clothes washing (1)

Grit

Very small pieces of sand, stone and possibly glass and metal found in wastewater (6)