**1. Introduction**

The United Nations (UN) established the Sustainable Development Goals (SDGs) to guide its member states' agendas and political policies through the next 15 years [1]. Among the 17 goals, SDG-6, *Ensure Access to Water and Sanitation for All*, requires improving water and sanitation management for all people, having urged every nation in the world to take the necessary actions to ensure its people's basic human right: gaining access to safe drinking water. Since the 21st century, with the acceleration of global integration, the population increase, continuous climate change, and rapid development of international trade, some public health events, including sudden infectious and foodborne/waterborne diseases, have occurred frequently, aggravating the complexity of health problems. For example, starting in late 2019, the COVID-19 pandemic has caused over six million deaths worldwide, still affecting daily life to this day. In order to find solutions to these problems, the concept of "One Health" was introduced, practiced, and applied in increasingly more international organizations and countries in the process of health governance [2,3].

Groundwater is one of the most valuable natural resources supporting the survival of human beings and the development of human societies [4–6]. However, serious groundwater pollution can have significant negative impacts on human health [7–11]. Contaminants in groundwater generally have two sources, one being of geogenic origin and the other human activities [12]. To reflect the most recent progress in groundwater quality research and associated public health issues, the Special Issue of the journal *Water,* entitled *Groundwater Quality and Public Health,* was developed. Its aim is to attempt to provide a platform for researchers, policy makers, and engineers to share their latest thoughts and findings on this

**Citation:** Li, P.; Wu, J.; Shukla, S. Achieving the One Health Goal: Highlighting Groundwater Quality and Public Health. *Water* **2022**, *14*, 3540. https://doi.org/10.3390/ w14213540

Received: 17 October 2022 Accepted: 1 November 2022 Published: 4 November 2022

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<sup>1</sup> School of Water and Environment, Chang'an University, No. 126 Yanta Road, Xi'an 710054, China

topic, as well as novel methods dealing with groundwater pollution. The papers published in this Special Issue include the latest research results by world renowned researchers, whose findings could benefit researchers, engineers, policy makers, and government officials in future groundwater quality research and policy making.
