As Americans drink more bottled water than ever before, environmental advocates are pushing companies to put water in aluminum cans instead Pepsi is betting that it can quench your thirst just as effectively via cans rather than bottles. But will the beverage giant’s gambit pay off for the environment? The company will begin packaging its Aquafina brand of water in aluminum cans for U.S. food service outlets next year. PepsiCo PEP, -0.35%   will also test the aluminum cans with retailers, the company announced last week. Additionally, Pepsi will no longer package its Bubly line of seltzers in plastic bottles; instead, the product will only be sold in cans. And its LIFEWTR line of bottled water will move to 100% recycled plastic packaging. Altogether, the company said these changes should eliminate more than 8,000 metric tons of “virgin” plastic annually and 11,000 metric tons of greenhouse-gas emissions. “Tackling plastic waste is one of my top priorities and I take this challenge personally,” PepsiCo Chairman and CEO Ramon Laguarta said in a statement announcing the new packaging. “As one of the world’s leading food and beverage companies, we recognize the significant role Peps...