Although lead consumption can cause health problems for everyone, children are especially vulnerable because the element can hinder growth and development. A water system will soon be needed to measure lead levels in school tap water, but it is not clear how these measurements should be interpreted. ACS. in a new study of environmental science and technology paperUsing real-world data, the researchers set out an approach to identify schools that are likely to have problematic leadership levels.
Under certain circumstances, pipes, faucets and other plumbing system components can release lead into the water they carry with them. Research shows that this type of pollution is widespread throughout schools, and the US Environmental Protection Agency recently developed a plan to revise rules for lead testing in these buildings. The water system test lead material for modification is based on 5 samples from the school. However, because the amount of lead visible in buildings’ water can fluctuate, some researchers are concerned that this approach will not accurately detect potentially problematic levels of the school. Kelsey Pepper and colleagues wanted to investigate the problem and see if only five samples could be used to identify schools at risk.
Researchers analyzed 47,727 lead measurements from 1,094 schools in Massachusetts. They got water from 12% of appliances such as: fountains and taps had water levels above 15 ppb. This is the limit at which the state requires the equipment to be turned off. These problematic fixtures were not evenly distributed. 90% of them were in schools only 34%. The team used these data (about 44 samples on average per building) to classify schools as low-lead or high-lead levels. We then tested the two methods of performing the same classification with only five measurements and verified the results by comparing them with the results obtained from the entire dataset. The first example only counts the number of samples above 5 ppb out of five samples, and the second example uses statistical analysis to score all five together. Combining the two approaches, they found that schools with low or high risk could be identified most accurately. LEAD LEVEL.. This strategy was not able to classify schools based on the low threshold of 1 ppb. Despite its limitations, the researchers confirmed that these results can be used to prioritize lead repair tasks using five samples when analyzed by these two methods. he says.
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for more information:
A modified 5 sampling approach to lead and copper regulations is used to identify schools at increased drinking water exposure. environmental science and technology paper (2021). pubs.acs.org/doi/abs/10.1021/acs.estlett.1c00845
American Chemical Society
Citation: Schools with High Levels in Drinking Water (December 15, 2021) was retrieved from https://phys.org/news/2021-12-schools-high.html on December 15, 2021. I did
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Identify schools with high levels of drinking water
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