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Declining levels at the second-largest reservoir in the U.S. have spurred officials in Colorado, Utah, Wyoming, and New Mexico to search for ways to prop it up.

Understanding the springs is important because about a quarter of the world’s population relies on water that comes from karst systems.

Over the last couple years, Greeley's leaders have focused their energy on testing and developing an underground water supply to make that growth possible. The Terry Ranch project, estimated to cost upwards of $318 million to fully build out, would give the city access to an untapped water source — a rarity on the fast-growing, water-tight Front Range.

The city of Fort Collins has lifted its mandatory outdoor water restrictions due to maintenance work on Horsetooth Reservoir and the risk of water quality issues from wildfires.

2020 has been a tough year for some of the Colorado River basin’s long-planned, most controversial water projects. Proposals to divert water in New Mexico, Nevada and Utah have run up against significant legal, financial and political roadblocks this year.

For many communities in the West, the water that flows out of kitchen faucets and bathroom showerheads starts high up in the mountains, as snowpack tucked under canopies of spruce and pine trees. This summer’s record-breaking wildfires have reduced some of those headwater forests to burnt trees and heaps of ash.

A report out this week shows a significant number of Americans don't have access to basic services like running water. And many of the places that lack…

The Environmental Working Group on Wednesday updated its Tap Water Database , which aggregates data from nearly 50,000 water utilities across the...

For the last two months, the city of Longmont hasn't had enough fluoride to add to its drinking water.The temporary suspension is due to a shortage of…

The Warm Springs Indian Reservation in Oregon has been without safe drinking water since late May, and some people don't have any running water at all.