commander in puerto rico says they are looking for signs of industrial toxins often linked to serious health problems, including cancer. and epa documents show as late as last year, dangerous levels of those industrial toxins were found in the ground. how concerned are you about what might happen to them? >> we're concerned because it's not absolutely clean, you know, pure water. there are some contaminants. >> reporter: right after the epa team left and locked the site, juan carlos and his brother showed up, peeled back the fence, and filled up dozens of capers with water. are you going to drink this water? >> yeah. >> reporter: you're going to drink it? >> yeah. >> reporter: you're willing to take the chance? so this is it. you'll take the chance. if i don't drink water, mime