The Superfund is part of which US government agency and why is the Superfund important?

The Superfund law authorized the Environmental Protection Agency (EPA) as the regulatory agency for this process. The Superfund, itself, created the Agency for Toxic Substances and Disease Registry. The Superfund is important because it is an attempt, nationally, to clean up the releases of hazardous materials into the public environment. It gives the EPA the jurisdiction to force companies to clean up their messes, and it gives them the ability to sue those who don't comply.