This report provides a synopsis of the availability, performance, and cost of eight technologies for treatment of mercury in soil, waste, and water. The report also describes research under way on innovative methods to treat mercury contamination. The reports intended audience includes hazardous waste site managers; those generating or treating mercury-contaminated waste and wastewater; regulators; and the interested public. There is a need for cost-effective mercury treatment. Historical use of mercury has resulted in soil and groundwater contamination that may require remediation. Mercury contamination is difficult to treat and may pose a risk to human health and the environment. In addition, some industrial wastes and wastewaters currently being produced require treatment to remove or immobilize mercury. This report is intended to be used as a screening tool for mercury treatment technologies. It describes the theory, design, and operation of the technologies; provides information on commercial availability and use; and includes data on performance and cost, where available. As a technology overview document, the information can serve as a starting point to identify options for mercury treatment.