Aging lead-pipe drinking water systems, along with the public health measures implemented to reduce their risks, are reshaping the chemistry and health of nearby urban streams. New research from ...

Over the past six years, the streams in the Chesapeake Bay watershed — which covers 64,000 square miles — has become cleaner. According to the latest data from the Interstate Commission on the Potomac ...

Clear mountain streams often appear pristine, flowing through remote landscapes far from cities or industry. Many outdoor travelers assume such water is naturally safe, shaped only by snowmelt and ...