The practice is designed to improve the quality of water coming from the tap by flushing out loose lead particles that may linger in pipes and to help coat the pipes to prevent lead from leaching into the water. Experts last month warned that people leery of using the water weren't running enough of it to rid the system of toxic lead, slowing the efforts to clean out lead deposits and recoat the pipes and plumbing to make them safe again. "Flushing the pipes will help reduce the particulate lead, but the long-term success of this action, along with the establishment of a protective coating on the pipes, is also dependent upon how corroded the pipe surfaces were when the measures were initially applied," said Marty Kaufman, who chairs the University of Michigan-Flint's Earth and Resource Science department. Mata, who worked for years at a now-defunct auto parts assembly plant in Flint, said he hopes the pipe-flushing plan works and is happy to give it a try.