Water tests last Friday showed bacteria in the water system at the airport's project management office near Bush Intercontinental Airport.
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RELATED: Construction oversight means no water for $18 million airport building
This week, employees were banned from using tap water and bottled water was brought in.
The $18 million building was the focus of a 13 Investigates report last month when crews were forced to install a temporary water tank outside the brand new building.
A design mishap connected the building to an empty water main. Bacteria was found in that temporary system of plastic tanks and piping.
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New tests were performed, but there is no word on the results.
Passenger terminals are not affected.
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