NEWS FROM THE STROUD WATER RESEARCH CENTER

Summer 1999

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Research Update
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Fingerprinting rivers

We analyzed water samples from 20 rivers and reservoirs from around the world, which were sent to us by water utilities. While some of these sources are pristine, others are impacted by waste-water treatment plants, agriculture, feedlots and urban runoff. By studying the "fingerprints" left by organic molecules, including perfumes and soaps from treatment plants and petroleum and combustion by-products from urban runoff, we hope to develop a clearer understanding of how organic matter in general -- and pathogens in particular -- enters our drinking-water supplies.

Sponsor: American Water Works Association Research Foundation

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