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Water

Monday, December 20, 2010

Carcinogen in D.C. Water Not on Environmental Protection Agency List

The Environmental Working Group issued a report that reveals the levels of chromium-6 in 35 cities across the United States, including Washington, D.C.

A report from the Environmental Working Group shows that carcinogenic hexavalent chromium (chromium-6) is found in the water supply in 31 out of 35 U.S. cities tested, including Washington, D.C. The report raises concerns about the fact that the Environmental Protection Agency (EPA) does not currently have a legal limit for chromium-6 and does not require tests for the chemical, which is also known as the Erin Brockovich chemical. According to the EWG, chromium-6 comes from steel and pulp mills, metal-plating and leather-tanning facilities, and soil and rock erosion. The city with the highest level was Norman, OK where rates were 12.9 part per billion (ppb). Washington, D.C. registered with 0.19 ppb. (See chart for other cities…

Monday, November 15, 2010

Where Your Water Goes: Part II

Georgetown's historic nature means old sewers, but that will change over the next 15 years with a $2.6 billion project.

The D.C. Blue Plains Advanced Wastewater Treatment Plant is a small wonder and a friend of the environment. At least that's what DC Water General Manager George Hawkins tried to express to a group of reporters recently. But Georgetown's outdated sewer system leaves something to be desired. Changes coming over the next 15 years will allow Blue Plains to process more wastewater and improve the quality of the Potomac River. The Blue Plains facility in SW D.C. serves the District, MD and VA for a total of 726 square miles of coverage and has the capacity to treat 370 million gallons of wastewater a day.  In D.C. alone, DC Water operates 1,800 miles of sanitary and combined sewers. Georgetown's historic buildings and the age of the established…

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