One water sample form a home in Flint had lead levels of 13,200ppb (part per billion) (See Chemical & Engineering News;February 11, 2016; vol. 97; issues 7; pp 26-29). All samples fromthe same home had more than 300 ppb, even after flushing. Theaverage of several samples that were taken from the home was 2,000ppb. If ppm is equivalent to micrograms/liter, then how many gramsof lead were in each liter of water? Why is it a problem when toomuch lead is in drinking water?
