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World Water Day 2023

Table of contents

Ultrafiltration (UF) of rainwater with chlorination can produce water for potable purposes supporting SDG 6. Long-term tests demonstrate that the produced water meets the WHO standards. PV powered rainwater ultrafiltration cost ranges from 0.04 to 0.13 US$ m3. The developed technique can be implemented with economic viability even for small buildings. The technique can be a reliable alternative to traditional water supply approaches in remote areas across the world.

This Comment article supports SDGs 3, 6, and 13 by highlighting that Africa has suffered disproportionately from the climate crisis; extreme weather such as severe flooding has damaged the water and food supply, increased food insecurity and malnutrition, and led to loss of cultivated land, shelter, and livestock.

This Article supports SDG 6, focusing on the variation in water insecurity between different sociodemographic groups in low-income and middle-income countries. The authors suggest that indiviudal-level measurements are needed to guide policy interventions that will serve those most in need.

This Article supports SDGs 3 and 6 by demonstrating that polio environmental surveillance by testing wastewater samples is a valuable tool for tracking the distribution of polio and non-polio enteroviruses, and could be instrumental for global poliovirus elimination efforts.

This Article supports SDGs 3 and 6 by demonstrating the safety, tolerability, and immunogenicity of a typhoid conjugate vaccine in Malawian children aged 9 months to 12 years; this paper is relevant to World Water Day since S Typhi is transmitted by the faecal-oral route through ingestion of contaminated food and water, often resulting from inadequate hygiene and sanitation.

This Comment article supports SDGs 3, 6, and 10 by highlighting major disparities in the coverage and quality of water, sanitation, and hygiene (WASH) services for minority ethnic groups in Bangladesh.

Blue energy recovery to increase water sustainability in wastewater treatment plants supporting SDG 6. Sustainable alternatives for water remediation in coastal wastewater treatment plants is discussed as well as the Influence of the main components and variables of a reverse electrodialysis stack.

This Article supports SDGs 3 and 6, focusing on the effects of water, sanitation, and hygiene interventions on childhood diarrhoea in low and middle income countries. Their findings support the higher service levels called for under SDG 6.

This health policy supports SDGs 3 and 6, focusing on the neglected health issue of drowning. The paper discusses ways in which the issue can be framed to align with external priorities, particularly political contexts.

This study supports SDGs 3 and 6 by reporting findings from the first WHO global survey assessing infection prevention and control programme implementation at the facility level, and highlighting key gaps: for example, only 68% (302 of 446) of low-income countries had continuously available water services.

This Article supports SDGs 3, 6, and 13 by showing consistent and positive correlations between cholera seasonality and precipitation and, to a lesser extent, between cholera seasonality and temperature and flooding in sub-Saharan Africa.

Background: An alarming number of public health-care facilities in low-income and middle-income countries lack basic water, sanitation, hygiene (WASH), and waste management services. This study estimates the costs of achieving full coverage of basic WASH and waste services in existing public health facilities in the 46 UN designated least-developed countries (LDCs). Methods: In this modelling study, in-need facilities were quantified by combining published counts of public facilities with estimated basic WASH and waste service coverage.

This Article supports SDGs 3 and 6 by assessing the level of hand hygiene implementation and its drivers in health-care facilities through a global WHO survey; 25% of health-care facilities in low-income and middle-income countries were found to lack basic hygiene services, including access to clean water.

This article presents the 100 most pressing questions regarding water availability and governance.

This Article supports SDGs 3 and 6 by developing estimates of regulated metals in community water systems, which can be used in future studies, and by showing that there are significant sociodemographic inequalities in public water uranium concentrations.

This Review supports SDGs 3 and 6, focusing on the complex ways that multiple factors interact during droughts to influence HIV treatment adherence. The authors suggest that economic and livelihood challenges resulting from food and water insecurity during droughts have the biggest impact on adherence.

This Primer discusses the current status, gaps and guture needs of freshwater monitoring programs, towards preserving ecosystem functioning and our own health.

To address the dual challenges of water scarcity and global climate change mitigation goals, China has committed to carbon neutrality by 2060 combined with strict water use restrictions. Modeling suggests that transitioning to carbon neutrality will potentially reduce industrial water use by a quarter in China.

Results of ultrafiltration (UF) and reverse osmosis (RO) pilot plant on-site tests for wastewater reclamation are reported here with 90% and 65% water recovery achieved for UF and RO stages, respectively. RO achieved high quality requirements for industrial reuse supporting SDG 6.

Background: WHO promotes the SAFE strategy for the elimination of trachoma as a public health programme, which promotes surgery for trichiasis (ie, the S component), antibiotics to clear the ocular strains of chlamydia that cause trachoma (the A component), facial cleanliness to prevent transmission of secretions (the F component), and environmental improvements to provide water for washing and sanitation facilities (the E component). However, little evidence is available from randomised trials to support the efficacy of interventions targeting the F and E components of the strategy.

Over 43 million U.S. residents rely on private unregulated wells for their drinking water, raising public health concerns, particularly in regions like northern New England where widespread groundwater arsenic contamination is now recognized. Children are particularly vulnerable to adverse health effects from arsenic exposure.

Clean water resources are crucial for societies in order to maintain safety as well as social, ecological and economic progress. As the population grows, agricultural, domestic and industrial activities produce large amounts of wastewaters that can be treated and reused in variety of purposes considering circular economy philosophy. This review presents the challenges and future prospects of wastewater treatment using membrane technologies and is related to SDG 6: Clean water and sanitation.

The content concerns models for optimal utilization of groundwater resources

Nuclear desalination is an important non-electric application of nuclear power and heat, having strong interlinkages and alignment with sustainable development, climate change management (both mitigation and adaptation), and water security.

An examination of the challenges involved in water demand forecasting, with a particular focus on the impact of COVID-19 on the performance of various machine learning models designed for this purpose.

In this Commentary, the increasing risk of pharmaceutical pollution to the world's rivers is discussed. To safeguard clean drinking water, crop irrigation, and biodiversity, the authors call for accellerated global collaboration.

Gilbert Houngbo is the chair of UN-Water and president of International Fund for Agricultural Development. In this Q&A, he discusses global progress and remaining challenges to achieving clean water for all.

In this Voices panel, 7 global experts discuss the challenges of wastewater management and what is needed to transition wastewater into useable water.

This Article supports SDGs 3 and 6 by showing that the integration of a health education package for for the promotion of correct hygiene and sanitation practices into the school curriculum is an affordable and scalable approach to respond to the burden of soil-transmitted helminth infection among schoolchildren in the Philippines.

This review focuses on the potential exposure routes, human health impacts, and toxicity response of MPs/NPs on human health, through reviewing the literature on studies conducted in different in vitro and in vivo experiments on organisms, human cells, and the human experimental exposure models.

This paper discussed the development and testing of a gamma radiation dose rate calculation model for the marine environment, and evaluates the potential use for such a model in both short term nuclear emergency response management and emergency response planning.

This paper studied the heavy metal concentrations in the study area had a temporal decreasing trend compared to previous studies, which may be due to the reduction in human activities.

This chapter contributes to SDG 6 by introducing technologies for phosphorus remediation from contaminated water.

This chapter contributes to SDG 6 by providing up-to-date information on nanomaterial potential application in water remediation.

This chapter contributes to SDG 6 by providing up-to-date information on microbial mechanisms for removing metals from contaiminated soils and water.

This chapter contributes to SDG 6 by describing the potential impacts of climate change on water resources.

This chapter contributes to SDG 6 by introducing projects to improve the situation of drought-affected cities by maintaining and saving local water resources.

This chapter contributes to SDG 6 by using satellite-based information to monitor and forecast for sustainable water resource management.

This chapter contributes to SDG 6 and 9 by providing satellite techniques to monitor water storage in the Earth's cycle.

This chapter supports SDG 6 by summarizing the current approaches for evaluating pathogen fate and transport in the environment, their removal during subsurface transport in porous aquifers and the needed infection protection to achieve safe drinking water.

This chapter introduces key concepts of water desalination systems driven by sustainable energy sources, as we look to meet civilization's water needs through sustainable means - supporting SDG 6 (Clean Water and Sanitation) as well as SDG 7 (Clean and Affordable Energy)

This chapter explores case studies of ground water contamination (SDG 6) in West Bengal and solutions for mitigating it via innovative drilling techniques.

This chapter contributes to SDG 6 by describing the various sources and selected contaminants that pollute urban groundwater.

This chapter explores the use of geographical information systems (GIS) and statistical approaches to determine the extent of fluoride contamination in groundwater (SDG 6).

This chapter advances SDG 6 and 9 by identifying and investigating state-of-the-art remediation approaches and technologies that help the disposal of hazardous sewage for sustainable and safe reuse.

This chapter contributes to SDG 6 by introducing technologies for wastewater treatment.

This chapter provides information on the benefits of pumped hydro energy storage as a means of providing consisent renewable energy power generation, offering power network management including load balancing and peak shaving, and grid stabilization with emphasis on frequency and voltage regulation. Additionally, the chapter highlights some of the different pumped hydro energy storage hybrid designs for both off-grid and grid-tied applications while the impact of climate change is discussed.

This chapter contributes to SDG 6 by providing up-to-date information on microbial mechanisms for removing metals from contaiminated soils and water.

This chapter contributes to SDG 6 by introducing the impact of COVID-19 on water and sanitation, explaining Sustainable Development Goal-6 (clean water and sanitation) in the context of the COVID-19 pandemic, and highlighting lessons learned regarding the water and COVID-19.

This chapter contributes to SDG 6 by investigating Iran's water crisis caused by the depletion of water resources and providing technological solutions to adapt to the crisis and achieve a water resources equilibrium.

This chapter contributes to SDG 6 by using radar remote sensing to measure terrestrial water budget elements such as precipitation, soil moisture, and surface water levels.

This content advances SDGs 12 and 13 by promoting responsible water resource consumption in pastoral lands and working with the environment rather than against it to raise livestock. Raising livestock responsibly and sustainably promotes SDG 2 for zero hunger as well.

This important chapter discusses the impact of climate change on water resources, and the measures adopted by various government agencies and NGOs trying to cope with the growing challenges. It advances SDG 13 by pointing out actionable goals and strategies.

This chapter advances SDG 6 and SDG 13 by highlighting the connection between climate change and water resources. It describes some of the most sinificant efforts taken to mitigate climate change.

This Commentary directly addresses the most pressing challenges of World Water Day by tackling the presistence of water-, sanitation- and hygiene-related diseases and what needs to be done to address these challenges.

This Viewpoint supports SDGs 3 and 6, focusing on the rapid spread of Aedes and Anopheles stephensi mosquitoes and the associated transmission of disease, particularly in urban environments

Proposal for a new machine learning-based smart irrigation system, designed to aid the development of more sustainable agricultural practices, saving water and contributing towards better food security.

This Article supports SDGs 3 and 6 by demonstrating that polio environmental surveillance by testing wastewater samples is a valuable tool for tracking the distribution of polio and non-polio enteroviruses, and could be instrumental for global poliovirus elimination efforts.

This Review supports SDGs 3 and 6, focusing on the complex ways that multiple factors interact during droughts to influence HIV treatment adherence. The authors suggest that economic and livelihood challenges resulting from food and water insecurity during droughts have the biggest impact on adherence.