Environmental Data Resources (EDR) provides information on businesses, properties and buildings to professionals in the financial, environmental, real estate, corporate, government, and legal sectors, and to other information companies. The company created and maintains the National Environmental Data Information System, or NEDIS, its proprietary aggregate database of environmental records and historical land use information culled from public records and private sources. Over 20 years in the making and updated continually, NEDIS contains 1,400 databases, some of which are proprietary, and more than 3.1 billion records.