. >> reporter: luis alaveda has lived here his whole life and walked up and down treacherous stairs and rivers of garbage flow around every corner. all of that ends up here. you can still smell a very foul odor. >> translator: i found many plastic bottles and rats and cats, dogs, condoms and diapers in the dirty water. >> reporter: his love of surfing puts him in water that could make his sick from noro virus to hepatitis according to a study conducted by the associated press. he now documents everything and uses social media to show the world that rio's beautiful looking beaches have a very ugl secret. >> translator: my hope is that someone or a company see what is happening and help us. because if you depend on the government of rio de janeiro, we will get no solution. >> reporter: it would mean more than catching a break, because if the olympics didn't bring change, many wonder what will. in rio de janeiro, jamie yuccas, cbs news. >>> coming up after your local news on "cbs this morning," we will show you how car thieves are breaking into vehicles in just minutes through a computer h