1.5.1.1 Why Effluent Reuse Matters: Ensuring a Water-Secure Future

New data from the WRI’s Aqueduct Water Risk Atlas reveals that 25 countries, home to a quarter of the global population, face extreme water stress. This means they regularly use nearly all available water, leaving little margin for emergencies. Additionally, about 50% of the world’s population experiences high water stress for at least one month per year. This level of water stress endangers lives, jobs, food, energy security, and even political stability. Water plays a central role in various essential activities, from growing crops and raising livestock to generating electricity and maintaining human health. Amidst population growth, economic development, and climate change, water stress is predicted to worsen, making it crucial to find effective solutions.

The importance of (waste) water reuse emerges as a vital strategy in combating water stress. Reusing treated wastewater for irrigation and fertilisation can alleviate pressure on freshwater sources. As the population grows, so does water demand. However, the burden on limited water supplies can be eased by recycling treated effluent (wastewater). This approach could conserve water and help minimise pollution by reducing the discharge of nutrients into rivers and oceans.

The effluent (wastewater) often contains valuable nutrients that can enhance soil fertility and promote sustainable agricultural practices.

Reuse and responsible water management practices could play a pivotal role in securing our future against the mounting challenges of water stress. We can pave the way for a more water-secure and sustainable world through concerted efforts at all levels, from governments to communities and businesses.