The Supreme Court of California held that the state may enter and conduct environmental and geological studies and testing on more than 150 privately owned properties in the Sacramento-San Joaquin…

The D.C. Circuit upheld EPA's decision to invoke its veto authority under CWA §404(c) and withdraw two disposal sites from a CWA permit issued by the U.S. Army Corps of Engineers for a…

The Fourth Circuit upheld the U.S. Army Corps of Engineers' issuance of a dredge and fill permit to a surface coal mine. Environmental groups challenged the adequacy of the Corps'…

A district court held that citizen groups may go forward with their SDWA lawsuit against various Flint, Michigan, officials for mishandling the city's water treatment and distribution system…

The Ninth Circuit held that Washington state's management of barrier culverts, which allow streams to flow underneath roads, violated various Native American treaties from the 1850s and…

A district court, on motions for summary judgment, held that the owner of a farm violated the CWA when he allowed wetlands on his property to be tilled. The record shows that the farm discharged a…

A district court held that West Virginia law preempts a county's ban on wastewater disposal wells. The ordinance effectively outlaws horizontal drilling anywhere in the county. It establishes…

The Vermont Supreme Court affirmed a lower court decision dismissing as untimely the state's claims against a number of companies for generalized injury to state waters due to groundwater…

The Texas Supreme Court held that the common-law "accommodation doctrine," which gives an oil-and-gas lessee an implied right to use the land as reasonably necessary to produce and…

A district court stayed further proceedings in litigation challenging EPA's "waters of the United States" (WOTUS) rule pending any further decision by the U.S. Court of Appeals for…