The State Department of Health said today that the city of Honolulu can remove warning signs it posted at Keehi Lagoon nearly two months ago.

According to the city, the signs were posted on March 25 after a state security guard noticed toilet paper and smelled sewage in the vicinity of the Nimitz Highway viaduct near Kakoi Street.

What’s more concerning is that the city’s Department of Environmental Services can’t seem to find what the sewage source.

Here’s what the agency had to say:

ENV conducted water sampling Feb. 15 through April 9, 2013 but could not verify the source.  A bypass was setup around the area in question.  The pipe was flushed, cleaned and examined by a closed-circuit TV, but no crack was discovered.  As a precaution, ENV ordered materials to line the inside of the pipe. 

Those materials are expected to arrive the second week of June.  Once on island, it will take up to two weeks to complete the lining project.

ENV and DOH will conduct water sampling on a weekly basis at the canoe launch site beginning May 22, 2013 until the pipe is lined.

—Nick Grube