Police are investigating some of Rio de Janeiro’s largest wastewater treatment plants to determine if the facilities are actually treating sewage.In a surprise sting, police took samples and collected documents at six treatment plants. Depending on the findings, charges could be brought against Cedae, Rio’s state water and sewage utility, for allegedly dumping raw or minimally treated wastewater into city waterways.The host city for the upcoming Summer Olympics has come under fire for its water pollution problems as the start of the games nears. Last year, an independent analysis by the Associated Press found high levels of viruses and bacteria
