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![](https://www.circleofblue.org/wp-content/uploads/2010/12/toxin-70.jpg)
Study: Unregulated Toxin Present in Tap Water of 31 U.S. Cities
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California is the first state to consider a limit on the “Erin Brockovich” chemical, which has been found in 31 of 35 U.S. cities recently surveyed.
![](https://www.circleofblue.org/wp-content/uploads/2010/12/nina-70.jpg)
Deadly La Niña Goes Global—Part I: For Western Hemisphere, Record Rains in Latin America
Hundreds have died in Colombian floods, as cooler sea temperatures affect regions around the Pacific; climate change seen as a possible cause.
![](https://www.circleofblue.org/wp-content/uploads/2010/12/proto-70.jpg)
Small Solution to Large-scale Water Pollution — Protozoa Detect Contaminants
A technology start-up is looking small to solve a big global problem.
![](https://www.circleofblue.org/wp-content/uploads/2010/12/biofuels-101-infographic-1-495x300.jpg)
Infographic: Biofuels 101 — Water Use from Plant to Power Source
Production of ethanol, the most commonly used biofuel, has prompted concerns about water use and food supply.
![](https://www.circleofblue.org/wp-content/uploads/2010/12/nasa-70.jpg)
Study: NASA Shows World’s Water is Warming, Buoy Data Confirms in Great Lakes
In some northern regions, lake temperatures are increasing more than air temperatures.
![](https://www.circleofblue.org/wp-content/uploads/2010/11/Jon-Waterman-1000.jpg)
Q&A: Jonathan Waterman on Running Dry
Jonathan Waterman has lived for five months on the waters of the Colorado River--he's paddled its length and then walked when the river ran out.
![](https://www.circleofblue.org/wp-content/uploads/2010/11/china-bridge-70.jpg)
More People, More Problems — Water Challenges with Chinese Urbanization
Recent reports reveal the nation's freshwater challenges and their possible solutions.
![](https://www.circleofblue.org/wp-content/uploads/2010/11/carbon-report-70.jpg)
Top Global Businesses Report Water Risks, Assess Water Use
The Carbon Disclosure Project’s water risk survey is one of many reports and tools addressing corporate water management.
![](https://www.circleofblue.org/wp-content/uploads/2010/11/overpumping-1000.jpg)
Study: Overpumping Draws Down the World’s Groundwater Reserves
Groundwater depletion doubled between 1960 and 2000.
![](https://www.circleofblue.org/wp-content/uploads/2012/01/Asian-Carp-DNA-Map-590-495x400.jpg)
Great Lakes Threats Go Beyond Asian Carp, Invasive Expert Says
Dr. Reuben Keller calls for long-term solutions to protect the Great Lakes, and the Mississippi and Illinois rivers.
![](https://www.circleofblue.org/wp-content/uploads/2010/11/Lease-Meeting-495x400.jpg)
“Typical” Michigan Oil and Gas Lease Auction Casts Doubt on Collingwood Shale Formation
Earlier auction that set state records prompted projections of a new natural gas boom.
![](https://www.circleofblue.org/wp-content/uploads/2010/10/ceres-290.jpg)
Report Highlights Lack of Water Risk Disclosure in Municipal Bonds
The study identifies the need for major overhaul of how water risk is measured and reported in the U.S.