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Share of the population without access to an improved water source, 2020. 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.
Out of all the water on Earth, saline water in oceans, seas and saline groundwater make up about 97% of it. Only 2.5–2.75% is fresh water, including 1.75–2% frozen in glaciers, ice and snow, 0.5–0.75% as fresh groundwater and soil moisture, and less than 0.01% of it as surface water in lakes, swamps and rivers.
This list of water resources management by country provides information on the status of water resource management at a national level. List by country:
Water resources are natural resources of water that are potentially useful for humans, for example as a source of drinking water supply or irrigation water. These resources can be either freshwater from natural sources, or water produced artificially from other sources, such as from reclaimed water or desalinated water (). 97% of the water on Earth is salt water and only three percent is fresh ...
Source of drinking water for five million people. [177] Third largest river by discharge volume in the United States and the largest tributary by volume of the north–south flowing Mississippi River, which divides the eastern from western United States. [178] Listed among America's Most Endangered Rivers of 2023. [179]
Potential sources of well water contamination. Approximately 13 million households in the US get their drinking water from privately owned wells. [104] Private wells are not regulated by EPA. [18] In general, private well owners are responsible for testing their wells, and some states provide guidance and technical assistance on testing. [105 ...
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