Researchers tested spring, groundwater, and purified bottled waters against local tap to see how treatment shapes the ...

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” ...

Over the next several weeks, the water coming out of Triangle residents' faucets may look, smell or taste differently. A water disinfection process begins Thursday, Feb. 27, and will continue through ...

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 ...