Hundreds of people will jump into the Chicago River this weekend for the Chicago River Swim raising money for ALS research and swim lessons. But how do you know it’s safe to get in the water?
To ensure the river is safe, organizers are doing real time monitoring but also working with a team of researchers for testing.
Masters of Public Health candidate Will Kane walked CBS News Chicago through the steps they take at a lab at the University of Illinois Chicago, filtering concentrate bacteria, isolating the DNA, then amplifying it to measure how much is in the water…