World's Highest Drug Levels Entering India Stream

World's Highest Drug Levels Entering India Stream

From sci-tech-today.com

When researchers analyzed vials of treated waste water taken from a plant where about 90 Indian drug factories dump their residues, they were shocked. Enough of a single, powerful antibiotic was being spewed into one stream each day to treat every person in a city of 90,000.

Last year, The Associated Press reported that trace concentrations of pharmaceuticals had been found in drinking water provided to at least 46 million Americans. But the waste water downstream from the Indian plants contained 150 times the highest levels detected in the U.S.

As the AP reported last year, researchers are finding that human cells fail to grow normally in the laboratory when exposed to trace concentrations of certain pharmaceuticals. Some waterborne drugs also promote antibiotic-resistant germs, especially when -- as in India -- they are mixed with bacteria in human sewage. Even extremely diluted concentrations of drug residues harm the reproductive systems of fish, frogs and other aquatic species in the wild.

The discovery of this contamination raises two key issues for researchers and policy makers: the amount of pollution and its source. Experts say one of the biggest concerns for humans is whether the discharge from the wastewater treatment facility is spawning drug resistance.

"Not only is there the danger of antibiotic-resistant bacteria evolving; the entire biological food web could be affected," said Stan Cox, senior scientist at the Land Institute, a nonprofit agriculture research center in Salina, Kan. Cox has studied and written about pharmaceutical pollution in Patancheru, Andhra Pradesh, India. "If Cipro is so widespread, it is likely that other drugs are out in the environment and getting into people's bodies."

In India, villagers near this treatment plant have a long history of fighting pollution from various industries and allege their air, water and crops have been poisoned for decades by factories making everything from tires to paints and textiles. Some lakes brim with filmy, acrid water that burns the nostrils when inhaled and causes the eyes to tear.

"I'm frustrated. We have told them so many times about this problem, but nobody does anything," said Syed Bashir Ahmed, 80, casting a makeshift fishing pole while crouched in tall grass along the river bank near the bulk drug factories. "The poor are helpless. What can we do?"