San Francisco argued that Clean Water Act permits should function like recipes that restrict specific ingredients in a dish, rather than telling cooks not to make the dish too salty.

Raw water may not be as safe as it looks. Like raw milk, untreated water comes with dubious health claims and high risks.

One of the most liberal US cities is offering the Supreme Court a chance to further restrict federal regulatory power.

Hard water might dry out your hair and skin − but having hard water isn’t necessarily a bad thing.

Water is everywhere, but freshwater supplies are limited on many Caribbean islands. Rising demand and climate change are worsening water shortages for the people who live here.

Water shortages are one of the greatest problems created by a warming world. A decentralized water system is a compelling counterargument to the notion that bigger is better.

As the war between Hamas and Israel grinds forward, two experts explain how Israelis and Palestinians have cooperated to tackle their region’s water challenges.

A heat wave that pushed California’s power grid to the limit, and the water system failure in Jackson, Mississippi, are just two examples.

A heat wave that pushed California’s power grid to the limit, and the water system failure in Jackson, Mississippi, are just two examples.

High levels of lead were unexpectedly found in 14 UK schools’ drinking water: so how much do we really know about what’s in our pipes?