The Safe Drinking Water Act is a federal law that sets quality standards for the systems that provide Americans with drinking water. The Environmental Protection Agency uses a weighted point ...

While it is generally fine to consume tap water in the United States, there are still millions of Americans who suffer from a lack of safe drinking water. The situation in Flint, Michigan ...

This story appears in the March 2019 issue of National Geographic magazine. When my young daughter says she’s thirsty, I take for granted that the water from our kitchen tap is clean and safe.