 in reality that's not the case you know when i lived in rio de janeiro they promised that eighty percent of the water that flowed into this one bay called guanabara bay where they were going to be hosting some of the swimming events they said that eighty percent of the water flowing into guanabara bay would be cleaned filtered by the time the olympics rolled around it was more like 25 30 so they broke that promise and hey that would have been a huge boon for people in rio de janeiro to have another fresh place to recreate but that just did not play out