If you live in the District or Northern Virginia, your water might start to smell funny on Monday. That’s because of an annual change to the water purification process — a sort of “spring cleaning” ...

Researchers tested spring, groundwater, and purified bottled waters against local tap to see how treatment shapes the byproducts that emerge — and the differences were striking.

Each year, counties across North Carolina conduct a routine water disinfection changeover to clean their pipes. Drinking water remains safe to drink throughout the process.

Water is essential to nearly every function in the human body, yet not all water is created equal. From tap to filtered to distilled, the choices can feel overwhelming, but spring water continues to ...

In the U.S., tap water is generally very safe, highly regulated, and far more affordable and eco-friendly than bottled water—though quality can vary by location and plumbing. Bottled water is also ...