San Francisco International Airport (SFO) is banning the sale of single-use plastic water bottles in its on-site eateries and vending machines from tomorrow.
Flyers who want to consume plain water (flavored will be exempt from the ban) will have to bring their own refillable aluminum or glass bottles - or buy them on-site.
The airport has more than 100 hydration stations where travelers can top up their water supply. Airport bosses say more are on the way.
SFO and sustainability
The move is part of a wider ambition for SFO to become more eco-friendly. According to reports, the facility wants to eliminate most the waste it sends to landfill by 2021.
In addition, it wants to cut net carbon emissions and energy use to zero, under an ordinance approved by San Francisco's municipal government in 2014.
Food vendors in the airport have reportedly been told to give customers compostable single-use foodware, including straws, eating utensils, and food containers.
"We're the first airport that we're aware of to implement this change,"SFO spokesman Doug Yakel told the San Francisco Chronicle.
"We're on the leading edge for the industry, and we want to push the boundaries of sustainability initiatives."