The Environmental Contaminants Data Management System (ECDMS) is managed by personnel at the Analytical Control Facility (ACF) . ECDMS is a Web based application that is now part of the Environmental Conservation Online System (ECOS) suite of applications used by the FWS. ECDMS is used to store biological, geographic, chemical analysis, and administrative data from samples collected from around the country to assess environmental pollution. The system allows Environmental Contaminants Biologists and other U.S. Fish and Wildlife personnel and other Department of the Interior Bureaus to both store and access contaminant data on fish and wildlife and their supporting habitats. In addition, ECDMS provides an array of tools, processes, and features which link the biologist with the administrators, quality assurance officers, and laboratories that perform the chemical analyses.

ECDMS has been operational since March 1991. As of June 2008, the ECDMS database contains sample and analytical results information for over 102,000 samples, and is still growing. The data represents over 810 different species and 980 different analytes. Samples have been submitted from all 50 states, including the District of Columbia and Puerto Rico. It also contains samples and results from 287 FWS refuges.