Tuesday in Rock Rapids, Iowa the city operator noticed that there was no inflow to the wastewater treatment plant around 4 p.m., indicating either a broken pipe or another problem.
By 7:30 that evening the city had rerouted wastewater to a holding basin that us used during high rainfalls.
Wednesday, the city as well as the DNR traced the leak to a break in an 8-inch force main underneath the Rock River.
The city estimates 56,000 gallons of wastewater was discharged into the river and is rapidly moving downstream
The DNR will continue to monitor cleanup and repairs. There was no evidence of a fish kill, however downstream live stock producers who have cattle along the river may want to provide an alternate water source for 24 hours.
There is no estimate on how long it will take to replace the original force main from the 1950’s