Crews are working to re-submerge a sewer pipe that floated to the surface of Waikiki’s Ala Wai Canal.

It’s been about two weeks since the pipe surfaced. A Hawaii News Now broadcast shows dredging crews and a diver in the water Friday morning.

The city says an air bubble lifted one section of a 5,000 foot-long pipe. Pedestrians on the Kalakaua Avenue bridge have a clear view of the pipe sticking out of the water.

The city says the pipe isn’t leaking and isn’t a health risk.

The pipe was used after a 2006 sewer main break. Only a small amount of sewage goes through this bypass pipe.