Partial replacement of old lead pipes can make water contamination problems worse, a new study shows.
Joining old lead pipes with new copper lines using brass fittings spurs galvanic corrosion that can dramatically increase the amount of lead released into drinking water supplies, the research shows.
“Work done in our laboratory shows galvanic corrosion in joined service lines is significant and lasts for a long time,” says Dan Giammar, associate professor in the department of energy, environmental and chemical engineering at Washington University in St. Louis.
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