The overall releases of pollutants into the Connecticut environment decreased from 2009 to 2010, according to the U.S. Environmental Protection Agency.
In Connecticut, 320 facilities in 2010 reported releasing 2.7 million pounds of pollutants, 47 percent into the air. In 2009, toxic releases totaled 3.3 million pounds.
The top Connecticut pollutants were nitrate compounds, dichloromethane, copper compounds, ammonia and zinc compounds.
According to EPA, the Connecticut facilities that reported the largest release of toxic chemicals were AES Thames LLC of Uncasville; Cytec Industries, Inc. in Wallingford; Tyco Healthcare Group Surgical Division in North Haven; GBC Metals LLC in Waterbury; and Summit Corp. of American in Thomaston.
The state bucked the national trend, where toxic chemical releases increased 16 percent to 3.93 billion pounds in 2010.
