This Web site is your gateway to information about MassDEP and its multi-faceted efforts to ensure clean air and water, the safe management of toxics and hazards, the recycling of solid and hazardous wastes, the timely cleanup of hazardous waste sites and spills, and the preservation of wetlands and coastal resources. It is also where you can learn about environmental matters in your community, conduct business on-line with MassDEP through our Service Center, and participate directly in our environmental protection work.