Municipal water in Flint, Michigan, has improved significantly and is suitable for personal cleanliness uses, scientists said Tuesday in a bid to calm fears raised by actor Mark Ruffalo and others who have questioned the safety of the supply that flows into the city’s bathtubs and showers. Marc Edwards, a Virginia Tech engineering professor whose…

Shortly before this poverty-stricken city began drawing its drinking water from a local river in a cost-cutting move nearly two years ago, officials huddled at the municipal water treatment plant, running through a checklist of final preparations. Mike Glasgow, a plant supervisor at the time, says he asked a state water quality official at the…