More than Half of Rivers in the US are in Poor Condition: EPA Survey

Rivers and streams in the U.S. are in bad shape and almost 55 percent of them are unfit for survival of aquatic life, according to a new report from the U.S. Environmental Protection Agency.

EPA's survey was based on samples collected from 2000 sites across the U.S. The agency along with state and University scientists tested the water for the presence of various chemicals.

The survey found that 27 percent of all rivers in the nation have high amounts of nitrogen levels and about 40 percent have high phosphorous levels. The increase in the levels of these elements leads to algal bloom that in turn depletes the oxygen levels in the water, making it impossible for aquatic life to survive.

Most rivers have high levels of bacteria and mercury, which makes the water unsafe for human consumption. Loss of vegetation cover and human disturbances have also led to greater erosion of soil around the water bodies, the report found.

"The health of our Nation's rivers, lakes, bays and coastal waters depends on the vast network of streams where they begin, and this new science shows that America's streams and rivers are under significant pressure. We must continue to invest in protecting and restoring our nation's streams and rivers as they are vital sources of our drinking water, provide many recreational opportunities, and play a critical role in the economy," said Nancy Stoner, Acting Assistant Administrator, Office of Water, in a press release.