Answer:
One example of threats in water quality in the us is the
lead in water, Flint Michigan
The Flint water crisis is a man-made public health crisis (April 2014–June 2016) involving Flint, Michigan's municipal water supply system. Tens of thousands of Flint locals were exposed to harmful levels of lead, and outbreaks of Legionnaire disease killed at least 12 individuals and sickened dozens more.
