A district court upheld the U.S. Department of Homeland Security's (DHS') decision to waive the legal requirements of NEPA, ESA, and CZMA for two border wall construction projects in San…

The U.S. Supreme Court, in an unsigned judgment and decree, ordered Wyoming to pay Montana $20,340 in damages, plus $67,270.87 in costs, for reducing the amount of water available in the Tongue…

The Arizona Court of Appeals held that a tribe may proceed with its nuisance claim against a ski resort for its use of reclaimed wastewater to make artificial snow. In 2002, the ski resort…

The Ninth Circuit held that Maui County is liable for illegally discharging treated wastewater that seeped through groundwater into the Pacific Ocean. The County owns and operates four wells at…

The Michigan Court of Appeals held that a class action case involving the Flint water crisis can proceed. Citizens of Flint formed a class and sued Michigan officials for their "deliberate…

The First Circuit held that stormwater running off parking lots and other paved surfaces at Harvard, MIT, and other Boston-area universities will remain unregulated even though it may be polluting…

The California Supreme Court held that the charges a California city must pay to a local water district for groundwater conservation activities do not require voter or property owner approval. By…

The Ninth Circuit upheld a lower court's dismissal of a tribe's NEPA challenge to a DOI guidance that did not consider its interest when allocating the water rights of the Colorado River…

The Ninth Circuit upheld the criminal conviction of a Montana resident for violations of the CWA. The resident was sentenced to 18 months in prison and had to pay a $130,000 fine for digging ponds…

A district court held that a water pollution case against carpet manufacturers belonged in state court as complete diversity did not exist, rejecting the carpet manufacturers' claim of…