; (6) in the 2016 Drinking Water Action Plan of the Environmental Protection Agency, the Administrator recommended that the Government and key water stakeholders strengthen the effectiveness of drinking water health advisories through enhanced collaboration and increased focus on risk management and risk communication approaches; and (7) it is vital that legislators, regulatory officials, public water system owners and operators, scientists, and environmental advocacy groups continue to work to ensure that the public water systems of the United States are among the safest in the world. 3. Definitions In this Act: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Contaminant The term contaminant means any physical, chemical, biological, or radiological substance or matter in water. (3) Contaminant of emerging concern; emerging contaminant The terms contaminant of emerging concern and emerging contaminant mean a contaminant— (A) for which the Administrator has not promulgated a national primary drinking water regulation; and (B) that may have an adverse effect on the health of individuals. (4) Federal research strategy The term Federal research strategy means the interagency Federal research strategy developed under section 4(c)(1)(A)(i). (5) Working Group The term Working Group means the Working Group established under section 4(b)(1). 4. Research and coordination plan for enhanced response on emerging contaminants (a) In general The Administrator shall— (1) review Federal efforts— (A) to identify, monitor, and assist in the development of treatment methods for emerging contaminants; and (B) to assist States in responding to the human health challenges posed by contaminants of emerging concern