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Ohio EPA: Reverse osmosis may cause pollution problems

February 07, 2011
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COLUMBUS, OHIO — According to an ongoing study by the Ohio Environmental Protection Agency (EPA), the municipal use of reverse osmosis (RO) to treat drinking water may cause pollution problems in the state’s waterways, The Columbus Dispatch reported.

While RO creates cleaner drinking water, it leaves behind “reject water,” which is filled with minerals and pollutants, according to the story.

This reject water is too volatile to dump into nearby bodies of water, as it will kill or hurt the wildlife, the article stated.

As a result, the city of Delaware, Ohio, would have to spend $2 million dollars to pump the reject water five miles away to a sewer plant, and officials in the town of Marysville said they will have to spend as much as $1 million dollars to inject the waste 3,500 feet underground, the article stated.

“Right now, we are taking another look at the entire process to make sure we are going ahead with the most cost effective process,” said Rick Westerfield, Columbus’ water and power administrator.

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