Thesis-1990-Akosa.pdf (21.63 MB)
Appraisal and evaluation of water supply and sanitation projects: Ghana as a case study
thesis
posted on 2010-10-18, 14:30 authored by George AkosaExisting appraisal and evaluation methodologies provide for a
separate assessment of technical, financial, economic, institutional,
social and environmental aspects of projects without a unifying theory
to combine these aspects into a single measure of project performance.
Data Envelopment Analysis is proposed as a methodology for combining
project input and output factors into a single efficiency score which
could be used to rank projects. The efficacy of the methodology has
been demonstrated in an application to data from the water supply and
sanitation sector in Ghana.
This study involved the selection of ten projects in Ghana (six in
water supply and four in sanitation). Each project is a representative
of large urban or small urban or large rural or small rural systems in
operation in Ghana. Various technologies employed in the projects
include:
(a) For water supply:
Conventional Water Treatment Plant
Boreholes with Motorised Pumps
Package Water Treatment Plant
Drilled Wells with Handpumps (2 projects)
Hand Dug Well
(b) For sanitation:
Conventional Sewerage
Communal Ventilated Improved Pit Latrines for an Urban
Community
Communal Ventilated Improved Pit Latrines for Rural
Communities
Traditional Pit Latrine
Data on technical, financial, economic, institutional, social and
environmental factors were collected in a 30-month fieldwork in Ghana.
The fieldwork involved extensive travelling visiting urban and remote
rural communities operating various systems in the sector. The data collected were analysed to provide the basic information for Data
Envelopment Analysis (DEA). DEA requires input and output data for each
project to be used in formulating linear programming models which are
subsequently solved using a personal computer to provide an efficiency
score for each project. Four different formulations were investigated
and the results used to identify which projects could be classified as
efficient given the Ghanaian context in which they are operated.
Suggestions for the improvement of inefficient projects are made using
the efficient projects as models.
In conclusion DEA is recommended as a useful tool in appraisal and
evaluation of water supply and sanitation projects to be adopted in
developing countries, developing banks and other aid donor agencies.
Other specific recommendations are made for the water supply and
sanitation sector in Ghana.
History
School
- Architecture, Building and Civil Engineering
Publisher
© George AkosaPublication date
1990Notes
A Doctoral Thesis. Submitted in partial fulfillment of the requirements for the award of Doctor of Philosophy of Loughborough University.EThOS Persistent ID
uk.bl.ethos.237497Language
- en