The 2016 Olympic Games at Rio de Janeiro are only one year away and organizers are still facing serious issues. Among the biggest concerns are polluted water, security concerns, threat of protests and unfinished infrastructure.

“The issue that has most attracted the world’s attention is the cleanup work at Guanabara Bay, which will host Olympic sailing, and the Rodrigo de Freitas lake, home to rowing and canoeing,” The Hindu reported. “Media reports have claimed that both venues remain littered with rubbish and sewage, prompting concerns from health experts about possible risks to athletes.”

An investigation from the Associated Press conducted an analysis of water quality that revealed dangerously high levels of viruses and bacteria from human sewage in Olympic and Paralympic venues.

“Extreme water pollution is common in Brazil, where the majority of sewage is not treated. As a result, Olympic athletes are almost certain to come into contact with disease-causing viruses that in some tests measured up to 1.7 million times the level of what would be considered hazardous on a Southern California beach,” the AP investigation reported.

Rio 2016 deputy CEO Leonardo Gryner told Xinhua that work is being carried out to ensure both venues are suitable for competition. “Preparations are exactly where we would expect them to be."

Thomas Bach, President of the International Olympic Committee, said he is sure that one year from now “everyone will be enchanted by the passion of the Brazilian people, as well as the efficiency of Brazil.”

"If you look at the many legacy projects here in Rio de Janeiro, I think that the Cariocas (Rio citizens), Rio de Janeiro and Brazil can be very proud of this. This is a real boost for Rio de Janeiro,” Back added.

More than 10,000 of the best athletes in the world representing 206 countries will be part of next year’s Olympic Games.