Earlier this fall, San Francisco International Airport banned the sale of plastic water bottles. SFO is instead stocking its shelves with alternatives: bottles made of aluminum, glass or compostable material. One Idaho-based company is making its mark on the industry: Central Idaho spring water can now be found lining shelves across the nation. But instead of plastic, the water is packaged in brushed aluminum bottles with Proud Source Water’s bright blue logo. “Mackay, Idaho is situated deep in a valley surrounded by the Rocky Mountain Range,” a Proud Source promotional video shares. “This land is our home. We want to help preserve our environment.” Proud Source started bottling in 2017 as an alternative to plastic water bottles. Now, it is one of San Francisco International Airport’s chosen plastic bottle alternatives. SFO spokesperson Doug Yakel says plastic water bottle use has been a problem at the airport for years. Now, this ban is part of its goal to send zero waste to the landfill by 2021. The airport set this goal three years ago, but couldn’t ban the bottles until now. “Back then there really weren’t a lot of good alternatives to plastic water bottles, we ...