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Posted Wed Aug 28 2013: from Xinhua:
Water supplies in eastern U.S. threatened by river alkalinization: study
Researchers from the University of Maryland and other institutions looked at records of alkalinity trends in 97 rivers from the U.S. state of Florida to the state of New Hampshire over the past 25 to 60 years and found that two-thirds of the region's rivers are becoming "significantly more alkaline." Among the rivers impacted are those that provide water for big cities such as Washington D.C., Philadelphia, Baltimore, and Atlanta, the researchers said. Increased alkalinity complicates drinking water and wastewater treatment, encourages algae growth, and can hasten the corrosion of metal pipe infrastructure. At high alkalinity levels, ammonia toxicity can also harm irrigated crops and fish in rivers, according to the researchers.... "This is because acid rain, acidic mining waste, and agricultural fertilizers speed the breakdown of limestone, other carbonate rocks, and even concrete and cement," the researchers said in a statement. "The result: alkaline particles are washed off of the landscape and into streams and rivers."
[Read more stories about: airborne pollutants, water issues, unintended consequences]
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'Doc Michael says:
Alkaline rivers, acidic seas... see, it's all part of Gaia's plan to balance things out.

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