Acid Mine Drainage

Noah Brode / 90.5 WESA

There are thousands of abandoned coal mines dotting the landscape of Pennsylvania, and many of them leak water tainted with toxic metals like iron and manganese, which seeps into streams and groundwater.

 

It’s been a long, expensive process for the state to clean up the acid mine drainage. But state environmental officials now say an alternative method of remediation -- constructed wetlands -- could remove iron and manganese from mine drainage at a much lower cost.