As the Colorado River teeters on the brink of shortage, water leaders in Arizona are begging developers to pressure legislators to sign off on a drought plan, while also aiming to reassure those developers that despite a drier future, it’s safe to come to Arizona and build. “We need all of you to go to your favorite legislator and express your support for the Drought Contingency Plan,” Tom Buschatzke, the director of the Arizona Department of Water Resources, told a group of 250 development industry representatives and others during a breakfast meeting Friday. “I implore you.”