Ecology and Environment, Inc. (E & E) is a recognized global leader in environmental management.

We have the depth of knowledge, breadth of experience, and multidisciplinary resources to provide clients with smart, innovative solutions to a full range of environmental problems.

Employing nearly 1,000 respected experts in 85 engineering and scientific disciplines, E & E has offices in 50 locations around the globe. Since 1970, we have completed over 50,000 projects in 122 different countries, in nearly every ecosystem on the planet.

Ecology and Environment, Inc.’s family of subsidiaries includes firms located worldwide with expertise in environmental consulting. Our subsidiary companies specialize in the assessment and mitigation of complex environmental and human health issues as they relate to environmental challenges around the globe.

ecology and environment do brasil ltda.
ECSI, LLC
Gestion Ambiental Consultores, S.A.
Gustavson Associates, LLC
Lowham Walsh, LLC
Walsh Ecuador
Walsh Peru, S.A.

The depth of our international experience, which is brought by E & E’s subsidiaries and the multitude of government and private-sector relationships that we have established throughout the world, provides the resources and best practices necessary to resolve issues quickly and complete projects on budget and within the allotted timeframe. In cooperation with our subsidiaries, affiliates, and partners, we implement environmentally sustainable practices to provide innovative and effective solutions to environmental issues in the highest quality, most professional manner.