Several decades ago, acid rain in the Adirondacks helped direct the nation’s attention to new kinds of air pollution.
Despite the local environmental protections here, acids were being carried from coal-fired power plants elsewhere in the country by the atmosphere and falling into Adirondack lakes and streams, killing off fish. The regulatory boundary protecting the park’s forests and wetlands from development and logging weren’t going to stop that.
A national problem needed a national solution. So, in 1990, Congress updated the Clean Air Act to crack down on polluters.
A recent paper, authored by researchers at the University of Maryland, argues that salt pollution, including pollution from road salt, may be so ubiquitous that it now needs such a national solution. “Ultimately,” the paper says, “there may be a need for regulations similar to the 1990 Clean Air Act Amendments, which were enacted to address pollution from acid rain.”