Maryville (WVLT) One of Alcoa's old water treatment units caught fire today in Maryville.
The fire started Friday around 12:45 pm, as demolition crews were tearing it down.
Patricia Tipton, a spokesperson from the City of Alcoa, says a plastic tank burned.
Thick black smoke could be seen pouring from the building from miles away.
The fire was under control in about 40 minutes.
There were no injuries, and no homes were evacuated.
Tipton says the facility is right next to the new water treatment plant.