Recent reports indicate that the water crisis in Flint, MI, had unpredicted health consequences including increasing the rate of fetal deaths and miscarriages. The effect size is described by the authors of a new working paper as “horrifyingly large.” You can find out more at The Washington Post and The Denver Post. The Michigan NPR station, Interlochen Public Radio, has a more cautious interpretation of early reports that attribute increases over background incidence to the water quality in Flint. But nobody thinks the news is good.
You can read the original of the Grossman and Slusky study, here, if you would like to assess methodology, sample size, effect amplitude, etc.