The Iowa DNR says part of Saylorville Lake is off limits after a waste water spill late Wednesday night.
The break occurred on NW 110th St. It was reported at about 7 p.m. when someone noticed liquid bubbling up through the 110th St. roadbed.
The DNR says a pressurized sewer main broke and pushed up through the ground, ran into the backwaters at Saylorville, and eventually flowed into the lake.
City officials shut off the main at around 9 p.m. and are now working to repair the breech. They believe the discharge ran about three hours.
“It’s possible some of the wastewater made its way into the marina, but there is a barrier dam under Highway 415 where it crosses the backwaters greatly limiting flow into the lake,” said Bill Gibbons of the DNR’s Des Moines field office.
The DNR added that the waste water would have been very dilute since it entered the backwaters and might not pose a threat.
None the less, they are cautioning people to stay out of the backwaters for 24 to 48 hours as they continue to monitor the situation.