Harnessing Water Reuse Technologies to Support Sustainable Development

Аннотация

Water has always been the thread holding societies together yet only about 0.5 % of Earth’s water COPYRIGHT is accessible as fresh water. Climate change is making © 2025 Original content from this work may be used under the terms of the creative commons attributes 4.0 License. the water cycle more volatile, extreme droughts and floods are increasing. According to the United Nations World Water Development Report 2024, 2.2 billion people still lack safely managed drinking water, 3.5 billion lack safely managed sanitation and roughly half of the global population faces severe water scarcity for at least part of the year (Nations, 2024). In countries with “extremely high” water stress, water withdrawals exceed 80 % of annual renewable supplies (Nations, 2024). In Uzbekistan, total renewable water resources average 48.87 billion m³/year, of which 84 % comes from surface water and most of it flows from upstream countries. Water withdrawals reach 1527.6 m³ per capita per year (≈49.95 billion m³/year) and 80 % of surface water inflows originate outside the country (Bank, 2024). At the same time, vehicle ownership is soaring, by January 2024 more than 4 million vehicles were registered, a 23 % increase in two years and about 98 cars per 1 000 people (Agency, 2024). This growth fuels demand for carwash services that consume hundreds of liters of potable water per vehicle and generate wastewater rich in surfactants, oils, solids, nutrients and microbes. The article reviews global water scarcity, Uzbekistan’s water challenges, pollution from Carwash stations and available water reuse technologies. This article reflects on global water resource issues, zooming in on the case of Uzbekistan, where the rapid growth in the number of vehicles brings new pressures. As more and more cars appear on the roads, so does the demand for water to wash them and with it, a growing stream of polluted wastewater. The article explores just how serious this European International Journal of Multidisciplinary Research 23 https://eipublication.com/index.php/eijmrms and Management Studies European International Journal of Multidisciplinary Research and Management Studies pollution can be, and how modern treatment humanity suffer severe water scarcity during at least technologies that allow for the reuse of carwash one month each year, and 3.2 billion inhabitants of effluents might play a crucial role. Not just in saving agricultural regions face high to very high-water fresh water, but in supporting broader goals of shortages (Water, 2021-2024). Droughts have affected environmental protection and sustainable over 1.4 billion people between 2002 and 2021, causing development. tens of thousands of deaths (Nations, 2024). These statistics hint at the fragility of a system that is often taken for granted. Keywords: Water reuse, Water scarcity, Sustainable Water scarcity often goes hand in hand with development, Carwash wastewater, Wastewater deteriorating quality. In lower income countries, treatment insufficient wastewater treatment leads to polluted rivers and groundwater; in higher income regions, Introduction: Water security is more than just having agricultural runoff with fertilizers and pesticides enough water, it underpins health, food, energy, dominates (Nations, 2024). Emerging contaminants ecosystems and social stability. Research in such as pharmaceuticals, hormones and surfactants are environmental engineering shows that the elegance of being detected more widely, and climate change is natural water cycles contrasts with concerns about the expected to exacerbate many forms of pollution by collective misuse of finite resources. Only a tiny fraction raising water temperatures and causing more frequent of the planet’s water is usable fresh water, yet societies flooding. The World Water Development Report often treat it as though it were limitless. Climate change emphasizes that water quality degradation can is intensifying the hydrological cycle and making rainfall (Hashim, N.H., Zayadi, N, 2016) compromise ecosystem patterns unpredictable (Nations, 2024). The UN World health and contribute to antimicrobial resistance Water Development Report 2024 warns that half the (Nations, 2024). global population already experiences serious water Looking ahead, the global water cycle will likely become scarcity for at least part of the year and that one even more erratic. Rising temperatures increase quarter of people live in countries withdrawing over 80 evaporation and alter precipitation patterns, causing % of their renewable supplies (Water, 2021-2024). more intense droughts in some regions and heavier These numbers underscore the urgency of addressing downpours in others (Nations, 2024). Without major water scarcity for future generations. In Uzbekistan, efficiency gains and reuse, global water demand may water scarcity is evident; rivers depend heavily on flows exceed sustainable supply by midcentury. The UN from upstream neighbors and deser