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Colorado Attorney General

Phil Weiser

Colorado Attorney General

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Weiser says State of Colorado will take legal action to protect the state’s waters from weaker federal protections

April 21, 2020 (DENVER, Colo.)— Attorney General Phil Weiser released the following statement regarding the final Waters of the United States rule that the U.S. Environmental Protection Agency and Army Corps of Engineers released today:

“The federal government’s final Waters of the United States rule is too limited and excludes a significant percentage of Colorado’s waters from Clean Water Act protections. The final rule threatens to create unacceptable impacts to the state’s ability to protect our precious state water resources, and, in the absence of extraordinary state efforts to fill the gaps left by the federal government, will harm Colorado’s economy and water quality.

“We are pleased the final rule protects important agriculture exemptions and provides continued assurance that states retain authority and primary responsibility over land and water resources that are important to Colorado. However, the federal government’s decision to remove from federal oversight ephemeral waters, certain intermittent streams, and many wetlands is based on flawed legal reasoning and lacks a scientific basis.

“We are going to take legal action to protect Colorado waters and prevent the harmful aspects of the final rule from taking effect here.”

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Contact: Lawrence Pacheco

Director of Communications

Mobile: (720) 245-4689

lawrence.pacheco@coag.gov

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May 4, 2026 (DENVER) — Attorney General Phil Weiser today joined a coalition of 22 states and the District of Columbia in urging the U.S. Supreme Court to stay a ruling by the U.S. Court of Appeals for the Fifth […]

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Purdue/Sackler $7.4B nationwide opioid settlement goes into effect

May 1, 2026 (DENVER) — Attorney General Phil Weiser today announced that a $7.4 billion settlement reached with Purdue Pharma and its owners, the Sackler family, has become legally effective, capping nearly a decade of work by attorneys general from […]

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Attorney General Phil Weiser urges CFTC to recognize state authority over sports-related prediction markets

April 30, 2026 (DENVER) — Attorney General Phil Weiser today joined a bipartisan coalition of 41 attorneys general in urging federal regulators to reaffirm that jurisdiction over sports-related “event contracts” belongs to the states. “The protection of consumers from irresponsible […]

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Colorado Department of Law
Ralph L. Carr Judicial Building
1300 Broadway, 10th Floor
Denver, CO 80203

(720) 508-6000

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Attorney General Phil Weiser is working to defend Colorado communities against harmful and illegal actions from the federal government.

Learn more: Defending Colorado