About 2,300 gallons of chemicals were accidentally released Wednesday into the Little Arkansas River northwest of Wichita from a city treatment plant, the managers of the project said.
Denice Bruce, a spokeswoman for Professional Engineering Consultants, said the accident occurred at about 9 a.m. when a broken line leaked the chemicals into a holding basin at the city's aquifer storage and recovery water treatment plant between Sedgwick and Bentley.
The chemicals were accidentally discharged into the river. Bruce said it was not clear how that happened.
The chemicals consisted of 300 gallons of sodium bisulfite, which is used to neutralize chlorine, and about 2,000 gallons of sodium hypochlorite solution, or bleach. The chemicals were being used to clean filters at the plant.
Bruce said the quantity of chemicals released posed no threat to human health.
The Kansas Department of Health and Environment, which is in charge of monitoring chemical spills, was notified.
Bruce said the contractor responsible for the spill, General Electric, would be responsible for any remediation that KDHE deems necessary.
Joe Pajor, the city's co-interim director of public works and utilities, said the city takes environmental concerns seriously.
"The city will work with the contractor to guard against this type of incident occurring again," he said.