Scientists Drug-Test Whole Cities

Researchers have figured out how to give an entire community a drug test using just a teaspoon of wastewater from a city's sewer plant. The test wouldn't be used to finger any single person as a drug user. But it would help federal law enforcement and other agencies track the spread of dangerous drugs, like methamphetamines, across the country. Oregon State University scientists tested 10 unnamed American cities for remnants of drugs, both legal and illegal, from wastewater streams. They were able to show that they could get a good snapshot of what people are taking. "It's a community urinalysis."