Dallas/Fort Worth International Airport has become the world’s largest carbon-neutral airport.

The airport has worked toward carbon neutrality for the past 10 years in an effort to reduce its environmental impact, cut costs and improve efficiency. The airport is the first in North America to achieve the milestone.

“Our initial goal was to reduce our CO2 emissions per passenger by 15 percent by 2020. We were able to achieve this goal two years ahead of schedule, and as such we’ve been able to drive more efficient operations, offset the impact of our growth and reduce our emissions per passenger,” Robert Horton, vice president of environmental affairs, DFW, told TravelPulse.

“DFW has a strong commitment to sustainability, and we will continue to look for innovative ways to reduce our emissions while improving the customer experience.”

Officials say they’re also saving money by choosing more environmentally conscious routes, including efficient plumbing fixtures that lowered water use, using a reclaimed water system that provides irrigation and terminal heating. The airport is also working toward a zero waste system that attempts to keep trash out of landfills.

“The new Zero Waste Program will improve overall performance of DFW’s diversion rate by an estimated 45 percent and reduce operational costs,” states the fact sheet.

“We recognize that environmental improvement is an economic, social and business imperative for the airport and for the community we serve,” said Horton. “Sustainability touches everyone, and we look at our sustainability goals not just as expectations we need to meet, but an important responsibility.”