New York City ? The water supply system in an abandoned skyscraper near ground zero where two firefighters died in a fire over the weekend was “not operational,” city officials said Monday.

The old Deutsche Bank building has been plagued with citations and received a violation for failure to maintain the system after fire investigators found a section of the water network, known as the standpipe, unattached and lying on the floor in the basement.

The building has been a toxic wasteland since it was damaged the morning of the World Trade Center attack six years ago and was being dismantled floor by floor. It once stood 41 stories, but demolition crews had whittled it to 26 by Saturday, when the fire erupted.