EXCLUSIVE: Before Flint's Water Crisis, a Dire Warning - FRONTLINE

EXCLUSIVE: Before Flint's Water Crisis, a Dire Warning  FRONTLINEA foreman at Flint's water treatment plant tried to sound the alarm, a new FRONTLINE documentary exclusively reveals.

EXCLUSIVE: Before Flint's Water Crisis, a Dire Warning - FRONTLINE
EXCLUSIVE: Before Flint's Water Crisis, a Dire Warning  FRONTLINE

A foreman at Flint's water treatment plant tried to sound the alarm, a new FRONTLINE documentary exclusively reveals.