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Water, water, everywhere… but is it safe to drink?
Date:2/20/2011

t stable isotopes: Carbon-12 and Carbon-13. One is slightly heavier than the other, and the microbes tend to feed mostly on the lighter one. When the microbes have been working for some time, the ratio of heavy-to-light carbon will change. It is this changereferred to as an isotopic signaturethat lets us know the water is being cleaned up," says Sherwood Lollar.

By cleaning up contaminated groundwater, it is possible to recuperate what would otherwise be a lost resource. The technique is starting to be used by regulators, and Sherwood Lollar is working with an international group of scientists to put together a guidance document for the United States Environmental Protection Agency (EPA).

This will provide a set of recommendations about use in the field for practitioners, which will be a first step towards mainstreaming the technique.

"It's a common misconception that waterand especially our supply of groundwateris a renewable resource," says Sherwood Lollar. "But it isn't. So, it is particularly important that we manage it well and that we do whatever we can to conserve, protect and remediate what we have."

Sherwood Lollar will present her research and answer questions from the press, as part of the THINK CANADA Press Breakfast on the theme of water. The breakfast will be held in Room 202A of the Washington Convention Center at 8 a.m. on February 20, 2011 and will feature Canadian research experts across natural sciences and engineering, health, social sciences and humanities.


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Contact: Michael Adams
michael.adams@sshrc-crsh.gc.ca
613-219-7523
Natural Sciences and Engineering Research Council
Source:Eurekalert

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