"Frequent accidents at 10 of the state's biggest refineries resulted in the release of millions of pounds of toxic chemicals into the air and millions of gallons of polluted water into state water courses between 2005 and 2008, according to a report to be released this morning by the Louisiana Bucket Brigade."

"The U.S. Environmental Protection Agency is on schedule to release federal guidelines for the disposal of coal ash some time this month, but a potential loophole in the new rules has some worried they will leave Iowans unprotected."

Cleanup of polluting runoff from abandoned mines in Colorado and elsewhere is stalled by a legal paradox.

"BP Plc on Tuesday began cleaning up an oil spill from a leaky Alaskan pipeline, but said it has not determined what caused the leak or how much material spilled onto the snow-covered tundra."

"The Environmental Protection Agency issued a final rule Monday aimed at reducing pollution from construction sites, saying that it will significantly improve the quality of water nationwide."

"Concerns about toxics discharged from an unlined coal ash waste dump in suburban Washington, DC have prompted four environmental groups to give formal notice that they intend to sue Mirant MD Ash Management, LLC and Mirant Mid-Atlantic, LLC Corporation of Atlanta, Georgia for Clean Water Act violations in Maryland."

Despite tens of billions spent under the 1972 Clean Water Act to upgrade the sewage-handling systems of U.S. cities, many have reached capacity and are unable to handle wet-weather flows. The result is that many are "violating the law by dumping untreated or partly treated human waste, chemicals and other hazardous materials into rivers and lakes."