UNC has been greener in the past few years.
The University reduced its potable water use by 60 percent per square foot since 2000, despite seeing an increase of more than 2,000 residential students.
Cindy Shea, director of the UNC Sustainability Office, said some new buildings on campus collect rainwater for toilet-flushing systems to cut drinking water use.
Currently, the North Carolina Botanical Garden Visitor Center, Kenan Memorial Stadium and Genome Science Building are using these systems to recycle rainwater.
But when rainwater is insufficient, the University uses reclaimed water as a backup.
UNC already uses reclaimed water from the local water and sewer authorities for cooling at the five central chilled plants on campus.
Shea said the University is hoping to use similar systems on new buildings in the future. And she said the University’s efforts to cut water usage on campus have been very successful.