National Priorities List

The National Priorities List (NPL) is a list maintained by the U.S. Environmental Protection Agency (EPA) that identifies sites contaminated with hazardous substances and pollutants, which require further investigation and cleanup. The NPL helps prioritize federal cleanup funds and actions to address environmental and public health risks at these locations. Sites are added to the NPL based on factors such as the severity of contamination and potential exposure risk to people and the environment. Being on the NPL means a site is recognized as a significant environmental concern that needs remediation.