Iowa nitrogen pollution in the water is getting worse, despite investments
July 6, 2018 by Des Moines Register
Nitrogen pollution flowing out of Iowa to the Gulf of Mexico has grown by close to 50 percent over nearly two decades, a new report shows, despite hundreds of millions of dollars spent to stem nutrients entering the state’s waterways.
A University of Iowa study shows the state’s contribution to the Gulf dead zone spiked 47 percent to 618 million pounds in 2016, based on five-year running annual averages. | READ MORE