In January 2015 the Michigan state government started leaving coolers of bottled water beside water fountains in their Flint offices so that state employees would not have to drink the poisoned water.
Plug that into the excellent timeline over at fivethirtyeight and the pattern becomes even more obvious. The state Department of Environmental Quality intentionally thumbed the scale on every single water quality test they took in Flint precisely because they already had a good idea what a legitimate test would find.
I am embarrassed to admit that I once thought of Rick Snyder as one of the good ones, at least relative to what we expect these days from a Republican governor. This was a crime against humanity.