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About EPA

About the National Risk Management Research Laboratory (NRMRL)

What We Do

As EPA’s premiere laboratory for risk management research, NRMRL focuses on environmental problem-solving. Recognized as a national leader in scientific and engineering expertise and capability, NRMRL directly supports efforts to improve air quality, manage chemical risks, clean up hazardous waste sites, and protect America's water. Managing environmental risk means determining what environmental risks exist and how to manage those risk in a way best suited to protect human health and the environment. NRMRL’s mission is to advance scientific and engineering solutions to manage current and future environmental risk.


Cynthia Sonich-Mullin, Director

NRMRL includes:

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Air and Energy Management Division (AEMD)

Location: Research Triangle Park, North Carolina

Acting Director: Brian Gullett

  • Phone: 919-541-1534

What We Do: AEMD is responsible for research, development, and evaluation of air pollution control technologies and methods to characterize and mitigate emissions of air pollutants. AEMD performs research on measurement methods, combustion modification techniques, and other pollution control techniques to understand their capacity to reduce emissions such as fine particulates, toxic metals, and ozone precursors.

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Groundwater, Watershed, and Ecosystem Restoration Division (GWERD)

Location: Ada, Oklahoma

Acting Director: Ann Keeley

  • Phone: 580-436-8890

What We Do: GWERD conducts research and engages in technical assistance and technology transfer on the chemical, physical, and biological structure and processes of the subsurface environment, the biogeochemical interactions in that environment, and alterations to other environmental media. GWERD research provides the scientific basis for tools, strategies, and technologies to protect and restore ground and surface water quality and ecosystem functions.

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Land and Materials Management Division (LMMD)

Location: Cincinnati, Ohio

Acting Director: Dennis Timberlake

  • Phone: 513-569-7547

What We Do: LMMD conducts research to provide technologies, guidance, and tools that can be used to manage land resources in a more sustainable and productive manner. LMMD research produces results that enhance and improve our ability to manage and remediate land, advance a more sustainable use of natural and engineered resources, and provide system-based decision making approaches that better protect human and environmental health..

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Water Systems Division (WSD)

Locations: Cincinnati, Ohio, and Edison, New Jersey

Acting Director: Sandhya Parshionikar

  • Phone: 513-569-7123

What We Do: WSD research supports EPA's systematic evaluations of the primary and secondary regulations for drinking water and pollution control programs for water quality. WSD develops and evaluates strategies and technologies to reduce the risks associated with chemical and microbial contaminants in water to help ensure safe, sustainable, and resilient water supplies.

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