CHARLESTON, WV (CNN) – The West Virginia company whose chemical spill contaminated water supplies has filed for bankruptcy.
Officials say one of Freedom Industries' chemical tanks leaked more than 7,000 gallons of a coal treatment chemical into the Elk River on Jan. 9.
The chemical leak caused a state of emergency in nine counties and temporary prevented roughly 300,000 people from using their tap water.
As of Friday, pregnant women were still being advised to avoid drinking the water.
Freedom Industries' chapter 11 filing doesn't provide extensive details about the chemical leak. The exact cause is still under investigation.
Copyright 2014 CNN. All rights reserved.