A Closer Look at What Caused the Flint Water Crisis
Flint, Michigan, continues to grapple with the public health crisis that unfolded as lead levels in its tap water spiked to alarming levels.
Now the scientists who helped uncover the crisis have tested galvanized iron pipes extracted from the “ground zero” house. They confirm in the ACS journal Environmental Science & Technology that the lead that had accumulated on the interior surface of the pipes was the most likely source of the lead contamination.
Flint’s tap water became contaminated with high lead levels after the city turned to the Flint River to supply its water in April 2014. When they switched, officials didn’t use a corrosion-control treatment to maintain the stability of rust layers (containing lead) inside service lines. Within a month of the switch, residents started to report smell and color changes to their water. After her family started getting sick,
Credit: Andrew Jameson/Wikimedia Commons
Kelsey Pieper and other colleagues on Edwards’ Flint water study team have now analyzed the galvanized iron pipes that originally ran from the lead service lines to the Walters’ ground zero house in which the first child with elevated blood lead levels from water was identified. In the tap water, the high lead concentrations strongly correlated with the levels of cadmium, zinc and tin, which were also components of the pipe’s original internal coating.
The authors acknowledge funding from the National Science Foundation and the Community Foundation of Greater Flint.
The American Chemical Society
Source: http://www.ineffableisland.com/2017/02/a-closer-look-at-what-caused-flint.html
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