Water Quality

At beaches around the US, the public is notified about bacterial pollution today because of the results of water samples collected yesterday. By the time the results of yesterday’s tests are complete, the water quality has changed. Chicago is unique, and the Chicago Park District has partnered with researchers at the UIC School of Public Health, who perform DNA-based tests for bacteria.  Those results are ready within three to four hours, instead of the 18-24 hours required for standard culture tests.