The Columbus Water Works is trying to figure out why a manhole cover spilled 64,000 gallons of untreated sewage into the Chattahoochee River Thursday, a week after heavy rain caused a spill topping 1 million gallons.
Jim Patterson, vice president of communications, said the spill was reported at 10:53 a.m. while a worker was taking water samples along the river. The spill lasted only 10 minutes but that was long enough to cause a major spill along the Riverwalk.
A power failure at the south Columbus treatment facility caused sewage to backup in the 72-inch line and force water from a manhole cover.
The spill was reported to the Georgia Environmental Protection Division as required by law, Patterson said.