The Illinois attorney general sued  Enbridge Inc.’s U.S. affiliate Enbridge Energy Partners Thursday, as the state seeks to have the company pay the costs to clean up an oil pipeline spill last month.

Atty. Gen. Lisa Madigan and James Glasgow, the state’s attorney for Will County, filed an eight-count complaint against the company.

The complaint alleges that the Sept. 9 spill of about 6,100 barrels of oil from Enbridge’s 670,000 barrel per day Line 6A in Romeoville caused danger to the public health and welfare, violated water and air pollution laws and created a public nuisance.

The court also agreed to a request for an interim order requiring Enbridge to inspect water mains, sanitary and storm sewers, private wells and groundwater within a half mile of the site to ensure all oil from the spill has been cleaned up.

Enbridge could not be immediately reached for comment.

The suit seeks repayment for the costs incurred by the Illinois Environmental Protection Agency for its oversight of the spill’s cleanup and remediation.