HEADLINE: SWIMMING WATER
ANCHOR LEAD: HEALTH OFFICIALS NEED TO TEST RECREATIONAL AREAS WHEN SWIMMERS ARE THERE, ELIZABETH TRACEY REPORTS
When health officials test water quality at rivers, lakes and other open water, they most often do so during the week, when relatively few swimmers are present. Thaddeus Gracsyk, a researcher at the Johns Hopkins Bloomberg School of Public Health, says his research shows that’s a mistake.
GRACZYK: Public health implications are that water should be basically tested when people are present in the water. Assessment of the water for the microbiological quality should be done when the people are in the water. :12
The reason is people stir up the water and bugs come to the surface.
GRACZYK: In swimming pools, yes, people contribute significantly to water contamination, however in the open beach water I think the main mechanism is just the resuspension of the particles from the bottom sediments. :13
Graczyk says testing for water contamination should be done when swimmers are in the water for a more accurate assessment. I’m Elizabeth Tracey reporting.