Slow sand filtration remains a cornerstone of sustainable water treatment, harnessing both physical and biological processes to improve water quality. Central to this method is the development of a ...

Every other Friday, the Outside/In team answers one listener question about the natural world. This week, Jeannie from Burlington, Vt., asked us about wastewater treatment plants. She said she's ...

Today's filtration technologies do a wonderful job of producing potable water, but the spread of plastic waste throughout the environment means there are new threats to contend with. A new study has ...

Lead, bacteria and PFAS are among the contaminants cropping up in drinking water. Credit...Thea Traff for The New York Times Supported by By Dana G. Smith Over the past few years, water safety crises ...