Abstract
As projections highlight that half of the global population will be living in regions facing severe water scarcity by 2050, sustainable water management policies and practices are more imperative than ever. Following the Sustainable Development Goals for equitable water access and prudent use of natural resources, emerging digital technologies may foster efficient monitoring, control, optimization, and forecasting of freshwater consumption and pollution. Indicatively, the use of sensors, Internet of Things, machine learning, and big data analytics has been catalyzing smart water management. With two-thirds of the global population to be living in urban areas by 2050, this research focuses on the impact of digitization on sustainable urban water management. More specifically, existing scientific literature studies were explored for providing meaningful insights on smart water technologies implemented in urban contexts, emphasizing supply and distribution networks. The review analysis outcomes were classified according to three main pillars identified: (i) level of analysis (i.e., municipal or residential/industrial); (ii) technology used (e.g., sensors, algorithms); and (iii) research scope/focus (e.g., monitoring, optimization), with the use of a systematic approach. Overall, this study is expected to act as a methodological tool and guiding map of the most pertinent state-of-the-art research efforts to integrate digitalization in the field of water stewardship and improve urban sustainability.
Highlights
Freshwater resources have been depleting at an alarming rate due to the growing world population, climate change, and increasing industrialization [1,2]
Another 50% (10) of the studies develop algorithms, such as machine learning, to support smart water management in urban settings, confirming that machine learning has emerged as a crucial digital technology in engineered water system applications [62]
As water scarcity has been emerging as a critical environmental challenge, while urbanization has been accelerating, efficient water management in urban areas while urbanization has been accelerating, efficient water management in urban areas bebecomes of vital importance to ensure freshwater sustainability and security [18,64]
Summary
Freshwater resources have been depleting at an alarming rate due to the growing world population, climate change, and increasing industrialization [1,2]. Researchers predict that 52% of the world’s population in 2050 (9.7 billion people forecasted) will be living in water-stressed or scarce regions [3]. In this light, health, environmental, and social concerns necessitate the design and implementation of sustainable water management policies [4,5,6]. Sustainable actions, policies, and technologies towards urban water stewardship, at municipal and/or residential/industrial levels, have been emerging as imperative [13,14,15]
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