BANGOR, Maine (NEWS CENTER) - Kids at the Doughty school in Bangor got an up close look at some Atlantic Salmon.
Then the fish were set free into the Penobscot river.
The Bangor Waste Water Treatment Plant raised eight Atlantic Salmon in treated waste water.
On average ten million gallons of water a day gets treated at the facility.
Officials at the plant say that in the 60's water was disposed of into the Penobscot river with out being treated...that all changed when the federal government issued the Clean Water Act in 1972.
The fish were raised and released into the river to show that the water has been cleaned to a point where it can support life.
This is the fourth year the treatment plant has grown and released Atlantic Salmon into the Penobscot river.