Original sentence: A landfill and two wastewater lagoons in Ledyard, CT near the Pfizer plant in Groton, Connecticut, are a source of groundwater polution in the area.According to the Connnecticut Department of Environmnetal Protection (CT DEP), the Pfizer site is active under the CT DEP Site Remediation program.In June 2002, a chemical explosion at the Groton plant injured seven people and caused the evacuation of over 100 homes in the surrounding area.Pfizer has provided funding to the Competitive Enterprise Institute
Edited sentence: According to the EPA, Pfizer is a main threat to the health of the residents and the environment of the New London area because of its toxic emissions into the air and water.In addition, in June 2002, Pfizer was responsible for a chemical explosion that injured seven people and caused the evacuation of over 100 homes in the surrounding area.Pfizer has also provided funding to the controversial Competitive Enterprise Institute who have been criticized for releasing misleading advertisements claiming that global warming is not a problem.The EPA has cited Pfizer on multiple occasions for illegal discharges into the Thames River and for hazardous waste violations on site.Their  plant in Groton, Connecticut, is home to a  landfill and two wastewater lagoons, adding to pollution in the area