A water crisis is threatening Corpus Christi, Texas, a major energy port

The Texas city of Corpus Christi is facing a severe water crisis because of a prolonged drought, and it is a threat not just to residential use but also to the refineries and petrochemical plants in a major energy port.

Over the last decade, the city has hoped for new water sources that haven't arrived as expected at the same time it was increasing water sales to industry.

Officials are now scrambling to bring new groundwater sources online to avert a water emergency.

Residents face restrictions and rising bills, while industries are urged to conserve.

Some are worried that reduced water for industry could force some operations to shut down.