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fermer ce livreA Guide to the Development of on-site Sanitation (WHO; 1992; 246 pages)
Afficher le documentPreface
ouvrir ce répertoire et afficher son contenuPart I. Foundations of sanitary practice
ouvrir ce répertoire et afficher son contenuPart II. Detailed design, construction, operation and maintenance
fermer ce répertoirePart III. Planning and development of on-site sanitation projects
fermer ce répertoireChapter 9. Planning
Afficher le documentThe demand for sanitation
Afficher le documentProject definition
Afficher le documentBackground information
Afficher le documentComparison and selection of systems
ouvrir ce répertoire et afficher son contenuChapter 10. Institutional, economic and financial factors
ouvrir ce répertoire et afficher son contenuChapter 11. Development
Afficher le documentReferences
Afficher le documentSelected further reading
Afficher le documentGlossary of terms used in this book
Afficher le documentAnnex 1. Reuse of excreta
Afficher le documentAnnex 2. Sullage
Afficher le documentAnnex 3. Reviewers
Afficher le documentSelected WHO publications of related interest
Afficher le documentBack Cover

Project definition


Early in the planning process the extent of the programme or project must be assessed. This involves making an estimate of the number of people or households who will be covered. A house-by-house survey may be undertaken, or the necessary information obtained from health staff, government departments or local leaders.

Priority areas

A list is drawn up comparing the needs of different areas. Priority should be given to people with especially poor facilities for excreta disposal and areas with a high incidence of diseases associated with poor sanitation. Areas with a high population density or congested housing may justify special attention. However, houses intended for temporary occupation may warrant less attention than permanent buildings.

Other factors that influence the selection of priority areas are the interest of the local communities in sanitation improvements and their record of participation in other projects. Ability and willingness to contribute financially may be other criteria for the selection of priority areas. Projects generally depend on a financial contribution from householders; occasionally priority is given to people most likely to pay or those willing to try new ideas. For projects that are externally funded, the poorest people may be selected for preferential treatment, on the assumption that better-off families should pay for their own latrines.

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