Originally posted on WASH News International:
One of the most quoted WASH statistics was recently “downgraded”. For every $1 invested in water and sanitation, not $8 but “only” $4 is returned in economic returns through increased productivity. This recalculation , says the World Health Organization, is mainly a result of higher investment cost estimates and the more complete inclusion of operation and maintenance (O&M) costs.
Providing a better insight into O&M costs has been one of the achievements of the WASHCost project of the IRC International Water and Sanitation Centre. WASHCost has published minimum benchmarks for costing sustainable basic WASH services in developing countries . The project collected data from Burkina Faso, Ghana, Andhra Pradesh (India) and Mozambique.