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We would very much appreciate you informing us on how you base your calculations on the profitability on water, or possibly its quality.

There are several water quality and quantity indicators used in the Environmental Sustainability Index, which can be accessed through The full methodology is described – we do not have a ‘profitability’ indicator, but the quality indicators were derived from the UNEP/GEMS data set. Country scores were compiled as an average of the station-level scores for each country.

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