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Clean Water Act (CWA)

Puget Soundkeeper Alliance v. Wheeler

A district court vacated nationwide the Applicability Date Rule, which suspended the effect of the Clean Water Rule until February 2020 and required agencies in the interim to apply the pre-Clean Water Rule definition of "waters of the...

Center for Biological Diversity v. Wheeler

A district court dismissed a challenge to EPA's amendment to the 2015 Effluent Limitations Guidelines Rule, which established new limits and standards for various types of waste streams discharged by steam electric power plants....

Columbia Riverkeeper v. Pruitt

A district court ordered EPA to issue a temperature total maximum daily load (TMDL) under the CWA for the Columbia and Snake Rivers, which are native habitat for endangered and threatened salmon and steelhead populations. An...

Kentucky Waterways Alliance v. Kentucky Utilities Company

The Sixth Circuit held that seepage from a coal-fired power plant that reached a nearby lake violated RCRA, but not the CWA. Environmental groups argued that the chemicals being stored in coal ash ponds contaminated the surrounding...

Tennessee Clean Water Network v. Tennessee Valley Authority

The Sixth Circuit held that seepage from a coal-fired power plant adjacent to the Cumberland River did not violate the CWA. Environmental groups argued that the plant violated the CWA by leaking pollutants without a permit from its...

North Dakota v. U.S. Environmental Protection Agency

A North Dakota district court enjoined in Iowa the 2015 Clean Water Rule, which clarifies the definition of "waters of the United States" that are protected under the CWA. The governor of Iowa sought an order from the court expressly...

Texas v. United States Environmental Protection Agency

A district court granted Texas' motion to preliminarily enjoin the 2015 Clean Water Rule in Louisiana, Mississippi, and Texas. The state argued that implementing the rule would require it to spend significant time and taxpayer resources...

Sierra Club v. Virginia Electric & Power Company

The Fourth Circuit held that seepage from a coal-fired power plant did not violate §301 of the CWA, which prohibits the unauthorized discharge of any pollutant into navigable waters. An environmental group argued that the plant's...

Delaware Riverkeeper Network v. Pennsylvania Department of Environmental Protection

The Third Circuit denied review of the Pennsylvania Department of Environmental Protection's decision to grant a CWA §401 certification for a natural gas pipeline project. Environmental groups argued that the department acted...

South Carolina Coastal Conservation League v. Pruitt

A district court ruled in favor of environmental groups' challenge EPA's rule suspending the 2015 Waters of the United States Rule (WOTUS Rule), and enjoined the suspension rule nationwide. The groups argued that the suspension rule...