According to WoodMcKenzie, Global GDP is projected to reach $170 trillion by 2050. A World Bank report on Climate Change and Water suggests that investing in United nations Sustainable Development Goal #6 "Global Water Security" mitigates the potential loss of up to 6% or $10.2 trillion of global GDP per year. There are two key aspects around financing SDG 6 for the future. By far the largest amount is what must be financed by governments and municipalities to support freshwater extraction, delivery and sanitation. The OECD estimates approximately $1.7 trillion investment (3x the current spend) needed until 2030 to achieve SDG 6. Moreover, this represents only a fraction of the SDG 6 investment agenda: projections of global financing needs for freshwater infrastructure range from $6.7 trillion by 2030 to $22.6 trillion by 2050 and these figures do not cover the development of freshwater resources for irrigation or energy (they are wrapped into the clean energy investment estimates).

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Acting on and investing in SDG 6 now mitigates catastrophic human, environmental and economic losses on a scale the world has not seen before.

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