Toxic ingredients turning up in water, house dust, researchers say
Washington state has become the first in the nation to ban toxic asphalt sealants made from cancer-causing industrial waste that have been spread over vast swaths of the nation’s cities and suburbs. Democratic Gov. Christine Gregoire signed the measure today, making Washington the largest government to ban or restrict coal tar asphalt sealants. Last month, Prior Lake, Minn., joined a growing number of local governments to ban them. The Washington state legislation and Doggett’s drive for a nationwide ban flowed from studies by the U.S. Geological Survey, which showed that components of the toxic sealants are increasing in many waterways, while levels of most pollutants are declining.