Complex sentence: The chief of the Washington Aqueduct disagreed, saying that tests taken after the chloramine treatment commenced didn't show any additional corrosiveness; he believed corrosion inhibitors, like organophosphate, could be added to the water to prevent lead leaching.
Split into simpler sentences: The chief of the Washington Aqueduct disagreed, saying that tests taken after the chloramine treatment commenced didn't show any additional corrosiveness. He believed corrosion inhibitors, like organophosphate, could be added to the water to prevent lead leaching.