Faster Test for Beach Closings

An Indiana University scientist has developed a computer model that can predict E. coli levels near public beaches. The system could help public health officials who’ve been relying on test results that come too late to be of much help. The Great Lakes Radio Consortium’s Tracy Samilton reports:

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An Indiana University scientist has developed a computer model that can predict E. coli levels near public beaches. The system could help public health officials who’ve been relying on test results that come too late to be of much help. The Great Lakes Radio Consortium’s Tracy Samilton reports:


E. coli is a bacteria that can reach dangerous levels in the water, usually when big rainstorms flush untreated water into nearby lakes and streams. But traditional tests for E. coli take 24 to 48 hours. Indiana University hydrologist Greg Oliphant says the delay is a serious problem for keeping people safe when they go to the beach.


“Regulators were saying go ahead and go in the water, and E. coli was above safe level, and stay out when water turned out to be perfectly safe for full body contact.”


Olyphant has developed a computer model that uses wind, rain, and temperature readings to predict when E. coli levels will be high. The system has been tested in Chicago and Milwaukee and they found it to be about 80% effective. For the Great Lakes Radio Consortium, I’m Tracy Samilton.