I work with two people who still have family in Flint. Anyone who can afford it is cooking with bottled water--and has been for awhile. Most people simply did not believe it when they were told the water was OK to drink. In the past couple of weeks there have been a lot of volunteer efforts to bring large quantities of bottled water in. I wonder less about the restaurant industry than I do about the hospitals. With the exception of a small, newly- gentrifying neighborhood downtown, it is mostly a poor city. Not much in the way of restaurant business there.
The in-home pipes are not the problem. It is the water mains into houses that have been destroyed. The Flint River water was not only pretty polluted to begin with, it was being piped in without having had anti-corrosion chemicals added to it, which is unheard of in a municipal water supply. Those chemicals coat the inside of older pipes so the metals don't leach into the water. That protective coating was corroded away, so even now that they've re-connected to Detroit's water supply, the infrastructure has essentially been destroyed. The Detroit water is cleaner and less corrosive but the damage has been done. There are no usable records as to where the oldest, most vulnerable lead mains are located.
Edited by ChicagoTerry - 1/27/16 at 10:01pm