One year from Rio: Waters where Olympians will swim and sail in next summer's Games are rife with HUMAN SEWAGE amid health warnings for competitors and spectators

One year from Rio: Waters where Olympians will swim and sail in next summer's Games are rife with HUMAN SEWAGE amid health warnings for competitors and spectators A new study has shown that ingesting just three teaspoons of water from Brazil's polluted waters, pictured, could be enough to put an athlete out of action for days and crush Olympic dreams.