One common abatement: Dig up old lead lines and replace a portion of them with another metal, such as copper. However, this technique can dislodge lead particulates and release them into the water supply. Furthermore, partially replacing the lead pipe connection instead of entirely exchanging it is problematic. A team of engineers at Washington University in St. Louis has developed a new way to model and track where lead particles might be transported during the partial-replacement process, in an effort to keep the water supply safer. “We all know lead is not safe, it needs to go,” said Assistant Vice Chancellor of International Programs Pratim Biswas, the Lucy and Stanley Lopata Professor and the chair of Energy, Environmental and Chemical Engineering at the School of Engineering & Applied Science. “This is the first comprehensive model that…