The Environmental Protection Agency is launching a study on the water quality impacts of large animal feeding operations before deciding whether to tighten rules for them. In a plan released Friday ...

Hydraulic fracturing can contaminate drinking water but has not caused “widespread” impacts, U.S. EPA found in a highly anticipated study released today. Hydraulic fracturing can contaminate drinking ...

Emissions of climate-warming methane from U.S. oil and natural gas production are significantly higher than EPA estimates, according to new research. Emissions of climate-warming methane from U.S. oil ...

The Portland Water Bureau is working to finish a study by next year into how corrosive water affects the region’s lead problem. But even under its proposed faster timeline, major changes wouldn’t ...