MIAMI (AP) — Gulf Power Company is allowing pollutants from aging coal ash pits to leak into the Apalachicola River, according to a lawsuit filed by three environmental groups.

The nonprofit law firm Earthjustice filed a lawsuit Wednesday in Tallahassee federal court on behalf of the Southern Alliance for Clean Energy, Waterkeeper Alliance and Apalachicola Riverkeeper. They say Gulf Power is illegally discharging arsenic, lead and other pollutants from its coal-fired plant near Sneads into the river.