Domestic wastewater generation, treatment, and agricultural reuse

Safely managed wastewater is critical to water-related sustainable development. With a focus on the domestic wastewater component of SDG 6.3.1, this study reports that household activities worldwide generate 267.5 billion m³ yr^− 1 of wastewater, of which 63% (168.8 billion m³ yr^− 1) is collected in sewers and septic tanks, and 54.7% (146.3 billion m³ yr^− 1) is treated. In comparison, 45.3% (121.2 billion m³) is released to the environment in …