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This research was conducted by Oxford Economics on LIXIL's behalf. The work uses the same economic assumptions from previous research undertaken by the World Bank's Water and Sanitation Program (WSP)1, and uses modelling techniques to build on this prior work to produce an up-to-date and comprehensive estimation of the cost of poor sanitation.
Oxford Economics carried out bespoke econometric analysis to assess the relationship between costs estimated in the WSP study and a variety of driver variables. The Oxford Economics model calculates costs associated to poor sanitation in relation to four of the most significant dimensions originally analysed by the WSP:
This analysis was then used to update the estimated cost in countries covered by the WSP research; and create cost estimates for other countries not covered in the WSP.
The research looks at the costs of poor sanitation for a total of 110 countries.