The answer: L.A. does pump and use local groundwater — but other water sources are important for replenishing the supply. Until the first half of the 20th century, some areas in Los Angeles ...

Dear EarthTalk What is currently being done in the U.S. to ensure the wise use and safety of our nation’s groundwater? – Kevin Orr, Baton Rouge, La. Keeping fresh water safe and abundan… ...

Groundwater depletion threatens water sources of the American food system, and the Central Valley (CV) is one of the most productive agricultural regions in the world and a keystone in the American ...

Though federal regulations set the limit at 10,000 mg/L, companies are routinely granted exemptions if they can demonstrate that the groundwater is not expected to be used as a source of drinking ...

Groundwater's quantity is far from the only concern, however; its quality is also under constant assault from a variety of sources. Natural poisoning of groundwater has long been known to occur ...

“What makes this study interesting is the idea that methylmercury is forming in coastal groundwater,” said Cynthia Gilmour, a microbial ecologist and senior scientist at the Smithsonian Environmental ...

"Groundwater is pretty stable, and tends to approach the mean annual temperature of its region," says Lane. For instance, in New England, where he is based, groundwater is around 55˚F.

The San Jacinto River Authority has identified three viable above-ground water options to supplement the county’s underground water supply in the future. In addition to its own one-third water ...

CARLSBAD, N.M. — Descending from the bright sunshine down into another world comes easily at Carlsbad Caverns. "This is one of the greatest caves in the world,” said Rod Horrocks, chief of ...

(Virtual Showroom): Groundwater has played and will also play a major role in the sustainability of life on earth. Groundwater makes up approximately 99% of fresh water on earth.

Groundwater sources face threats of pollution, droughts, and increasing demand. When people think about caves, they might think about the animals that can be found in them, like bats, but what ...