Pictured above: Chesapeake Bay Foundation participated in Winter Salt Week and studied 17 sites last winter. Last January in the Harrisburg area, they found chloride levels as high as 433 milligrams per liter. National research shows chloride levels in waterways have increased nearly 40% in the last 50 years. Photo courtesy of Chesapeake Bay Foundation
Pennsylvania crews are still clearing roads after the latest winter storm, and experts warn that the heavy use of road salt is harmful to the environment.
PennDOT maintains about 40,000 miles of roadway and more than 25,000 bridges — and the agency spreads nearly 600,000 tons of salt in a typical season…