The Environmental Response Laboratory Network (ERLN) is managed by EPA.  The ERLN consists of Federal, State, and commercial laboratories that focus on responding quickly to an environmental chemical, biological, or radiological terrorist attack as well as natural disasters affecting human health and the environment.  ERLN presently has 130 laboratories.  The ERLN works in conjunction with the Centers for Disease Control and Prevention (CDC), USDA, the Food and Drug Administration (FDA), DoD, and the Federal Bureau of Investigation (FBI) during an incident.  The ERLN provides analytical support for characterizing the extent and degree of contamination in environmental media during response and remediation activities.  The ERLN also has the primary role in the analysis of drinking water and wastewater.  In October 2009, the ERLN initiated its Phase Two rollout, which included additional public and private sector laboratories. For more information on ERLN, please visit: https://www.epa.gov/emergency-response/environmental-response-laboratory-network