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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 here.


Latest News

ECOS Comments on EPA National Enforcement Initiatives

The Letter can be accessed here.

(October 14, 2015)

ECOS President Martha Rudolph's Letter to Membership

The Letter can be accessed here.

(September 25, 2015)

EPA Letter to ECOS on NPDES Rule

The Letter can be accessed here.

(September 24, 2015)

NCSL & ECOS: TSCA Letter to Senate

The Letter can be accessed here.

(September 23, 2015)

ECOS Testimony on Federal Facility Cleanup under CERCLA

The Testimony can be accessed here.

(September 16, 2015)

Press Release by ECOS on Election of New Officers

The Press Release can be accessed here.

(September 10, 2015)

Letter to Senate and House of Representatives on Hydropower Regulatory Modernization Act of 2015

The Letter can be accessed here.

(September 8, 2015)

Employment Opportunity: Project Associate Position At ECOS

More Information can be accessed here.

(September 10, 2015)

EPA ORD Holds Tools Café for States

The event featured a sampling of tools from EPA available for states. Information on these tools is available here.

(September 4, 2015)

EPA Responds to ERIS 2014 States' Research Needs Survey

U.S. EPA has provided a comprehensive response to the ERIS 2014 States' Research Needs Survey through a set of documents available here.

(August 27, 2015)

Press Release by ECOS Launching e-MATRIX to Promote Methane Reduction from Oil and Gas

The press release can be accessed here.

(August 18, 2015)

Map of CPP Final Rule-States Whose 2030 Goals Are More Stringent

The map can be accessed here.

(August 4, 2015)

Statement by ECOS Regarding U.S. EPA’s Release of the Clean Power Plan and Related Action

The statement can be accessed here.

(August 3, 2015)

Press Release by DOJ Regarding Appointment of Andrea Burlowe as Counselor for State and Local Matters

The press release can be accessed here.

(July 20, 2015)


April 11, 2016 - April 13, 2016
2016 ECOS Spring Meeting
Nashville, Tennessee

September 25, 2016 - September 27, 2016
2016 ECOS Fall Meeting
Wheeling, West Virginia


View ECOS Calendar - click here.

Copies of ECOS' regularly-published, topic-specific Green Reports can be accessed here.


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.


A state-led coalition of state and federal regulators, industry, and stakeholders working together to achieve regulatory acceptance of environmental technologies.

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. Visit to learn more.

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