List of countries by access to clean water

Global access to clean water is a significant global challenge that affects the health, well-being, and development of people worldwide. While progress has been made in recent years, millions of people still lack access to safe and clean drinking water sources.

According to the World Health Organization (WHO) and UNICEF, as of 2020, approximately two billion people globally do not have access to safely managed drinking water. This lack of access leads to various consequences, including increased vulnerability to waterborne diseases, reduced educational opportunities, gender inequalities, and economic burdens.

Ranking by access to improved water source
An improved water source, as defined by the World Health Organization (WHO), refers to a drinking water source that provides adequate and safe water for human consumption. Examples of improved water sources include piped water connections, protected wells, boreholes with hand pumps, packaged or delivered water and rainwater collection systems with appropriate treatment.

Ranking by access to safe drinking water
List of countries by share of population with access to safe drinking water. Safe drinking water is water from an improved water source which is reliable and free from contamination.