About ECOS

The Environmental Council of the States (ECOS) is the national non-profit, non-partisan association of state and territorial environmental agency leaders. The purpose of ECOS is to improve the capability of state environmental agencies and their leaders to protect and improve human health and the environment of the United States of America. Learn more about us.

Our Members

Our Affiliates


The Environmental Research Institute of the States is a 501(c)3 organization that focuses on educational and research issues. Click on the link below to find out more.

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The Interstate Technology and Regulatory Council (ITRC) is a state-led coalition of state and federal regulators, industry, and stakeholders working together to achieve regulatory acceptance of environmental technologies.

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The Exchange Network

The Exchange Network is a partnership among States, Territories, Tribes, and the U.S. Environmental Protection Agency that is improving and expanding the exchange of environmental information.

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E-Enterprise for the Environment (E-Enterprise) is a transformative 21st-century strategy to modernize how government agencies deliver environmental protection.

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