Advancing Wastewater Management: Policies and Sustainable Solutions for Global Water Security

In recent years, the mismanaged disposal of waste into water resources has increased, leading to the generation of an estimated 360–380 billion cubic meters (BCM) of wastewater annually across the globe. This wastewater contains a range of harmful and persistent contaminants from agricultural, industrial, and domestic activities, posing significant risks to public health, the environment, and ecosystems. This review highlights the policies implemented by various nations for wastewater disposal and reuse, with a focus on bioremediation technologies adopted by urban regions to address water stress and inconsistencies in water management and discharge practices. The application of newer technologies along with statistical computer systems for predictive modeling and analytics are crucial in achieving sustainable wastewater treatment and reuse. These advancements are critical for mitigating water crises and enabling the safe use of treated wastewater for irrigation, aquaculture, agroforestry, landscaping, aquifer recharge, and even potable purposes. Ultimately, this review underscores the importance of sustainable alternatives in wastewater treatment to combat water pollution and secure water resources for the future.