Global Wastewater Status

Country-level estimates of wastewater production, collection, treatment and reuse

Wastewater treatment plant

Continually improving affordable wastewater management provides opportunities for both pollution reduction and clean water supply augmentation, while simultaneously promoting sustainable development and supporting the transition to a circular economy.

Based on a study by Utrecht University and UNU-INWEH, substantial differences in per capita wastewater production, collection, treatment and reuse have been observed across different geographic regions and by level of economic development.

For example, while an estimated 52% of wastewater is treated globally, treatment rates vary drastically between high-income (74%), upper-middle income (43%), lower-middle income (26%) and low-income (4.3%) countries.

Wastewater Treatment